[amsat-bb] Re: Cross Boom
It all depends on how the elements are mounted. If at 45 to 90 degrees from the crossarm, no propblem and use anything, But if in the same plane then need insulated crossboom, But then if you go insulated then do not run the feedline along it either or you just defeated the purpose of the insulated boom. Billy Simpkins wrote: >Is a fiber glass or some other non-conductive material necessary for a cross >boom? What or the advantages and disadvantages versus a metal one? > >Thanks, >Billy KF0CK >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Cross Boom
Because you now have a metal object (the coax) running along the fiberglass boom, and this WILL effect the radiation pattern of the antenna. and possible the match also. Jeff Yanko wrote: > Hi all, > I found this line confusing > > "But then if you go insulated then do not run the feedline along it > either or you just defeated the purpose of the insulated boom." > > My question is if you run the coax along an insulated crossboom, ie. > fiberglass, how could that affect the coupling of the transmission > line when the object it is being attached to is "insulated"? > > > 73, > > Jeff WB3JFS > > > > > > - Original Message - From: "Joe" > To: "Billy Simpkins" > Cc: > Sent: Wednesday, April 22, 2009 7:06 AM > Subject: [amsat-bb] Re: Cross Boom > > >> It all depends on how the elements are mounted. >> >> If at 45 to 90 degrees from the crossarm, no propblem and use anything, >> >> But if in the same plane then need insulated crossboom, >> >> But then if you go insulated then do not run the feedline along it >> either or you just defeated the purpose of the insulated boom. >> >> Billy Simpkins wrote: >> >>> Is a fiber glass or some other non-conductive material necessary for >>> a cross boom? What or the advantages and disadvantages versus a >>> metal one? >>> >>> Thanks, >>> Billy KF0CK >>> ___ >>> Sent via amsat...@amsat.org. Opinions expressed are those of the >>> author. >>> Not an AMSAT-NA member? Join now to support the amateur satellite >>> program! >>> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb >>> >>> >>> >>> >> ___ >> Sent via amsat...@amsat.org. Opinions expressed are those of the author. >> Not an AMSAT-NA member? Join now to support the amateur satellite >> program! >> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb >> > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Cross Boom
No, That will not make any difference. we are ONLY thinking of the metal in the near field of the antenna,, and how it effects the radiation pattern as well as impedance of the antenna. Now add in feedline radiation and you just oopened up a whole new can of worms. Jeff Yanko wrote: > OK, I see where this is coming into play. So it's possible that the > coax shield could react to the feedpoint system and pattern. Now this > raises a question. If this is the case, has anybody tried a broadband > choke balun to limit this potential problem? If you think about it, > the bigger issue with coax effecting the radiation pattern is improper > decoupling of the fed point. If the outside shield is hot with RF it > will radiated and effect the pattern big time. If the coax is properly > decoupled at the fed point the outside shield will ideally have zero > rf current on it and ideally have no impact on the pattern. > > Thoughts? > > > 73, > > Jeff WB3JFS > > > - Original Message - From: "Jim Jerzycke" > To: "Joe" ; "Billy Simpkins" ; > "Jeff Yanko" > Cc: > Sent: Wednesday, April 22, 2009 11:09 AM > Subject: Re: [amsat-bb] Re: Cross Boom > > >> >> Because the shield of the coax "looks" like a piece of pipe, and has >> the same effect on the antenna pattern that you're trying to >> eliminate by going to a non-metallic cross-boom. >> Jim KQ6EA >> >> >> --- On Wed, 4/22/09, Jeff Yanko wrote: >> >>> From: Jeff Yanko >>> Subject: [amsat-bb] Re: Cross Boom >>> To: "Joe" , "Billy Simpkins" >>> Cc: amsat-bb@amsat.org >>> Date: Wednesday, April 22, 2009, 10:55 AM >>> Hi all, >>> I found this line confusing >>> >>> "But then if you go insulated then do not run the >>> feedline along it either >>> or you just defeated the purpose of the insulated >>> boom." >>> >>> My question is if you run the coax along an insulated >>> crossboom, ie. >>> fiberglass, how could that affect the coupling of the >>> transmission line when >>> the object it is being attached to is >>> "insulated"? >>> >>> >>> 73, >>> >>> Jeff WB3JFS >>> >>> >>> >>> >>> >>> - Original Message - From: "Joe" >>> To: "Billy Simpkins" >>> >>> Cc: >>> Sent: Wednesday, April 22, 2009 7:06 AM >>> Subject: [amsat-bb] Re: Cross Boom >>> >>> >>> > It all depends on how the elements are mounted. >>> > >>> > If at 45 to 90 degrees from the crossarm, no propblem >>> and use anything, >>> > >>> > But if in the same plane then need insulated >>> crossboom, >>> > >>> > But then if you go insulated then do not run the >>> feedline along it >>> > either or you just defeated the purpose of the >>> insulated boom. >>> > >>> > Billy Simpkins wrote: >>> > >>> >>Is a fiber glass or some other non-conductive >>> material necessary for a >>> >>cross boom? What or the advantages and >>> disadvantages versus a metal one? >>> >> >>> >>Thanks, >>> >>Billy KF0CK >>> >>___ >>> >>Sent via amsat...@amsat.org. Opinions expressed are >>> those of the author. >>> >>Not an AMSAT-NA member? Join now to support the >>> amateur satellite program! >>> >>Subscription settings: >>> http://amsat.org/mailman/listinfo/amsat-bb >>> >> >>> >> >>> >> >>> >> >>> > ___ >>> > Sent via amsat...@amsat.org. Opinions expressed are >>> those of the author. >>> > Not an AMSAT-NA member? Join now to support the >>> amateur satellite program! >>> > Subscription settings: >>> http://amsat.org/mailman/listinfo/amsat-bb >>> > >>> >>> >>> ___ >>> Sent via amsat...@amsat.org. Opinions expressed are those >>> of the author. >>> Not an AMSAT-NA member? Join now to support the amateur >>> satellite program! >>> Subscription settings: >>> http://amsat.org/mailman/listinfo/amsat-bb >> >> > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Cross Boom
Just follow the suggestions on the web page that was suggested and you'll be fine. But I am curious as to where did you find the 1.25" fiberglass riod? Joe MM wrote: > >Thanks for all of the good information. > >I am going to rebuild my Sat array this spring (its time for a routine >overhaul). >I have a M2 436CP42UG and the M2 CP22 at opposite ends of a 12’ (1.25”) solid >fiberglass pole. I am converting over to a 1.5” sold 14-foot fiberglass pole >to give me better clearance for other antennas on the tower. >Kenpro 5500 AZ/EL > >I never liked hanging the coax off the back since is throws off the balance. >When you slide the U-clamps Backward on the M2 boom to compensate for the coax >weight on the back, you end up with the clamps on Thinner section of the Boom. > >Based on the theories, if I follow the coax routing and avoid the half or full >wave points I may be able to run the coax down the boom? > >Would this work on the 70 cm too? > >Thanks Miles > > >--- On Thu, 4/23/09, Jim Jerzycke wrote: > > > >>From: Jim Jerzycke >>Subject: [amsat-bb] Re: Cross Boom >>To: "Jeff Yanko" , "Joe" , "Billy Simpkins" >>, "Edward Cole" >>Cc: amsat-bb@amsat.org >>Date: Thursday, April 23, 2009, 1:41 AM >>It's here on Howard's site: >>http://www.g6lvb.com/fibermetalboom.htm >> >> >>--- On Wed, 4/22/09, Edward Cole >> wrote: >> >> >> >>>From: Edward Cole >>>Subject: Re: [amsat-bb] Re: Cross Boom >>>To: "Jeff Yanko" , >>> >>> >>kq...@pacbell.net, "Joe" , >>"Billy Simpkins" >> >> >>>Cc: amsat-bb@amsat.org >>>Date: Wednesday, April 22, 2009, 10:39 PM >>>The coax shield coming off the antenna boom at a right >>> >>> >>angle >> >> >>>looks >>>like another parasitic element being added to the >>> >>> >>antenna >> >> >>>causing >>>severe distortion of the antenna pattern. But if one >>>installs the >>>antenna in the X configuration and attach the cross >>> >>> >>boom in >> >> >>>a >>>location away from any of the elements one can tightly >>> >>> >>run >> >> >>>the coax >>>across the metallic cross boom with little effect. >>> >>> >>This >> >> >>>was tested >>>by WA5VJB and is a published article. >>> >>>I have my M2 436CP42UG mounted in this fashion and it >>>preforms well. >>> >>>73, Ed - KL7UW >>>maybe someone else can point to the link to that >>> >>> >>article. >> >> >>>At 11:41 AM 4/22/2009, Jeff Yanko wrote: >>> >>> >>>>OK, I see where this is coming into play. So >>>> >>>> >>it's >> >> >>>possible that the coax >>> >>> >>>>shield could react to the feedpoint system and >>>> >>>> >>pattern. >> >> >>> Now this raises a >>> >>> >>>>question. If this is the case, has anybody tried >>>> >>>> >>a >> >> >>>broadband choke balun to >>> >>> >>>>limit this potential problem? If you think about >>>> >>>> >>it, >> >> >>>the bigger issue with >>> >>> >>>>coax effecting the radiation pattern is improper >>>> >>>> >>>decoupling of the fed >>> >>> >>>>point. If the outside shield is hot with RF it >>>> >>>> >>will >> >> >>>radiated and effect the >>> >>> >>>>pattern big time. If the coax is properly >>>> >>>> >>decoupled at >> >> >>>the fed point the >>> >>> >>>>outside shield will ideally have zero rf current >>>> >>>> >>on it >> >> >>>and ideally have no >>> >>> >>>>impact on the pattern. >>>> >>>>Thoughts? >>>> >>>> >>>>73, >>>> >
[amsat-bb] Re: Off Topic: Live Earth veiws on DISH
Yeah i've been watching it too off and on. Too bad they diddn't have it running near the equinox. last night I watched the sun pass vbehind the earth, it passes above the north pole now. The camera seems l;ike it will be sensitive enough once the sun is blocked to actually see light pollution, because when it was way off to one side,, say the earth ws 20% lit or so i was actually seeing some stars in the background even. Pretty cool Joe WB9SBD Armando Mercado wrote: >Sorry for the off topic post. > >DISH Network has live 24 hour veiws >of Earth from a camera on EchoStar 11. > >Channel 212. It's been on since Wednesday >but I just discovered it. Way too cool! > >73, Armando N8IGJ > >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Web space
and i don't know for sure if it still does it, but Internet explorer could in the past work just like a FTP program also. Joe Rich Dailey (gmail) wrote: >>As others have noted, every major operating system out there has an FTP >>client, but apparently that's not all that's required. What sort of error or >>denial message are you getting? That will guide the next step. >> >> > >And don't forget about the command line client that's available in any WinXP >dos box. >Tedious, but it works in a pinch. > >Rich, N8UX > >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Kenpro KR-500 motor
Does anyone have a motor or know where to get the motor in the KR-500. Does Yaesu still have them? I picked one up that has some water in it and the motor is bad. tnx, Joe KI4TZ ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: true duplex radios
How about post your list here so we can see if we know of anything that's missing? Joe WB9SBD D. Craig Fox wrote: >Greetings. Ok so this issue gets revisited every few months or so-- as it >seems. I have a nice list of many fully duplex VHF/UHFradios-- I forget who >put together-- that list is taped to the wall next to my station. This comes >in handy for shopping on eham, ebay, etc. However, I am wondering if it needs >some updating. No clue here. Maybe it is current. Ok well almost. I know >it does not list the new Alinco DJ-G7. >Ok so the main reason for the post is first to ask (for the hums): does the >Kenwood TH-F6A operate in fully duplex mode? the reviews on eham were not >exactly clear on this point. If so, then any peculair problems SO > >The second reason for this post is to ask if anyone perhaps has a more up to >date/complete list of truly duplex radios (ie, can do sat work!) ;-) > >Thanks and 73s > >Craig >NOTICE: This communication may contain privileged or other confidential >information. If you are not the intended recipient of this communication, or >an employee or agent responsible for delivering this communication to the >intended recipient, please advise the sender by reply email and immediately >delete the message and any attachments without copying or disclosing the >contents. Thank you. > >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.339 / Virus Database: 270.12.46/2145 - Release Date: 05/31/09 >05:53:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: The Moon is our Future
MM wrote: >Theoretically we may have a free ride to the Moon for an Amateur radio >repeater! > > [snip] > > >One theory: >We need a simple Mode-J transponder (2-meters up, 440 down). >Low power consumption. >Assume minimal antenna gain from the Lander (3 dBd on each antenna) >Assume transmitter power 5-10 watts. > > > Why go with the minimal antenna gain? From the moon the whole Earth only displays less than 2 degrees in the sky. ( Moon shows 0.5 degrees from earth) Why spill all the power where people are not? In addition, once the antennas are positioned, that's more or less it. There is a slight wobble (Libration) of 6.5 degrees So any antenna with a 3 db point that exceeds 6.5 degrees is just wasting transmitter power. And with this link budget even an active bird that has landed and not flying it still will need some pretty hefty power to not need a major antenna setup on the earth side of the system. Just remember what an Oscar 10 station took to have reliable communications,, At Apogee it was only 35,000 miles away, the Moon is almost a ten fold increase in distance, to keep the lander from having to run hundreds of watts to be heard on the earth, ever DB of antenna gain will be needed for sure! Joe WB9SBD ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: The Moon is our Future
exactly, thats why every DB we could get in antenna should be taken, Joe WB9SBD Robert Bruninga wrote: >>Just remember what an Oscar 10 station took >>to have reliable communications, At Apogee >>it was only 35,000 miles away, the Moon is ...] >>[250,000 miles] >> >> > >Which is 7 times farther, squared or 50 times more power. > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.375 / Virus Database: 270.13.2/2214 - Release Date: 07/02/09 >05:54:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: [Fwd: Re: Re: The Moon is our Future]
What someone really needs to do is to run a real actual link budget, and see what things really like are. Joe n...@lavabit.com wrote: >Somehow I sent this in reply to Bob instead of the group. Sorry, Bob. > > > >>BUT one easy way to get gain is to use just a long coaxial gain >>cable. I think it takes about 22 feet of coaxial dipole >>elements at 2 meters to give about 6 dB of gain. So laying down 6 dB >> >> >gain segments on the rock of the moon is as easy as > > >>unrolling a spool of cable. Unrolling 8 of these with the right spacing >> >> >could yield about 17 dB. > > >>Of course this woiuld only point straight up, so it would need >>to be on a moon base in the middle of the earth facing side. >>But since there is a lot of interest in moon bases near the >>poles where there might be water, then a similar array of layed >>down coaxial cable arrays could be phased horizontally to point >>at earth. Actually, just about any direction can be obtained >>with the right spacing. >> >>ONLY problem of course is there has to be someone with legs to >>roll out the cables. >> >> > >How about, if the location is very near the pole, an array that extends up >like a push-pole vertically from the craft, with tape measure type dipoles >that spring out horizontally when the pole goes up? You might need a >small rotator on the base of the pole then to make sure the dipoles point >at Earth depending on the orientation of the craft when it lands, but that >would only need to be turned once I believe, when it is deployed. > >Jerry >N0JY > > > > >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.375 / Virus Database: 270.13.2/2214 - Release Date: 07/02/09 >05:54:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: The Moon is our Future
he he he, He just missed his ride with the comet Hale Bop, and the heavens gate folk Joe WB9SBD David - KG4ZLB wrote: >OK, I just love conspiracy theories :-D > >Are you really Michael Moore ? > >:-D > > > > >kd8...@aol.com wrote: > > >>I don't think man will ever walk on the moon. And I really didn't want to >>start a whole thing on this - >>Someone said that a man would have to roll out an antenna for a amatuer >>project - I just don't think that will ever happen >>A small robotic rover could do it but then you are talking expensive unless >>nasa was willing to give "us" time on a rover that was going to do >>experiments for nasa >> >>LeRoy, KD8BXP >>http://www.HamOhio.com >> >> >> > >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.375 / Virus Database: 270.13.2/2214 - Release Date: 07/02/09 >05:54:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: The Moon is our Future
Maybe some converted Wild Blue dishes? They have a 1 watt tranny that operates at 29.5 to 30 GHz, may be able to drag down to 24 Ghz? I wonder what the ERP of a 1 watt sig at 30 GHz is with say a old TVRO dish? Not the tiny mini dishes but a used say 10 footer hm,,, Joe WB9SBD James French wrote: >On Thu, 2009-07-02 at 10:52 -0500, tosca...@umn.edu wrote: > > >>As far as the dreaming goes, wouldn't an L/S transponder be better than a >>V/U or U/V transponder? Granted, the path loss is greater, but the antenna >>gain is easier to produce... >> >> > >Miles, > >Why not use a L/s, U/L. or a U/s transponder for this? >Why limit ourselves to V/u for everything? >Aren't we supposed to 'experiment' with the higher frequencies we have >allocated? > >Its in the AMSAT by-laws to support the higher frequencies. >>From the AMSAT-NA by-laws Section three, subsection E: >Encouraging the more effective and expanded use of the higher frequency >amateur radio frequency bands. > >This would mean smaller antennas with MUCH better gain and beamwidth. > >I vote in favor of at least a L/s transponder for this. > >James W8ISS > >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.375 / Virus Database: 270.13.2/2214 - Release Date: 07/02/09 >05:54:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: The Moon is our Future
Now thats pretty good! But why is it soo good, when the HEO birds were soo hard? something missing? John B. Stephensen wrote: >Path loss for a lunar downlink at 435 MHz is 197 dB and the sky temperature >is about 75 K. If you assume a 2.5 kHz wide SSB voice downlink and 10dB >average SNR (16 dB peak) a perfect receiver needs to see -130 dBm PEP input. >Given 5 dBic of gain on the moon and 17 dBic (one long yagi) of gain on the >earth, the lunar transmitter needs to provide +45 dBm PEP (32 Watts) per >user. > >73, > >John >KD6OZH > >- Original Message - >From: "MM" >To: ; ; "Jack K." >Sent: Thursday, July 02, 2009 11:31 UTC >Subject: [amsat-bb] The Moon is our Future > > > > >>Theoretically we may have a free ride to the Moon for an Amateur radio >>repeater! >> >>In the past, the flight to the moon for a Amateur radio project has been >>cost prohibitive. We just could not afford to pay for the ride to the >>Moon. >>NASA is going to the moon with unmanned landers. NASA is open to the idea >>of flying some public service projects to the moon on their landers. >> >>Now there exists the possibility of getting a free ride to the moon, >>curtsy of NASA. >> >>What we need are the following: >> >>A stable club with funding to build a simple transponder project. >>A plan for a simple transponder (KISS no complex P3E). >>A link budget plan for a Moon transponder. >> >> >>One theory: >>We need a simple Mode-J transponder (2-meters up, 440 down). >>Low power consumption. >>Assume minimal antenna gain from the Lander (3 dBd on each antenna) >>Assume transmitter power 5-10 watts. >> >>Questions: >>What’s the link budget? >>How much gain will be needed on earth for such a setup? >>Can we build a working mockup in 1 year or less. >> >>The Moon is within Reach. Let’s Go for IT. >> >>Miles WF1F MarexMG.org >> >> >>--- On Wed, 7/1/09, Jack K. wrote: >> >> >> >>>From: Jack K. >>>Subject: [amsat-bb] Rebuttal - Re: Unused sats >>>To: kg4...@gmail.com, amsat-bb@amsat.org >>>Date: Wednesday, July 1, 2009, 4:46 PM >>>I have to disagree in the strongest >>>of terms about disregarding HEOs "for >>>now" which in essence will mean to become forever. Until, >>>or unless, we >>>could come up with something along the lines of a "Cell" >>>system of leos, we >>>are missing one of the major advantages of Satellites and >>>that is almost >>>guaranteed communications for long periods (several hours) >>>at a time... I am >>>in no way denigrating LEOs as they have their place, but in >>>the major schema >>>of things HEOS will and always have rule given the state of >>>communications >>>art... >>> >>>I understand the desire to "do something" but I suggest >>>that the major >>>thrust should be directed at getting a transponder on the >>>moon (or Mars) or >>>some more KISS type HEOs up... Cubesats can take care of >>>themselves if we >>>do, Heck I would even join in and participate in something >>>like I just >>>mentioned, I just can not get excited about "Contest style" >>>contacts with a >>>5-12 min window most of the time... I do that on 2 meters >>>scatter all I >>>want, >>> >>>DE Jack - KD1PE >>> >>> >>>- Original Message - >>>From: "David - KG4ZLB" >>>To: >>>Sent: Wednesday, July 01, 2009 4:09 PM >>>Subject: [amsat-bb] Re: Unused sats >>> >>> >>> >>> All good points but forget the HEO's for now - we just >>>need a good >>> >>> source of regularly launched easy sats in LEO to >>>augment the few working >>> >>> birds we have and replace what we have to as they fall >>>out of the sky or >>> >>> just stop working. >>>___ >>>Sent via amsat...@amsat.org. >>>Opinions expressed are those of the author. >>>Not an AMSAT-NA member? Join now to support the amateur >>>satellite program! >>>Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb >>> >>> >>> >> >> >>___ >>Sent via amsat...@amsat.org. Opinions expressed are those of the author. >>Not an AMSAT-NA member? Join now to support the amateur satellite program! >>Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb >> >> >> > >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.375 / Virus Database: 270.13.2/2214 - Release Date: 07/02/09 >05:54:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite pr
[amsat-bb] Re: The Moon is our Future
This I also agree with. While the Moon would be a flashy cool thing, In actuality it's less productive than a GEO bird. Now two geo birds with their dead zones out in the empty Pacific, Linked together would be the most awesome system yes? Joe WB9SBD Armando Mercado wrote: >Hi Dave, > >Thanks for your comments. > >If the "international project" approach were >a successful model we would have a constellation >of amateur satellites in HEO/GEO flying now. >But, different space groups have different >priorities. > >I am not opposed to a lunar repeater, but >I think we can get a bigger bang for the buck >by pursuing other opitions. > >To me this sounds like a one time stunt that >will take most of our already limited resources. > >73's Armando N8IGJ > > - Original Message - > From: D R Mynatt > To: Armando Mercado > Sent: Thursday, July 02, 2009 5:28 PM > Subject: Re: [amsat-bb] Re: The Moon is our Future > > > A moon repeater/datacom/SSTV/cw whatever else we can do, could be > coordinated with *all* the various amateur groups, not just AMSAT-NA. This > could make this an international project, similar to ESMO and ASMO projects > under way now. It would be financially feasible if, for instance, we landed > first (probably not going to happen) and, if I remember correctly, collect > the cash prize for the first non-commercial moon landing. I think that's > still out there, isn't it? > > Dave//KA0SWT >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.375 / Virus Database: 270.13.2/2214 - Release Date: 07/02/09 >05:54:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: The Moon is our Future
This is all good except for one thing, The IF window is 10 times too small. Look at the mess the FM single channel birds are with their tiny surface foot print. Imagine now a whole hemisphere worth of people trying to use it at once. The thing would be useless i8cvs wrote: >- Original Message - >From: "MM" >To: ; ; "Jack K." >Sent: Thursday, July 02, 2009 1:31 PM >Subject: [amsat-bb] The Moon is our Future > > > >>We need a simple Mode-J transponder (2-meters up, 440 down). >>Low power consumption. >>Assume minimal antenna gain from the Lander (3 dBd on each antenna) >>Assume transmitter power 5-10 watts. >> >>Questions: >>What’s the link budget? >>How much gain will be needed on earth for such a setup? >>Can we build a working mockup in 1 year or less. >> >>The Moon is within Reach. Let’s Go for IT. >> >>Miles WF1F MarexMG.org >> >> > >Hi Miles, WF1F > >The gain of the 2 meters antenna on the Lander is 3 dBd = 5.14 dBi >Assume that the Noise Figure of the 2 meter receiver is 0.5 dB = 35 kelvin >and the sky temperature as seen by the 2 meter Lander antenna looking at >the earth is conservatively 290 kelvin but (probably more ). >The isotropic path loss earth-moon in 2 meters at an average distance of >380.000 km is 187 dB >You don't specify the IF bandwidth of your transponder so that for >simplicity I will assume that only one QSO will be possible in SSB and 3 >on CW in a total BW = 2.5 KHz >With the above data the calculated Noise Floor (KTB) of the above 2 meter >Lander receiver is -139 dBm >We assume to use an earth 2 meters antenna with a gain of 13 dBi and a power >of 100 watt pep in 2 meters. > >UPLINK BUDGED: > >Earth TX power 100 watt.+ 50 dBm >Earth antenna gain. .+ 13 dB > -- >Earth EIRP.+ 63 dBm >2 m isotropic attenuation earth-moon..-187 dB > -- >Isoptropic power received on the moon .- 124 dBm >2 meters Lander antenna gain.+ 5 dBi > -- >Power applied to the 2 m Lander receiver..- 119 dBm >Lander receiver 2 m Noise Floor...- 139 dBm > -- >S/N ratio available from the Lander receiver.. + 20 dB > >COMMENT: >With a 2 meter signal +20 dB above the noise floor the >70 cm TX on the Lander transponder is in condition to >supply a noise-less power between 5 to 10 watt pep to >the 70 cm TX antenna. > >DOWNLINK BUDGED: > >The gain of the 70 cm antenna on the Lander is 3 dBd = 5.14 dBi >and the 70 cm power is 10 watt pep >Assume that the Noise Figure of the 70 cm earth receiver is >0.5 dB = 35 kelvin and the sky temperature as seen by the 70 cm >antenna looking at the moon is 75 kelvin >Assume that the antenna gain of the 70 cm earth receiver is 18 dBi >The isotropic path loss earth-moon in 70 cm at an average distance of >380.000 km is 197 dB >With the above data the calculated Noise Floor (KTB) of the 70 cm >ground receiver is -144 dBm > >Lander 70 cm TX power 10 watt...+ 40 dBm >Lander antenna gain...+ 5 dBi > -- >70 cm EIRP from the moon...+ 45 dBm >70 cm moon-earth isotropic attenuation .-197 dB > -- >70 cm power available in to isotropic antenna -152 dBm >70 cm earth receiving antenna gain..+ 18 dBi > -- >70 cm power on input of the earth receiver.-134 dBm >70 cm Noise Floor of the earth receiver..-144 dBm > -- >S/N ratio at the output of 70 cm receiver...+ 10 dB > >COMMENT: >Using a Lander transponder on the moon with 2 meters and >70 cm antenna's gain in the order of 5 dBi will not produce >serious problems of pointing at the earth due of libration. >If the Lander transponder is capable to develope 10 watt >pep and the IF bandwidth is very narrow in the order of >2.5 KHz it is possible to accomodate one SSB QSO or 3 CW >QSO just using the actually available TX and RX equipments for >satellite communications i.e. >For the uplink in 2 meters 100 watt pep and a 13 dBi antenna gain >For the downlink in 70 cm a receiving system with an overall Noise >Figure of 0.5 dB and antenna gain of 18 dBi >The rate of change of the frequency due of doppler shift in 2 meters >and 70 cm is very slow and easily manually compensated even into >only a 2.5 KHz bandwidth >The antenna polarization is very impor
[amsat-bb] Re: [SPAM] Re: Moon can cost less than HEO/GEO
James French wrote: >We have been discussing building and packaging a system that is >SEPARATE from the rest of the landing craft that would take up weight >and not supply ANY benefit to any mission support. > >What if we change that to from just asking for a FREE ride to helping >provide mission specific support ALONG with supplying the band width >for our needs? If we could build a package that would support the >PRIMARY mission and then could be switched over for our needs during or >after the mission, don't you think that we MAY get a better >consideration for a FREE ride for these ideas? > > I like that, >Domenico, I8CVS, brings up a good point about IF bandwidth also. >1) How many QSOs do we want to be able to have on this? > FM would be a HUGE waste of resources (even though a modulated CW > beacon may be an idea to entice some of the FM users). > a) 2 SBB/6 CW? > b) 5 SSB/15 CW? > c) 10 SSB/30 CW? > > How about PSK? I've seen like 20 of them in a single ssb window, and pretty deep into the noise still too. something to think about? >2) How much electrical power do we need to supply for each of these > amounts? >3) IS it feasible to have that many or do we have to limit ourselves? > >Kenneth brings up good points also. >1) How LONG do we PLAN this to be usable? >2) Power source - solar? nuclear? battery (even though I don't >think they would last very long, still have to consider them here)? >3) WHAT do we need to do to certify this package for flight? >4) HOW many do we need to build to get ONE certified as flight ready > hardware? >5) How do we control it? >6) How complicated do we want to go? > >As far as the Earth station, the bigger the better as always. But >anything above 23cm would be feasible EVEN for that antenna restricted >home station that is becoming the norm now a days. > >45 element 1.2GHz antenna: >Boom Length: 144 inches >Weight: 5 pounds >Gain: 20dbi >3db Beamwidth: 16 degrees > >52 element 2.4GHz loop antenna: >Boom Length: 96 inches >Weight: 3 pounds >Gain: 21 dbi >3db Beamwidth: 14 degrees > >45 element 3.4GHz antenna: >Boom Length: 60 inches >Weight: 1.5 pounds >Gain: 20dbi >3db Beamwidth: 16 degrees > >These are figures that I have handy for antennas I already have. Each of >these antennas can be had from Directive Systems for about one hundred >and fifty dollars each as a kit, more if you want it already assembled. >I give these as EXAMPLES to help out. Preamps and amplifiers are extra. >But even those are cheap if you want to tinker some. I found a 75 watt >2.4GHz amplifier for 20 dollars at Dayton this year that would give me >about half that if I run it on 12 volts instead of 26 volts. > >1.2GHz/2.4GHz antennas: 300 dollars >1.2GHz preamp: 50 dollars >2.4GHz amplifier: 25 dollars >sequencer: 60 dollars >1.2GHz transverter: 100 dollars (W1GHZ type) >2.4GHz transverter: 100 dollars (W1GHZ type) >Misc. parts:100 dollars >TOTAL: 735 dollars (+/-) >This is presuming that the station ALREADY has a 2m SSB radio >and no homebrewing other than putting together the W1GHZ transverters, >sequencer, 2.4GHZ amplifier, and antenna mounting hardware. So cost CAN >be kept down to about 1000 dollars, maybe even less than the 735 dollar >figure if the station is very creative (possibly around the 500 dollar >mark then). > >If the plan stays at using 2m and 70cms, antennas do get bulkier and >harder to handle for teardown and setup. ( I know - I am preaching to >the choir here...) > >Figures are based on what I already have handy, so I may have to add or >change depending on what bands are used. > >James W8ISS >= >On Thu, 2009-07-02 at 21:29 -0500, Ransom, Kenneth G. (JSC-OC)[BARRIOS >TECHNOLOGY] wrote: > > >>I realize this is still very early in the dreaming stage but it would be >>nice to start seeing some realistic proposals soon. How about starting with >>a blank worksheet that outlines the desirements and requirements. This would >>give folks some specifics to address. >> >>*LUNAR System* >>Modulation type: >>Mode: >>Power source: >>Lunar transmitter (type, output power and band): >>Lunar TX antenna (type and gain): >>Lunar receiver (type and band): >>Lunar RX antenna (type and gain): >>Lunar controller (type and capability): >> >>Delivery deadline for flight certified hardware to be launched: >>Length of time the system is expected to operate: >>Periods that the system is expected to be available for use: >> >>Once you have some general ideas as to what the items are then you will have >>a good idea of the total weight, size and what it will cost to buy, build and >>certify for spaceflight. It would also be nice to know what sort of station >>equipment would be needed to use this lunar system. >> >>*EARTH Station* >>Description of minimal Earth station capable of operation through above >>mentioned lunar system: >>Transmitter (type, output power and band): >>TX antenna (type and gain
[amsat-bb] Re: The Moon is our Future
someone I can't remember wheremade a ultra cool linear transponder recently, too bad it most likely isn't rad hard. for it was like dirst cheap, but can't remember who made it. Joe WB9SBD Gordon JC Pearce wrote: >On Thu, 2009-07-02 at 11:15 -0400, David - KG4ZLB wrote: > > >>On the contrary, we need more LEO's to augment and replace the existing >>aged fleet. >> >>Whilst AMSAT works on the HEO's lets put some of our efforts towards the >>Universities who seem to regularly put up 2/70 satellites! >> >> >> > >I'm relatively new to both amateur radio and the LEO satellites, I'll >admit it. But I just can't see why we aren't constructing and launching >more mode V/U LEO sats. A couple of the cubesats that are already >flying are basically using stripped-down commercial radios in an >off-the-shelf bus. It *cannot* be that hard to do, *if* you avoid >getting bogged down in "clever" stuff. > >I appreciate that a mode V/U satellite would need to be a little more >sophisticated than a pair of cheap Chinese HTs gaffa-taped together and >thrown out the driver's window of a passing Space Shuttle, but the fact >remains that such a contraption *would* actually work, briefly. Most >people on this list probably have enough junk lying around to build a >viable mode V/U transponder if not a whole satellite (I'd need to hit >eBay after payday for the solar panels, and scrounge around in Clyde >Space's bins for the chassis). > >The tricky bit is getting launches, but it must be possible somehow. > >How hard can it be? > >Gordon 2M0YEQ > >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.375 / Virus Database: 270.13.3/2216 - Release Date: 07/03/09 >05:53:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: The Moon is our Future
Been Thinkin', John B. Stephensen wrote: >A more meaningful appoach for an exercise like this is to start with DC >power input for the entire package. Receivers consume power and transmitters >(especially linear ones) are inefficient and the efficency goes down with >increasing frequency. On the moon, you also have to heat the electronics at >night to prevent failure. > > What difference is there and why if there is any a difference of shadow cold on the moon, vs shadow in orbit? If anything i would think you would get some thermal radiation heating from the soil. wjereas in space you don't get this benefit. >Linear microwave power amplifiers have 20-35% efficiencies and VHF >amplifiers might reach 50%. You can make more efficient amplifiers by >converting the output signal into magnitude and phase or frequency >components and using class C, D or E amplifiers. However, the added >circuitry (whether analog or digital) also consumes power. FM makes sense >for single channel transponers as the amplifiers can be nonlinear and you >can get 80% efficiency at VHF. SSB amplifiers have a double inefficiency as >you must design for peak power output which is 4-5 times the average power >output. Amateur HEO satellites have used SSB for multichannel applications >as you can count on the voice peaks for different users to occur at >different times and design for the average power of all users. However, you >need lots of users to reach this goal. > >73, > >John >KD6OZH > >- Original Message - >From: "i8cvs" >To: "Joe" >Cc: "Jack K." ; "AMSAT-BB" ; > >Sent: Friday, July 03, 2009 14:41 UTC >Subject: [amsat-bb] Re: The Moon is our Future > > > > >>Hi Joe, >> >>The specification given by Miles WF1F is for a Lander transmit power of 5 >>to 10 watt in 70 cm from the moon.My calculation shoves that a single SSB >>station to be received in 70 cm with a S/N ratio of 10 dB on the earth a >>power of 10 watt in 70 cm is necessary on the moon. >> >>If you like an IF window 10 time greater i.e. 250 KHz to accomodate more >>stations at the same time than the Lander transponder must have the >>capability to get around 100 watt wich is out the WF1F specifications. >> >>73" de >> >>i8CVS Domenico >> - Original Message - >> From: Joe >> To: i8cvs >> Cc: MM ; kg4...@gmail.com ; AMSAT-BB ; Jack K. >> Sent: Friday, July 03, 2009 12:59 PM >> Subject: Re: [amsat-bb] Re: The Moon is our Future >> >> >> This is all good except for one thing, >> >> The IF window is 10 times too small. >> >> Look at the mess the FM single channel birds are with their tiny surface >>foot print. Imagine now a whole hemisphere worth of people trying to use >>it at once. The thing would be useless >> >> i8cvs wrote: >>- Original Message - >>From: "MM" >>To: ; ; "Jack K." >> >>Sent: Thursday, July 02, 2009 1:31 PM >>Subject: [amsat-bb] The Moon is our Future >> >> >>We need a simple Mode-J transponder (2-meters up, 440 down). >>Low power consumption. >>Assume minimal antenna gain from the Lander (3 dBd on each antenna) >>Assume transmitter power 5-10 watts. >> >>Questions: >>What’s the link budget? >>How much gain will be needed on earth for such a setup? >>Can we build a working mockup in 1 year or less. >> >>The Moon is within Reach. Let’s Go for IT. >> >>Miles WF1F MarexMG.org >> >> >>Hi Miles, WF1F >> >>The gain of the 2 meters antenna on the Lander is 3 dBd = 5.14 dBi >>Assume that the Noise Figure of the 2 meter receiver is 0.5 dB = 35 kelvin >>and the sky temperature as seen by the 2 meter Lander antenna looking at >>the earth is conservatively 290 kelvin but (probably more ). >>The isotropic path loss earth-moon in 2 meters at an average distance of >>380.000 km is 187 dB >>You don't specify the IF bandwidth of your transponder so that for >>simplicity I will assume that only one QSO will be possible in SSB and 3 >>on CW in a total BW = 2.5 KHz >>With the above data the calculated Noise Floor (KTB) of the above 2 meter >>Lander receiver is -139 dBm >>We assume to use an earth 2 meters antenna with a gain of 13 dBi and a >>power >>of 100 watt pep in 2 meters. >> >>UPLINK BUDGED: >> >>Earth TX power 100 watt.+ 50 dBm >>Earth antenna gain
[amsat-bb] Re: Moon can cost less than HEO/GEO
I agree on the Lunar X Prize, http://www.googlelunarxprize.org/ There are 19 teams so far in the chase, why do we not contact every one of them with the proposal? there is 30 million purse there a waiting. we could even say give us the ride and they can keep the prize Joe WB9SBD Armando Mercado wrote: >Greetings, > >First of all, I appreciate the efforts of the dedicated few of >AMSAT that actually go out and make things happen. >You don't hear "Thank you" often enough. > > > >Being this early in the idea phase, there are a lot of >questions and unknowns. What frequencies to use and >what the link requirements will be can all be worked out. > >The bigger question for me is if the moon is a good platform >for an amateur transponder. No doubt it is technically doable. >If the decision is based only on launch availability--It's the moon >or nothing at all--then to the moon we go. But let's all >understand what we are getting into. > >To the best of my knowledge, NASA does not now have an >unmanned lunar lander mission that has been approved, although >there is a lander planned in the greater scheme of things. Perhaps >someone could direct me to some current information. > >The last I knew, the plan called for a lander referred to as RLEP-2. >It was going to be a lander/rover powered by RTG's with a 1 year >mission to explore Shackleton crater near the moon's south pole. >The cost was going to be in the $400-$750 million range. The launch >vehicle was going to have excess capacity so it was proposed that >3-4 mini satellites be deployed in lunar orbit to do remote sensing >AND provide a communication link for the lander. > >So, if this is the mission we are talking about putting our transponder >on, it sounds like we won't hear it on earth once the rover drives >into the crater. Putting our transponder on one of the mini satellites >sounds like a better plan. > >Again, I had difficulty finding current information on NASA's unmanned >lunar lander plans. The last I read anything about RLEP-2 was that it >was in serious trouble because of cost and was going to be sharply >cut back. > >If our NASA host spacecraft will take care of all the housekeeping >and provided free power, then a low cost transponder sounds like >something we can do (although AMSAT-NA currently does not have >a satellite lab--we may need to contract out the transponder work). >We just need to understand we will not have control of the on/off >switch (the repeater on the ISS or the Planetary Society's >microphone on the Mars Phoenix lander for example). > >The days of getting a free launch is over, and it is too bad the Intelsat >ride share idea did not pan out for us. As I have said before, I am >not opposed to a transponder on the moon, I just have a lot of >unanswered questions. > >Thanks again to the dedicated few at AMSAT that make things happen. > >Armando, N8IGJ > > > > > > >>Date: Thu, 2 Jul 2009 18:14:59 -0700 (PDT) >>From: MM >>Subject: [amsat-bb] Moon can cost less than HEO/GEO >>To: amsat-bb@amsat.org >>Message-ID: <228402.31352...@web56404.mail.re3.yahoo.com> >>Content-Type: text/plain; charset=utf-8 >> >> > > > >High orbit launch prices > > > >>I can?t afford that and I do not know anyone at Huges, so I am looking into >>the piggyback options. Let some other company pay the big bucks for the >>flight >and navigation and just tag along for the ride. >> >> > >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.375 / Virus Database: 270.13.3/2216 - Release Date: 07/03/09 >05:53:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: dream your own sat
Ion Drive, Just kidding! Joe WB9SBD Trevor . wrote: >The recently launched TerreStar-1 is designed to provides emergency comms >capability >http://www.southgatearc.org/news/july2009/terrestar_1_launched.htm > >The basic problem is that Amateurs want linear transponder satellites in >orbits above 1400 km in order to provide reasonable DX opportunities and pass >times greater than 20 minutes. But "cheap" launches only seem to be available >for 500-800 km orbits, so we need to find a way to increase the orbit of say a >triple-cubesat from 700 km to 1400 km using a non-combustive technology so as >not to upset the cheap launch provider. > >Providing the radio communications is by comparison a trival exercise it's >finding a means (solar powered thrusters ?) to increase orbital height that's >the tricky part. > >73 Trevor M5AKA > >--- On Sun, 5/7/09, John B. Stephensen wrote: > > > >>From: John B. Stephensen >>Subject: [amsat-bb] Re: dream your own sat >>To: kc6...@cox.net, "'rupert red'" , amsat-bb@amsat.org >>Date: Sunday, 5 July, 2009, 9:54 PM >>The problem is that amateur radio >>doesn't significantly reduce the cost of a >>satellite. Any interest by the Red Cross would not be in >>the satellite but >>in human volunteers that might come with it. Unfortunately, >>the LEO >>satellites that hams can afford generate little interest in >>this forum. >> >>73, >> >>John >>KD6OZH >> >>- Original Message - >>From: "Art McBride" >>To: "'rupert red'" ; >> >>Sent: Sunday, July 05, 2009 19:00 UTC >>Subject: [amsat-bb] Re: dream your own sat >> >> >> >> >>>Rupert, >>>I think that is a fair assumption on your part, but >>> >>> >>only because the are >> >> >>>no >>>new ideas being presented that have commercial >>> >>> >>potential that can use >> >> >>>Amateur Radio as an inexpensive to proof of concept. >>>In the present Amateur Radio community only Emergency >>> >>> >>Communications is >> >> >>>getting the publicity. Perhaps FEMA or the Red Cross >>> >>> >>might help pay for an >> >> >>>emergency communication satellite otherwise it is >>> >>> >>LEO's forever! >> >> >>>Art, KC6UQH >>> >>>-Original Message- >>>From: amsat-bb-boun...@amsat.org >>> >>> >>[mailto:amsat-bb-boun...@amsat.org] >>On >> >> >>>Behalf Of rupert red >>>Sent: Sunday, July 05, 2009 4:47 AM >>>To: amsat-bb@amsat.org >>>Subject: [amsat-bb] dream your own sat >>> >>> >>>Hallo all... >>> >>>from a while I'm hearing about MANY different and >>> >>> >>interesting satellite >> >> >>>solutions... >>> >>>LEO, MEO, HEO, GEO... MOON !!! >>> >>>The problem is only ONE ! >>> >>>Amateur radio community has no money for this project, >>> >>> >>and will never >> >> >>>have! >>> >>>Amsat & Co will never be able to collect >>> >>> >>millions I red on this bb >> >> >>>that >>>hams has no money for an expensive ground station... >>> >>> >>then how can they >> >> >>>send >>>many money to Amsat? >>> >>>Public and private organizations all over the world >>> >>> >>have not an high >> >> >>>consideration of hams, and will never invest founds >>> >>> >>for them. >> >> >>>The conclusion is only ONE... we will never see a new >>> >>> >>oscar satellite in >> >> >>>the >>>sky (at least some student's cube). >>> >>>Let's all dream together guys. >>> >>> >>> >>>Best 73 Rupert >>> >>> >>> >>> >>_ >> >> >>>Condividi e organizza le tue immagini con >>> >>> >>Windows Live Foto. >> >> >>>http://www.microsoft.com/
[amsat-bb] Re: Cleaning oxidation from antenna
The scotchbrite with some sort of a liquid like mineral oil really helps cut it fast and at the same time remove the oxidation away so it doesn't clog the scotchbrite. Jim Jerzycke wrote: >ScotchBrite pads also work very well, and don't leave lots of little >conductive strands floating around. >Jim KQ6EA > > >--- On Thu, 7/9/09, Clint Bradford wrote: > >From: Clint Bradford >Subject: [amsat-bb] Re: Cleaning oxidation from antenna >To: amsat-bb@amsat.org, amsat-bb@amsat.org >Date: Thursday, July 9, 2009, 9:42 AM > > > >>>... Nothing seems to be pitted or deteriorated, just "ugly". >>> >>> > >Fine steel wool. Then spray Marine Spar Varnish on it (after connecting cable >and properly sealing that connection). > >Clint Bradford >http:/www.k6lcs.com > >-- >Clint Bradford, K6LCS >http://www.clintbradford.com >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.387 / Virus Database: 270.13.8/2227 - Release Date: 07/09/09 >05:55:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Evidence of moon landings....!
Explain me this,,For something as big as NASA to be a hoax there would be 10s of thousands of people in on it for 50+ years. and not one of them has talked? Thats unbelivable. Take crop circles, which is a fairly obvious hoax, there was 2 old drunks in england doing them and they talked about it and showed how they did them after just a couple of years. Yet there are people who actually still think that flying saucers are making them. William Leijenaar wrote: >Hi AMSATs, > >The news is full again of the moon landings, where NASA claims to have new >evidence, which makes me laugh again. I have the same idea like LeRoy, KD8BXP. >When the information is only from one source it is not reliable at all, every >scientist should know. > >This doesn't mean that I state no man has been on the moon, for me it is just >not clear. >I would like to see pictures from another nations satellite, in higher >resolution. I believe we will soon know, as there are several countries >wanting to go to the moon. I am looking forward to their pictures and the >state of the equipment left on the moon, in case the landings were no film >studio work :o) > >For the moment I keep it more close to the earth with my small transponder >work, >Maybe in the future there will be a chance to have a moon-ponder :o) > >73 >William >--- > > > >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.392 / Virus Database: 270.13.20/2250 - Release Date: 07/20/09 >06:16:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Evidence of moon landings....!
Why does everyone continue to try to talk to this Brain dead person. it really goes to show how the FCC has dumbed down the tests. geez STeve Andre' wrote: >On Tuesday 21 July 2009 02:52:08 Edward Cole wrote: > > >>>LeRoy, >>> >>>I'm not sure how you can have a source other than NASA, other than two >>>hams who made independant recordings of Apollo transmissions. In 1971 >>>(summer issue) a QST article talks of Dick Knadle(sp?) KRIW who got some, >>>and another ham, I believe W4HHK received signals as well. >>> >>>I'd also bet the Russian space agency has stuff. >>> >>>Please don't take this the wrong way, but if you have questions about any >>>"fakery" of moon landings, find the Myth Busters TV show. They did a >>>*really* good job of debunking several myths about how things were faked. >>> >>>I do not find this discussion OT for Amsat-bb, because this affects us. >>>It erodes the effort of tens of thousands of technical people, and has >>>ripple effects for the USA, far beyond the original topic. >>> >>>--STeve Andre' >>>wb8wsf en82 >>> >>> >[snip] > > >>Steve you can add my witness of the Lunar orbiter signal on S-band >>received on a ten foot comm dish that my supervisor with JPL set up >>in his yard using a diode mixer and a microwave signal generator for >>LO. The signal exhibited expected Doppler shift and every 20-minutes >>or so it dropped out (occulted by the Moon as the orbiter orbited >>behind). This was not Apollo-11 but one of the other missions >>afterward, to memory (long time ago - 1971). We both worked at >>Goldstone tracking facility back then. We only detected the carrier >>since the dish was insufficient size for recovering the modulated signal. >> >>73, Ed - KL7UW (then K8MWA/K6) >> >> > >Wow... I have never talked with someone who heard "raw" signals from >Apollo before. It must have been an amazing experience. So not quite >enough to decode it, but enough to get the carrier. I'm sure noise has >never been as exciting, before or since. ;-) > >Thanks for this. > >--STeve Andre' >wb8wsf en82 >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.392 / Virus Database: 270.13.21/2252 - Release Date: 07/21/09 >05:58:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: ANDE-2 Deployment
Hi Bob, have any idea as to what the telemetry may consist of? And I'm assuming this will be a similar project? measure atmospheric drag? Too bad they either wouldn't allow it, or for whatever reason the two birds didn't have a ground user capability. This would be a perfect test for something off the shelf so to speak, no rad hardened stuff. just off the shelf couple hundred bucks of something, wouldn't that have been interesting.? Joe WB9SBD Robert Bruninga wrote: >The two ANDE satellites (Castor and Pollux) will be deployed >from the Space Shuttle now that it has separated from the ISS. >Both satellites will be transmitting on 145.825 MHz. Castor will >transmit telemetry every 30 seconds. Pollux every 33 seconds. >Both are transmitting 1200 baud AX.25 packet Telemetry. > >Most of the info is on the website: >https://goby.nrl.navy.mil/ANDE. > >Other than that, I don't have much detail information since this >was built by a different team than our original ANDE project. >The amateur payloads were developed by the Amateur Radio Club at >the Naval Research Labs and got a ride on the ANDE spheres like >we did a few years ago. > >Bob, WB4APR > >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.392 / Virus Database: 270.13.35/2270 - Release Date: 07/29/09 >06:12:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: ANDE-2 Deployment
Pretty cool, But Ok I see what is all in this thing, but holy cow,,, what is in it that makes it weigh 140 POUNDS!!! a 19" sphere, wow! Joe WB9SBD g7...@g7iii.net wrote: >Hi Joe, > >You Wrote: > > > >>have any idea as to what the telemetry may consist of? >> >> > >Telemetry is documented on the website Bob referenced, on each >Satellite's own page, see: > >https://goby.nrl.navy.mil/ANDE/Castor.html and >https://goby.nrl.navy.mil/ANDE/Pollux.html > >TX is on 145.825, so any Satgate should pick them up and transfer >the data to APRS-IS. > >I suppose I should go update my APRS/PCSAT/PCSAT2/ANDE telemetry decoder >now. Wish I'd realised these were going to be this "open" earlier *mutter*. > > >73s > >Iain >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.392 / Virus Database: 270.13.35/2270 - Release Date: 07/29/09 >06:12:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: ANDE-2 Deployment
Ok, The next question is then,, WHY? when all we ever hear all the time is Bitch ,, Bitch,, BITCH,,, about the high cost per pound to get something into orbit? Here again, instead of thick shell, why not pack in some useful electronics? DUH? Joe WB9SBD Ivan Galysh wrote: >The hemispheres are about 1/2 inch thick solid aluminum. It's built to >be heavy. > >Ivan > > >Joe wrote: > > >>Pretty cool, >> >>But Ok I see what is all in this thing, but holy cow,,, what is in it >>that makes it weigh 140 POUNDS!!! a 19" sphere, wow! >> >>Joe WB9SBD >> >>g7...@g7iii.net wrote: >> >> >> >> >>>Hi Joe, >>> >>>You Wrote: >>> >>> >>> >>> >>> >>> >>>>have any idea as to what the telemetry may consist of? >>>> >>>> >>>> >>>> >>>> >>>Telemetry is documented on the website Bob referenced, on each >>>Satellite's own page, see: >>> >>>https://goby.nrl.navy.mil/ANDE/Castor.html and >>>https://goby.nrl.navy.mil/ANDE/Pollux.html >>> >>>TX is on 145.825, so any Satgate should pick them up and transfer >>>the data to APRS-IS. >>> >>>I suppose I should go update my APRS/PCSAT/PCSAT2/ANDE telemetry decoder >>>now. Wish I'd realised these were going to be this "open" earlier *mutter*. >>> >>> >>>73s >>> >>>Iain >>>___ >>>Sent via amsat...@amsat.org. Opinions expressed are those of the author. >>>Not an AMSAT-NA member? Join now to support the amateur satellite program! >>>Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb >>> >>> >>> >>> >>> >>>No virus found in this incoming message. >>>Checked by AVG - www.avg.com >>>Version: 8.5.392 / Virus Database: 270.13.35/2270 - Release Date: 07/29/09 >>>06:12:00 >>> >>> >>> >>> >>> >>> >>___ >>Sent via amsat...@amsat.org. Opinions expressed are those of the author. >>Not an AMSAT-NA member? Join now to support the amateur satellite program! >>Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb >> >> >> >> > >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.392 / Virus Database: 270.13.35/2270 - Release Date: 07/29/09 >06:12:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Avoiding statics on helix antennas
don't forget the velocity factor too! My first thought was to try to find out where the static is coming from in the firstplace and fix that. Why put a band-aid on a cut when you prevent the cut in the first place? Joe WB9SBD i8cvs wrote: >Hi Lars, OZ1BXM > >The shorted quarter-wave coax line suggested in the ARRL Handbook 2008 and >2009 pages 23.20-21 will work great because it is a short circuit for the >static electricity and a theoretically infinite impedance at the resonant >frequency so that for the RF input signal it is completely ignored by the >input stage of a converter or preamplifier. > >Remember that a quarter-wave transmission line when shorted at one end >shows an infinite impedance in theory at the open end as you can see using >the Smith Chart. > >If you enlarge a shorted quarter-wave by any even or odd number of 1/2 >wavelenght of coax line thing do not changes because a 1/2 wavelenght of >transmission line represents a full turn of the Smith Chart. > >Do it as suggested by the Handbook ! > >73" de > >i8CVS Domenico > >- Original Message - >From: "Lars Petersen" >To: >Sent: Tuesday, August 04, 2009 6:01 PM >Subject: [amsat-bb] Avoiding statics on helix antennas > > > > >>Hello AMSAT list, >> >>I have a problem caused by static electricity building up on my two helix >>antennas (23 cm and 13 cm). Two converters have already been zapped, so I >>have to do something about it. >> >>What measure would you recommend to avaoid statics building up on helix >>antennas? >> >>Does anyone have experience using the shorted quarter-wave-stub mentioned >> >> >in > > >>"The ARRL Handbook 2008" pages 23.20-21? >> >>Vy 73, Lars Petersen, OZ1BXM, >>AMSAT-Member 36222, >>oz1...@pobox.com >>www.oz1bxm.dk >> >>___ >>Sent via amsat...@amsat.org. Opinions expressed are those of the author. >>Not an AMSAT-NA member? Join now to support the amateur satellite program! >>Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb >> >> > > > > > > >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.406 / Virus Database: 270.13.44/2283 - Release Date: 08/05/09 >05:57:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Elk on tower
Ours usually tend to run in front of cars. Reicher, James wrote: >You may do it on the tower, but here in Missouri, we usually mount our >Elk over the fireplace. :) > >73 de W0HV, Jim in Raymore, MO >Light travels faster than sound... This is why some people appear >bright until you hear them speak. > >-Original Message- >Date: Thu, 6 Aug 2009 11:23:11 -0600 >From: Jerry Felts >Subject: [amsat-bb] Elk on tower >To: amsat-bb@amsat.org >Message-ID: > <21baf9ff0908061023o343d3c3ax8c71451893599...@mail.gmail.com> >Content-Type: text/plain; charset=UTF-8 > >How far away from the mast on my tower should I mount my Elk?? The >mast is 2" steal anf the lk will be mounted horiz at a 15 deg angle. > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Elk antenna on tower
I know some people just do not have any sence o humor any more. Geez Joe w4upd wrote: >Lighten why don't you! Considering some of the "junk" that goes on here, >these people were trying to give a light hearted view. If you were >paying attention, many of them "did" give you some constructive ideas >that you could try. > >Regards, > >Reid, W4UPD > > >Jerry Felts wrote: > > >>I didn't mean this as a joke but it seems everyone took it as a joke. >>I will try not to askany more questions here. >> >> >> >> >> >> >>No virus found in this incoming message. >>Checked by AVG - www.avg.com >>Version: 8.5.392 / Virus Database: 270.13.45/2285 - Release Date: 08/06/09 >>05:57:00 >> >> >> >> > >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.406 / Virus Database: 270.13.45/2286 - Release Date: 08/06/09 >18:17:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: New Cubesat - the Ultimate Fox Hunt
Ok, Say can anyone find me this info? The shuttle average orbital speed is 17580 MPh. So launch starts at zero, and ends up at 17580 then coming back down goes from 17580 to zero. Ok, Now what I want is,, At Time = zero it's zero MPH, at t+1 min it's now at what altitude, and what speed? at T+2 min alt and speed? at T+3 in alt and speed continue all the way to orbit. Now do it the other way, at time od de orbit burn it's at what altitude and 17580 MPh, at t+ 1 min after burn it;'s at alt and speed, etc, all the way til it has landed, does anyone have this information? Joe Bob Bruninga wrote: >One university at this year's Utah Cubesat Workshop, is designing a re-entry >cubesat. > >Talk about the ultimate ham radio fox hunt! Find this pebble somewhere over a >few million square miles... > >The problem is having a transmitter to survive the re-entry... One figure is >that about 300 Killowatt Hours of energy has to be disipated in a few minutes. > >Why is it that all re-entries always end in the ball of fire over just a few >minutes. Why cannot the re-enetry energy be disipated over a longer period to >make it more survivable. Of course, if they could, they would. It appears to >be the nature of the beast. You are entering an ever denser medium, so the >drag has to escallate and you end up with the 6/7 minute burn. > >What if the surface of the re-entry vehicle radically changed during the >re-entry phase? As the density of the atomosphere increased, the surface area >decreases. An ablative system that instead of burning off a thin skin of >material as in most re-entry systems, you planned on burning off 95% of the >original drag volume? What re-entry profile could be achieved Could we make >a golfball core "pinger" that could survive? > >With the cheap $8k launches and only 3 month mission life, this idea of >concentrating on making an interesting mission at the re-entry phase is a new >opportunity.. > >The ultimate fox hunt? > >Bob, WB4APR >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.406 / Virus Database: 270.13.48/2292 - Release Date: 08/09/09 >08:08:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: New Cubesat - the Ultimate Fox Hunt
Exactly David, This was my reasoning for trying to get the data I asked for in a earlier message. I have been asking this for Years and No one EVER has been able to give me this info. if i was a conspiracy guy i'd be in the boat with the moon landing guys that orbital space travel doesn't happen. Or at least manned never has happened, But i'm not. but i am frustrated that the speed vs altitude at take off and re entry sseems to be totally un available. because look at that at take off we go from zero to 17580 Mph in what 10 minutes or so and are in orbit. Yet the other way around gouing from 1780 to zero on 45 minutes causes the fireball effect with the friction. Why not on the way up? Thats what i want to be able ro read on the way up when it's at 60K feet it's moving at what speed, as wellas on the way down also, and every other possible altitude, I want to compare speeds at all altitudes. we can go from zero to 17580 in ten min on the way up with no fireball, but take a slower, 450% slower return rate and it almost fries to a crisp. Huh? Joe WB9SBD g0...@aol.com wrote: > > > >Or, the not so 'cube'sat structure is an aerodynamic shape made from a cast > ceramic material which glides in at a shallow angle allowing the energy to >be dissipated over a much longer period of time. >OK the solar cells burn off but an internal antenna would be OK as ceramics > are fairly transparent to RF and a battery would provide the final hour or >so of tlm. >Would love to see the temp readings as it comes down. >Would not love to be on the final end of the trajectory when it arrives. > >David G0MRF > >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.406 / Virus Database: 270.13.48/2292 - Release Date: 08/09/09 >08:08:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: New Cubesat - the Ultimate Fox Hunt
Ok we have half the numbers, This I also have gotten before a LOT, but coming back down, is no place. I want tosee these numbers. Pete Rowe wrote: >Hi Joe >Check out this URL: >http://www.aerospaceweb.org/question/spacecraft/q0183.shtml > >There is a table that shows the speed versus altitude for a shuttle launch. I >think the key thing is that while it is in the thick part of the atmosphere ( >I believe below 60k feet) the shuttle is going fairly slowly. It doesn't >really get going until it is clear of the atmosphere. > >I'm just guessing that on the return trip it is still going very fast when it >gets to the thick atmosphere and hence, since there is nothing to slow it down >except the atmosphere, it gets very hot. >Does this make sense? > >73, >Pete >WA6WOA > >--- On Sun, 8/9/09, Joe wrote: > >From: Joe >Subject: [amsat-bb] Re: New Cubesat - the Ultimate Fox Hunt >To: g0...@aol.com >Cc: amsat-bb@amsat.org >Date: Sunday, August 9, 2009, 4:47 PM > >Exactly David, > >This was my reasoning for trying to get the data I asked for in a >earlier message. > >I have been asking this for Years and No one EVER has been able to give >me this info. > >if i was a conspiracy guy i'd be in the boat with the moon landing guys >that orbital space travel doesn't happen. Or at least manned never has >happened, > >But i'm not. but i am frustrated that the speed vs altitude at take >off and re entry sseems to be totally un available. > >because look at that > >at take off we go from zero to 17580 Mph in what 10 minutes or so and >are in orbit. > >Yet the other way around gouing from 1780 to zero on 45 minutes causes >the fireball effect with the friction. > >Why not on the way up? > >Thats what i want to be able ro read on the way up when it's at 60K feet >it's moving at what speed, as wellas on the way down also, > >and every other possible altitude, > >I want to compare speeds at all altitudes. > >we can go from zero to 17580 in ten min on the way up with no fireball, >but take a slower, 450% slower return rate and it almost fries to a crisp. > >Huh? > >Joe WB9SBD > >g0...@aol.com wrote: > > > >> >>Or, the not so 'cube'sat structure is an aerodynamic shape made from a cast >>ceramic material which glides in at a shallow angle allowing the energy to >>be dissipated over a much longer period of time. >>OK the solar cells burn off but an internal antenna would be OK as ceramics >>are fairly transparent to RF and a battery would provide the final hour or >>so of tlm. >>Would love to see the temp readings as it comes down. >>Would not love to be on the final end of the trajectory when it arrives. >> >>David G0MRF >> >>___ >>Sent via amsat...@amsat.org. Opinions expressed are those of the author. >>Not an AMSAT-NA member? Join now to support the amateur satellite program! >>Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb >> >> >> >> >> >>No virus found in this incoming message. >>Checked by AVG - www.avg.com >>Version: 8.5.406 / Virus Database: 270.13.48/2292 - Release Date: 08/09/09 >>08:08:00 >> >> >> >> >> >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.406 / Virus Database: 270.13.49/2293 - Release Date: 08/09/09 >18:10:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: New Cubesat - the Ultimate Fox Hunt
Yes this does make all the sence in the world, but why tho can no one find true actual data as this IS exactly what's hhappening? I can find hundreds of pages a of data on the way up but not one single one for data onthe way down, That I would love to see. Pete Rowe wrote: >Hi Joe >Check out this URL: >http://www.aerospaceweb.org/question/spacecraft/q0183.shtml > >There is a table that shows the speed versus altitude for a shuttle launch. I >think the key thing is that while it is in the thick part of the atmosphere ( >I believe below 60k feet) the shuttle is going fairly slowly. It doesn't >really get going until it is clear of the atmosphere. > >I'm just guessing that on the return trip it is still going very fast when it >gets to the thick atmosphere and hence, since there is nothing to slow it down >except the atmosphere, it gets very hot. >Does this make sense? > >73, >Pete >WA6WOA > >--- On Sun, 8/9/09, Joe wrote: > >From: Joe >Subject: [amsat-bb] Re: New Cubesat - the Ultimate Fox Hunt >To: g0...@aol.com >Cc: amsat-bb@amsat.org >Date: Sunday, August 9, 2009, 4:47 PM > >Exactly David, > >This was my reasoning for trying to get the data I asked for in a >earlier message. > >I have been asking this for Years and No one EVER has been able to give >me this info. > >if i was a conspiracy guy i'd be in the boat with the moon landing guys >that orbital space travel doesn't happen. Or at least manned never has >happened, > >But i'm not. but i am frustrated that the speed vs altitude at take >off and re entry sseems to be totally un available. > >because look at that > >at take off we go from zero to 17580 Mph in what 10 minutes or so and >are in orbit. > >Yet the other way around gouing from 1780 to zero on 45 minutes causes >the fireball effect with the friction. > >Why not on the way up? > >Thats what i want to be able ro read on the way up when it's at 60K feet >it's moving at what speed, as wellas on the way down also, > >and every other possible altitude, > >I want to compare speeds at all altitudes. > >we can go from zero to 17580 in ten min on the way up with no fireball, >but take a slower, 450% slower return rate and it almost fries to a crisp. > >Huh? > >Joe WB9SBD > >g0...@aol.com wrote: > > > >> >>Or, the not so 'cube'sat structure is an aerodynamic shape made from a cast >>ceramic material which glides in at a shallow angle allowing the energy to >>be dissipated over a much longer period of time. >>OK the solar cells burn off but an internal antenna would be OK as ceramics >>are fairly transparent to RF and a battery would provide the final hour or >>so of tlm. >>Would love to see the temp readings as it comes down. >>Would not love to be on the final end of the trajectory when it arrives. >> >>David G0MRF >> >>___ >>Sent via amsat...@amsat.org. Opinions expressed are those of the author. >>Not an AMSAT-NA member? Join now to support the amateur satellite program! >>Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb >> >> >> >> >> >>No virus found in this incoming message. >>Checked by AVG - www.avg.com >>Version: 8.5.406 / Virus Database: 270.13.48/2292 - Release Date: 08/09/09 >>08:08:00 >> >> >> >> >> >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.406 / Virus Database: 270.13.49/2293 - Release Date: 08/09/09 >18:10:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: New Cubesat - the Ultimate Fox Hunt
Bob Bruninga wrote: >>at take off we go from zero to 17580 Mph >>in what 10 minutes or so and are in orbit. >>Yet the other way around going from 1780 >>to zero in 45 minutes causes the fireball >>effect with the friction. >> >>Why not on the way up? >> >> > >It does, its just that all the energy is being burned at the rear end of the >rocket to produce the acceleration... see the flames... On the way down, you >have to decelerate that same amount of acceleration in the opposite direction >and remove all that LAUNCH energy, to come back down hence the flames. > > No the flames are from friction with the atmosphere. if they had enough fuel they could do a 8 minute burn, and come straight down. The "Fuel" in this case is Gravity. The fuel on the way up is used to over come gravity. >The difference is that going up, you are going slowly in the higher density >atmosphere which is continually lessening as you go up letting you go faster >and faster with less and less friction. THus, no multiplying build up of >friction. > > But see where are the numbers to verify this? People make this statement all the time. but have yet to show any data that verifies this. Why is this soo hard to verify? >Coming down, everything is against you. As you come down, into denser and >denser atmosphere, the friction is increasing and increasing, the temperature >building and building you are going slower and slower and falling faster and >faster. Into one ultimate fireball. > > Yes and no, you are in free fall the whole time you are in orbit. > > >>we can go from zero to 17580 in ten min >>on the way up with no fireball, but take >>a slower, 450% slower return rate and it >>almost fries to a crisp. >> >> > >Thats why I'm thinking there might be a way to change your drag coefficient as >you come down to reduce the crescendo build up of heat and spread out the >descent. But still, for something as small as a cubesat you still have to >disipate about 300KWH of energy and even if you do this over an hour, thats >still 300 killowatts of heat... (a number they used here in the presentation.. >I'd like to see confirmation)... > > I'd like to see any data of speed vs altitude.. Joe >Still seems like a fireball.. > >Bob, WB4APR > > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: New Cubesat - the Ultimate Fox Hunt
I'm crunching numbers right now, but just thought of something ICBM's If we were to nuke RUSSIA or visa versa, while these yes do not get to orbit, they do get to just shy of orbital velocity, and re enter the atmosphere, did they have all these elaborate heat shields? Alan VE4YZ wrote: >Joe and the group... Here is 25 year old data of STS5 > >http://www.habitablezone.com/columbia/Archive/Dryden/Documents/H-1254_Therma >lResponseShuttleWingReentryHeading.pdf > >Go to page 7 of the PDF and see graph and you can take off altitude, >velocity over time. > >Google is a wonderful thing. Google "reentry velocity altitude shuttle" > > > > > > > >But see where are the numbers to verify this? People make this statement all >the time. but have yet to show any data that verifies this. Why is this >soo hard to verify? > >...Stuff deleted... > > >I'd like to see any data of speed vs altitude.. > >Joe > > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.406 / Virus Database: 270.13.49/2293 - Release Date: 08/09/09 >18:10:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: ISS future?
Really! I'd like to see where in the states solar panels are being made? Other than some new technologies that have just started up, 90% or more and I'm thinking 90% is way LOW anyway panels are made in Japan or China right now. Joe WB9SBD Nigel Gunn G8IFF/W8IFF wrote: >I think you are somewhat misguided if you believe that the US is the only >country with satallite communications systems >or solar voltaic panel production facilities. > >Rocky Jones wrote: > Most if not all of the major support hardware > > >>(solar arrays etc) are US built and maintained..without US involvement >>the TDRSS system disappears for instance..The "bucks" required to >>maintain the station are enormous... >> >> >> > > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.409 / Virus Database: 270.13.61/2313 - Release Date: 08/19/09 >06:03:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: MFJ/Cushcraft
I've been an Amateur for since 1975 and cushcraft serves their purpose, they are the Walmart or Mc Donalds of the antenna world. Joe WB9SBD Scott Richardson wrote: >>The list of "problems" goes on. >> >> > >FWIW the only Cushcraft item I ever purchased was built on the "MFJ model." >It wasn't till after a rig went up in smoke that I discovered that only one >half of the driven element was connected inside the factory-assembled feed >housing. From my unfortunate perspective, the Cushcraft move to MFJ seems >appropriate. > >Scott N1AIA > >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.409 / Virus Database: 270.13.65/2322 - Release Date: 08/23/09 >18:03:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: High LEO for cubesat?
Morning Bob, This water fuel sounds interesting. I know you can seperate water into it's components with electricity as you say. common . But when water either Boils, evaporates, or in the case of a vacuum, again a somewhat different "Boil" and turns gaseous, is it still H2O or has it broke down into it's components also? Joe Robert Bruninga wrote: >>Much of the debate on the board here arises >>from our common desire to see the launching >>of satellites with a larger footprint. >> >> > >For what it is worth, this semester I will finally get a student >to work on the 40 year old AMSAT idea of a water rocket. (Carry >water to orbit and use solar power to electrolizie the wate to >H2 and O2 and then burn those in a thruster to raise the orbit >of a cubesat. > >Mostly the goal is to get from the very low (short lived) LEO to >a higher LEO to get longer life, but it will be fun to get this >project going again. I had a working model about a dozen years >ago, but it eventually blew up.. Now we will get another one >built probably... > >Bob > >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.409 / Virus Database: 270.13.65/2323 - Release Date: 08/24/09 >06:05:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Geosyro orbit.
Hi All, I have a couple of questions, How big is the earth from a geosyncronous (sp?) orbit. Like the Moon from Earth is roughly 1/2 a degree. What is the earth from a geo orbit? anyone know? Joe WB9SBD ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Geosyro orbit.
Thanks all that answered. Reason asking is as many of you already know on Dish Network TV, they have this channel called Dish Earth, Basically it's a nice color camera looking back at the earth. it's full screen in size so I guess about a 20 degree field of view. Part that is cool is to check it as the day goes by watching the phase of the earth change as the sun changes position. And now thatwe are getting close to equinox the sun actually passes behind the earth at about 2:30 AM. I taped it last nigh to see what happens as it passes behind, pretty cool looks almost like the last phases of a total solar eclipse with a diamond ring effect etc. And you can see just as it passes behind the gain on the camera opens wide open and lits of i'm assuming digital noise appears. or if not noise I'm thinking damaged pixles for they never change position. But the bending of the sunlight is cool too the earth remains as a thin line around the horizion, way cool, and amazing how stable the orbit seems to be. if there is any wobble due to an elliptical orbit I can't see it, it must be extremely small. Too bad we cant convince these geo bird people to share some of their power, imagine how wide of a linear transponder we could have for the same power this one camera thats running 24/7 has to consume. YIKES! Joe WB9SBD Ken Ernandes wrote: >The Earth is approximately 17.4-deg in diameter (8.7-deg radius) from >Geosynchronous Earth Orbit (GEO). > >73, Ken N2WWD > > > > >-Original Message- > > >>From: Joe >>Sent: Sep 15, 2009 12:07 PM >>To: BB >>Subject: [amsat-bb] Geosyro orbit. >> >>Hi All, >> >>I have a couple of questions, How big is the earth from a geosyncronous >>(sp?) orbit. >> >>Like the Moon from Earth is roughly 1/2 a degree. >> >>What is the earth from a geo orbit? anyone know? >> >>Joe WB9SBD >>___ >>Sent via amsat...@amsat.org. Opinions expressed are those of the author. >>Not an AMSAT-NA member? Join now to support the amateur satellite program! >>Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb >> >> > >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.412 / Virus Database: 270.13.99/2372 - Release Date: 09/15/09 >05:59:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: RS series mode A downlink power
Mine was on Oscar 6 & 7, mode A Drake TR-4 and quad loop laid horizontally for recv. Transmit was a 4 ele cushcraft fox hunt beam, and a rock bound FM two meter tranny with dev and mic gains turned fully down, and we straight keyed the PTT. and amazingly it was pretty clean just a barely detectable chirp, but heard lots worse chirpers in those days on HF. so felt pretty good. Workked in less than a year like 28 states with the 10 wayy FM rig running cw. Joe WB9SBD John W Lee wrote: >RS 10/11 worked out real good for me. >I was doing a lot of travelling in 1987-90, >and was able to make a lot of mobile QSO's >using an IC-230 (10 watts on CW) with one frequency >in the middle of the passband, quarter wave antenna on >the uplink, and receiving on an FT-301 with Hustler >10-meter mobile antenna. Amazing ! > >I was keying the PTT through the accessory jack and >a Vibroplex bug ! And the CW sounded good, too ! > >73 >JOhn K6YK > >- Forwarded message -- >From: Tony Langdon >To: amsat-bb@amsat.org >Date: Thu, 17 Sep 2009 12:33:53 +1000 >Subject: [amsat-bb] Re: RS series mode A downlink power >Message-ID: <4ab1a01c.0707d00a.1bd3.7...@mx.google.com> >References: <4ab197fa.8050...@mindspring.com> ><4ab19ba2.3070...@bristor-assoc.com> > >At 12:14 PM 9/17/2009, you wrote: > > >>As per the Satellite Experimenter's Handbook 2nd edition: >> >>Power output: 5 watts for RS10/11 >>Power output : 8 watts PEP for RS-12/13 >> >> > >Interesting, I had better results on RS10 than RS12/13. Was RS10's >uplink more sensitive? > >73 de VK3JED / VK3IRL >http://vkradio.com > >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite >program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > >$5,000 a Week For Life >Publishers Clearing House winner annouced on NBC. Enter now. >http://thirdpartyoffers.juno.com/TGL2141/c?cp=QfbBFEUXayxk0mzPpJ34ngAAJ1CmZcBa4CCYwgQDaZ1FJwo1AAQFAArXIzwACQGZAA== >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.412 / Virus Database: 270.13.102/2377 - Release Date: 09/16/09 >17:49:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Arrow antenna reconfiguration results - UPDATE
as in the texts below, there is something else going on here. That Diplexor can not be all that bad. two reasons. How many db down is the front to side of that antenna? and I can not imaging someone would sell a diplexor that has greater than 20 db of losses. because of the statement that how criticalpolarity was with the original, and now the antenna has to be nearly 90 degrees cross polarized to make it drop out uhh that close to 30 db, at least 20,, something else is going on here Gary "Joe" Mayfield wrote: >> >>Another issue I came across was how wide the beamwidth is of the Arrow >>Antenna between the Arrow diplexer and the new diplexer. I was wondering >> >> >if > > >>this was going to happen and it did. The reason that this happened was >> >> >with > > >>the old diplexer, the signal attenuated so much that you had to be pointed >>right smack dab on the bird, a few degrees off and you lost the signal. >>Now, with the new diplexer, you can point the beam in the general >> >> >direction > > >>and still copy the bird. In most cases I had to turn the beam 90 degrees >>before I completely lost the downlink! Twisting the antenna to make >>polarization changes makes absolutely no difference now. This also >>attributes to the fact that now I'm copying the entire pass without >> >> >dropouts > > >>or fades. Makes sense. What I've regained over the lossy diplexer makes >> >> >up > > >>for any polarization differences, etc. for a better copiable signal. >> >>Next weekend I will have to try more passes and get a feel of how much >> >> >this > > >>system has changed. >> >> >>73, >> >>Jeff WB3JFS >>Las Vegas, NV >>DM26 >> >> >> >> >> >> >>___ >>Sent via amsat...@amsat.org. Opinions expressed are those of the author. >>Not an AMSAT-NA member? Join now to support the amateur satellite program! >>Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb >> >> >> > >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.416 / Virus Database: 270.13.113/2395 - Release Date: 09/25/09 >17:52:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: AO-7 help
AMEN! Finally someone on this board, that also remembers what the big knob on the face of the radio is used for. Maybe it's a age thing of when you got into the hobby? Like when I got into this hobby when Novices were only allowed crystal control. It wasn't all that different from using the birds. You listened to your transmit freq. to see if it was clear. and threw out a CQ. THEN YOU TUNED THE VFO and I mean a LOT like up and down the whole band looking to hear your call. almost everyone was not by choice operated split back then. You could only afford so many crystals. I remember many times CQing on my 1 crystal for 40 meters 7.109 and find someone calling me at 7.127 or whatever freq. they happened to own. You had to listen to not only your own transmit freq. in case a general or someone with a VFO called you on freq., or if nothing heard started tuning around looking for someone off freq. It was not un common to call CQ then tune for a minute or so looking. and everyone knew this so if you were answering a CQ but way off freq. you made a long call like maybe up to a minute even to give the guy a chance to find you calling him. It just drives me insane to hear people complaining about a little doppler, turn the big knob DUH! Joe WB9SBD Glen Zook wrote: >I haven't used AO-7 for some time (need to revise my antennas to do so again). > But, back in the "goode olde dayes" (when the satellite first went into >orbit) we didn't have any problems with Doppler. The accepted method was to >leave the transmit frequency alone and keep one hand on the receiver to >compensate for the frequency shift and send CW with the other hand (or hold >the microphone for SSB). No one even thought of compensating for Doppler any >other way. > >Of course at the time everyone used a separate receiver and transmitter (no >transceivers) so you could keep the receiver active while transmitting. There >were hundreds of QSOs made on each orbit and everyone had a "ball". > >Glen, K9STH >AMSAT 239 / LM 463 > >Website: http://k9sth.com > > >--- On Sat, 9/26/09, Andrew Glasbrenner wrote: > >Those splits are only right when Doppler is zero. Other wise, you have around >+/-7 khz shift to deal with. It's really tough to work AO-7 half-duplex with >no Doppler tuning. REALLY tough. If you have a PC nearby, I'd recommend trying >to use SatPC32 to control the Doppler shift during the pass. CAT cables are >pretty cheap on Ebay, and really easy to set up with the 897. > >Also, since you are using gain antennas AND are half duplex, you should make >sure you keep the power output low, like 5 watts or so, since you can't hear >if you our overdriving the uplink and making the satellite FM for everyone. > > > >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.416 / Virus Database: 270.13.113/2396 - Release Date: 09/26/09 >05:51:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: AO-7 help
Not Hard Just Skill, Just like my other post about operating as a Novice in the days of only crystal control. You did not operate full duplex on 40 meters, yet we operated contests on one transmit freq and listened to the whole band for someone calling us. We all have just gotten incredibly lazy. Joe WB9SBD Andrew Glasbrenner wrote: >Glen Zook wrote: > > >>I haven't used AO-7 for some time (need to revise my antennas to do so >>again). But, back in the "goode olde dayes" (when the satellite first went >>into orbit) we didn't have any problems with Doppler. The accepted method >>was to leave the transmit frequency alone and keep one hand on the receiver >>to compensate for the frequency shift and send CW with the other hand (or >>hold the microphone for SSB). No one even thought of compensating for >>Doppler any other way. >> >>Of course at the time everyone used a separate receiver and transmitter (no >>transceivers) so you could keep the receiver active while transmitting. >>There were hundreds of QSOs made on each orbit and everyone had a "ball". >> >>Glen, K9STH >>AMSAT 239 / LM 463 >> >>Website: http://k9sth.com >> >> >> >The half-duplex part is what makes it hard. I ran from 1992 until about >2006 without computer tuning, although I followed the current AMSAT >protocol of tuning the higher of the two frequencies. You don't drift >into others as much that way. I've tried this all ways, and if you are >going to run half-duplex, life is much easier with CAT tuning. > >73, Drew KO4MA >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.416 / Virus Database: 270.13.113/2396 - Release Date: 09/26/09 >05:51:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Arrow antenna reconfiguration results - UPDATE
No, Cross polarization in the real world is 20 to 30 db loss. In the theoretical world it's infinite, http://www.amsat.org/amsat/archive/amsat-bb/200101/msg01220.html Joe WB9SBD Jeff Yanko wrote: > Hi Joe and all, > > I doubt if the Arrow diplexer has 20dB of loss. If it did, we'd never > receive a signal! :) > > I believe somebody here on the -bb will be performing a test on the > Arrow diplexer using a vector/network analyzer. It will be > interesting to say the least. There were preliminary reports saying > the device had a loss anywhere from 2.65 to 2.80dB. That's close > enough to 3dB which is technically half power loss. Add the loss of a > short piece of coax and it will certainly be pushed over the 3dB line. > > If I recall correctly, cross polarity is also a 3dB loss. I have > noticed that when I rotate the antenna I might get a stronger downlink > but I never lose it when I rotate it back. Before, when I would do > that it would drop once I rotated in either direction from the peak > signal. Basically what is going on is the lossy device is removed and > replaced with a more efficient one, that extra net gain you just > boosted now shows how the system on the antenna side of the diplexer > is truly performing. > > I don't have an antenna analysis program to perform a test, but what > does a 7 element 440 yagi pattern look like and what is its overall gain? > > What we need to do is break down the antenna configuration into 3 > segments, see what their losses and gains are then combine them for > the overall figure. The 3 segment would be the antenna, the diplexer > and the coax. Each one will be tested individually to give an accurate > number for each. > > > 73, > > > Jeff WB3JFS > - Original Message - From: "Joe" > To: "Gary "Joe" Mayfield" > Cc: "'AMSAT-BB'" > Sent: Friday, September 25, 2009 6:42 PM > Subject: [amsat-bb] Re: Arrow antenna reconfiguration results - UPDATE > > >> as in the texts below, there is something else going on here. >> >> That Diplexor can not be all that bad. two reasons. >> >> How many db down is the front to side of that antenna? >> >> and I can not imaging someone would sell a diplexor that has greater >> than 20 db of losses. >> >> because of the statement that how criticalpolarity was with the >> original, and now the antenna has to be nearly 90 degrees cross >> polarized to make it drop out uhh >> >> that close to 30 db, >> >> at least 20,, >> >> something else is going on here >> >> Gary "Joe" Mayfield wrote: >> >>>> >>>> Another issue I came across was how wide the beamwidth is of the Arrow >>>> Antenna between the Arrow diplexer and the new diplexer. I was >>>> wondering >>>> >>>> >>> if >>> >>> >>>> this was going to happen and it did. The reason that this happened >>>> was >>>> >>>> >>> with >>> >>> >>>> the old diplexer, the signal attenuated so much that you had to be >>>> pointed >>>> right smack dab on the bird, a few degrees off and you lost the >>>> signal. >>>> Now, with the new diplexer, you can point the beam in the general >>>> >>>> >>> direction >>> >>> >>>> and still copy the bird. In most cases I had to turn the beam 90 >>>> degrees >>>> before I completely lost the downlink! Twisting the antenna to make >>>> polarization changes makes absolutely no difference now. This also >>>> attributes to the fact that now I'm copying the entire pass without >>>> >>>> >>> dropouts >>> >>> >>>> or fades. Makes sense. What I've regained over the lossy diplexer >>>> makes >>>> >>>> >>> up >>> >>> >>>> for any polarization differences, etc. for a better copiable signal. >>>> >>>> Next weekend I will have to try more passes and get a feel of how much >>>> >>>> >>> this >>> >>> >>>> system has changed. >>>> >>>> >>>> 73, >>>> >>>> Jeff WB3JFS >>>> Las Vegas, NV >>>> DM26 >>>> >>>> >>>> >>>> >>>> >>>> >>>> _
[amsat-bb] Re: Wanted: simple ISS tracking page
Heavans Above? Andrew Rich wrote: >I am looking for a simple tracking display for my sat_status site > >Ideas ? > >I see a few but they are surrounded by goobly goop > > >-- >Andrew Rich >Airways Technical Officer Grade 4 >Surveillance - RADAR ADS-B >Amateur Radio Callsign VK4TEC >email: vk4...@tech-software.net >web: www.tech-software.net >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.416 / Virus Database: 270.13.113/2397 - Release Date: 09/26/09 >17:51:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Launch coverage!
Yeah that was neat I was watching it in the middle of the night the other night, and was funny to watch the lion that was hanging, some russian traditon. they said. But was funny to see it hanging straight down pre launch and all during the power phase. then after engine cut off, it started floarting all around the cabin. I was also amazed to see them using tools to adjust controls, kinda like remote gripper things. Joe WB9SBD David - KG4ZLB wrote: >I was intrigued yesterday to see in capsule footage of the launch of the >Soyuz (with the "Space Clown") from Russia! > >Does anyone know if NASA plans to broadcast footage from inside the >Shuttle, maybe a split screen showing the traditional launch and the >other side showing the crew during lift off? > >Thanks > > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.420 / Virus Database: 270.14.1/2407 - Release Date: 10/01/09 >06:34:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Portable Tracking
Thanks for all the comments. Looks like the cheap way to go is an old Palm and the high end would be the a Netbook of some type or iphone. Most recommended software was PocketSat, Sat Me and the apps for the smart phones. Having neither of the above mentioned, I will stay on the cheap and pick up a color Palm at the Melbourne hamfest this weekend and give PocketSat a try, or maybe look at my local pawn shop here. Thanks All, Joe KI4TZ joe barkley wrote: > Hi All, > I am looking for opinions and idea on a PDA or device and software or > application I can take with me to show the satellite pass predictions > when I travel. > Thanks > Joe > KI4TZ > ___ > Sent via amsat...@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: SatPC32 Not Tuning
Hi Joel, I had to play with the baud rates to get it tracking. Still have a couple issues but it does fine. Try lowering the rates on the com port and match it with that in the program and see what you get. Joe KI4TZ Joel Black wrote: > I am trying to get SatPC32 v12.8 to automatically tune my FT847. When > the program first comes up, the radio is initialized as indicated by > the "CAT" display and when I click on a satellite, the radio tunes to > the correct satellite. That's where it stops; it no longer changes > the frequency of the radio. If I turn off and turn back on CAT > control, it will update once and will then quit again. I have the > same problem with my FT-857. > > I have read the help and .SQF files, but I cannot seem to find the > right combination. I have changed the baud rate of the radio and the > program to 4800, 9600, and 57.6k and made the corresponding changes > with the CAT delay value as recommended by the manual. I have not yet > tried uninstalling and re-installing the app. > > I am running Vista 32bit and using a USB-to-serial converter which > works with everything else. The same converter works with the HRD 5.0 > Satellite Tracker. Problem is, I cannot get HRD to accept sub-audible > tones so I can work AO-51. I don't know if it's a limitation of the > program or cockpit error. > > Any suggestions, known issues, or anyone else having the same problem(s)? > > Thanks, > Joel, W4JBB > > > > No virus found in this outgoing message. > Checked by AVG - www.avg.com > Version: 8.5.420 / Virus Database: 270.14.4/2416 - Release Date: 10/05/09 > 18:23:00 > > > > ___ > Sent via amsat...@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Satpc and LVB tracker
Problem self solved. Changed com ports and all is FB now. Joe KI4TZ joe barkley wrote: > Hi All, > > I cannot seem to get the LVB working with SAT PC. > I have followed all of the suggestion from Erich and > just wondered if anyone else had the same setup and > had any additional tips maybe, > Thanks > Joe > KI4TZ > ___ > Sent via amsat...@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Radio Amateurs supporting a mission in space (video)
Very Nice Video Henk. It was fun and interesting to have participated in supplying data. I will forward this along to a few who wonder what all this aluminum if for in my field. 73, Joe KI4TZ Henk, PA3GUO wrote: > Dear all, > > Very often I find it difficult to explain to 'outsiders' what HAM radio is > all about. > > Therefore I have released a short video on YouTube about the recent ANDE-2 > experiments and how radio amateurs world-wide contributed to this mission. > > When I was young I watched the first Space Shuttle flight on TV. A far away, > fantastic scientific event. Many years later we as radio amateurs are given > opportunities to engage directly in space-experiments. It's a thrill ! > > Featured in the video are the launch and deploy from STS-127, as well as > reception and decoding of the satellite's radio signals received from space. > > http://www.youtube.com/watch?v=WGvRnqII0j8 > For highest quality ensure you enable HD (it does slow-down the download a > bit though) > > Best regards, > Henk, PA3GUO > > > > ___ > Sent via amsat...@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: KLM 2M-14C...waterproof the polarity switch?
if i remember correctly isn't KLM the predisessor (sp?) of M squared? w6...@comcast.net wrote: >David the one I got the previous owner just put RVT all over it, except the >RCA jack. I need to redo it, but it's raining, hi. The 435 yagi came with an >aluminum box enclosurewonder why they didnt do the vhf yagi the same ?? >Course we'll never know as they are out of business. > >John > >- Original Message - >From: "David Wing" >To: amsat-bb@amsat.org >Sent: Tuesday, October 13, 2009 12:37:45 PM GMT -08:00 US/Canada Pacific >Subject: [amsat-bb] KLM 2M-14C...waterproof the polarity switch? > >Anyone out there with KLM antennas with the polarity switch care to comment >on whether you have put a housing on the switch to protect it from the >elements? It looks like the relay has silicon around the base but it just >grates me the wrong way to have a circuit board with a power connection and >components exposed to the elements. > > > >Maybe it has not been an issue but I'd care to hear of anyone experiences. >If anyone has built up a housing and have pictures or directions, please >pass them along > > > >73, > >David > >K6CDW > > > > > >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.421 / Virus Database: 270.14.14/2433 - Release Date: 10/13/09 >13:25:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: THE DMSP launch
Maybe AMSAT should make a PIO? Robert Bruninga wrote: >Rocky, > >I think you miss the point... > > > >>>4. Ballast does not have an e-mail group >>>full of whining little people who think >>>they could have designed it better or... >>> >>> > > > >>this is the one I always find amusing. >>Almost comical and certainly childish. >> >> > >Yes, I think he was referring to you and your incessant >fruitless posts... > > > >>Are the people who are suppose to be the >>experts in building state of the art satellites >>so thin skinned that a bulletin board >>slows their progress? LOL >> >> > >Yes, they probably are... On the one hand, small mind kibitzers >lambast all the "dooers" in the AMSAT organization for not >maintaining a presence here and responding to every little bite >and jab and complaint, while you then want to lambast them for >trying to respond to your childish and uninformed incessant >opinions... > > > >>"Just say no" either stop building satellites >>and move on to something that wont be at all >>critical...or just tune out and stop reading. >> >> > >In fact some of them have. And I don't blame them one bit. The >damage done by so many trolls and kibitzers such as yourself is >real and hurts the organization. > > > >>It is the childhood equivalent of "he called me a name" >> >> > >Yes, he did, and it seems he was talking directly to you. >As am I. > > > >>LOL >>things are hard >>Robert WB5MZO >> >> > >And you are the one that really makes them that way. > >Bob > >___ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.421 / Virus Database: 270.14.21/2445 - Release Date: 10/19/09 >06:40:00 > > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Test Schedule SO-67
What day is this for and I assume it is UTC. Thanks Joe KI4TZ Chris Bloy wrote: > Posted: > > > > 11:30 - 11:41 (Japan) > 12:47 - 13:01 (Australia) > 15:06 - 15:20 (Canada / USA) > 16:43 - 16:55 (Canada / USA) > 19:05 - 19:18 (RSA) > > The CTCSS tone for the transponder is 233.6 Hz. > > Uplink: 145.875MHz > Downlink: 435.345MHz > > Additional recommendations: > Use only narrow FM > Switch off compression > Speak softly (mic gain down) > > Satellite characteristics: > All antennas are linear vertically polarized (1/4 wavelength) > Sat Tx power = 5W > Sat Rx sensitivity = -116.5dBm for 12dB SINAD > Max antenna gain = 4dBi > > > > Thanks, > > > Chris - M0DQO > > ___ > Sent via amsat...@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: New Ham antenna to be installed on the ISS Columbusmodule tomorrow
Pretty cool stuff. Probably the most expensive dual bander ever installed. Neat watching it also. They are routing the coax now. Joe KI4TZ Graham Shirville wrote: > Hi All,. > > > Just so you don't miss the excitement - it is actually about to take place - > the EVA-2 will commence today Saturday at 1338UTC! > > Already we have seen shots of the "earth facing - underside" of the Columbus > module where the two L/S ARISS band antennas that were installed before > launch are quite clearly visible. > > best 73 > > Graham G3VZV > > > - Original Message - > From: "Louis McFadin" > To: > Sent: Saturday, November 21, 2009 1:42 AM > Subject: [amsat-bb] New Ham antenna to be installed on the ISS > Columbusmodule tomorrow > > > >> There hasn't been much said on the various news outlets about the >> second ISS EVA tomorrow morning at 07:30 AM EST 12:30 UTC. During that >> EVA the first task is to install two antennas on the Columbus Module. >> One is for an experiment for the European Space Agency and the other >> is a dual band 2m/70CM antenna for ARISS (Amateur Radio on ISS) very >> similar to the antennas already on the Russian service module. >> If you have any way to watch, I am sure it will be exciting for any >> ham to watch. >> This is an example of what can be achieved by volunteer hams working >> closely with a space agency. >> This antenna project was funded entirely by AMSAT-NA and volunteers >> who built the antennas for both the experiment and for ARISS. >> That's not to take away from the tremendous contribution from ESA for >> the experiment, the launch and the EVA. I have no idea what that cost >> but you can be assured it was a lot more than the cost of the antennas. >> >> Once the antennas are in place we will be working to bring amateur >> radio to the Columbus module. >> >> I am very proud of all the teamwork and effort that has gone into this >> project. >> >> >> Lou McFadin >> W5DID >> ARISS US Hardware manager >> >> >> ___ >> Sent via amsat...@amsat.org. Opinions expressed are those of the author. >> Not an AMSAT-NA member? Join now to support the amateur satellite program! >> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb >> > > ___ > Sent via amsat...@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Recorder battery died - anyone have a recording? 2/5/2011
Now in My MIND this was not a valid QSO,, the information was NOT all done on the radio, never mind he had the call wrong. BUT even if he did work WP3T, he did not know he did it it took YOU and YOUR station to let him know it. so even if the call he thought he copied was right I would never ever think this as being a valid qso. now if the tape he made had worked fine and he later determined that he copied the call wrong it still even then is not a valid qso. even if he had the call right is a grey area to me that it was a valid qso. Joe WB9SBD The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 2/6/2011 1:09 PM, Rick - WA4NVM wrote: > Mike, > > I jumped on that one to quick. I just listened to my recording and you > worked > WP3PZ. > > Sorry about the error, > Rick > > > >> Hello to the group - >> >> My recorder battery died during a pass of AO-51 yesterday (2/5/2011) I >> think >> the pass was approximately 18:53 UTC - it was a mainly east coast pass. I >> made a contact with WP3T, I believe, which is why I rely so much on my >> recorder. Many of you know how bad I mess up calls so I may have the >> suffix >> of the call incorrect. I just failed to notice the battery was running >> low. If anyone may be able to help me out I would appreciate it... >> >> Thanks in advance and I hope everyone enjoys the 10 hours of Super Bowl >> Pre-Game... >> >> 73's, >> >> Michael, K4MOA >> ___ >> Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. >> Not an AMSAT-NA member? Join now to support the amateur satellite program! >> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb >> > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Recorder battery died - anyone have a recording?2/5/2011
Wow, when did using someone elses station, be a valid qso for YOUR own station? Wow, I guess I can call every person i hear off the moon but can't copy and then just ask W5UN for a recording of all my contacts so they will be good contacts. Even tho I diddn't get any calls correct at MY station, I was able to correct all my mistakes by using a recording from HIS station, yeah that sounds valid for sure. I do not have any problems with recording your qso nd after the pass fill in the gaps with stuff ya forgot. or I'll even give ya a stretch stuff ya missed. But when it involves a third partys station then it is NOT a valid QSO. Joe WB9SBD Joe On 2/6/2011 4:51 PM, Zachary Beougher wrote: > Hi Ed and Nigel, > > I agree this is reasonable as well. I don’t see an issue with using someone > else's recordings because your batteries died, as long as you heard the QSO, > repeated the other station's call back, etc., as I said in my original > email. If you aren't for sure if the station came back to your call or if > he confirmed he heard you because you lost the bird or went behind a tree, > then that's a different story. > > I also think it's good to have a little grace - we can't expect a > first-timer to the sats to jump on and copy and repeat all call signs 100%. > When I first started, all I said was a "QSL," or "copy that." I imagine I > frustrated a few ops who were wondering who I was QSLing. ;-) > > 73, > > Zack > KD8KSN > > -Original Message- > From: Edward R. Cole > Sent: Sunday, February 06, 2011 5:24 PM > To: Nigel Gunn G8IFF/W8IFF ; amsat-bb@amsat.org > Subject: [amsat-bb] Re: Recorder battery died - anyone have a > recording?2/5/2011 > > At 01:14 PM 2/6/2011, Nigel Gunn G8IFF/W8IFF wrote: >> I don't think the issue is whether or not you use a recorder, >> packet/psk31/rtty ops are not penalised because they have >> a computer record of the contact by virtue of the technology used >> for that mode. If a voice recorder is part of your >> shack, that's fine. >> >> The issue is having to ask others if they heard your QSO and can >> tell you the details. >> If you chose technology to help you, fine. If your technology fails, >> so does the QSO. It's not acceptable to expect the >> rest of the world to be your log keeper. > I agree with this! > > > > > 73, Ed - KL7UW, WD2XSH/45 > == > BP40IQ 500 KHz - 10-GHz www.kl7uw.com > EME: 144-1.4kw*, 432-100w*, 1296-testing*, 3400-winter? > DUBUS Magazine USA Rep dubus...@hotmail.com > == > *temp not in service > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Recorder battery died - anyone have a recording?2/5/2011
On 2/6/2011 8:10 PM, Zachary Beougher wrote: > Hi, > >> Neither Nigel or I said that. > Sorry I didn't clarify - I was referring to your opinion on the use of > recorders in general. > > What has me a little confused right now is why some DO NOT think it is okay > to use someone else's recording. Simple, BECAUSE YOUR HELLO? YOUR STATION did not make the qso simple and period. a third station made the recieving part of the qso not YOURS how can that be any clearer? > In the case of a recorder failing because > of dead batteries, you can't blame that on the op - his recorder died. Yes I can he did not install fresh ones. Thats as valid as if his reciever died in the middle of the qso and then got the tape from a third station to get the information, he DID NOT finish the qso on HIS ststion!! geez.. A qso for verification is between two stations not three 4, 10, whatever. If I was the ARRL or AmSAT or any award giving out org. and I knew this station claimed credit in this way he'd be banned from all awards for life. > There is nothing wrong with WHAT recording he uses. Why does K8YSE post all > those recordings to his website? So you can hear what signals sound like? I dunno for sure. But if they are being used > I understand what everyone says about not > using someone else's recording because your receiving was bad, you went > behind > the tree or house, or something else that is dependent upon the operators > station, and I agree. But a recorder going dead is no one's fault - its > dead. Find another recording if possible and log it. I wouldn't consider > using someone else's recording as they are logging it for you. But see thats the limitations of his station, in your thinking then we have a Low pass happening, the sat is about to set, you get your sig to him but it sets just as he is sending it to you. In your theroy all he needs to do is get the recording and see what his sig report was? ya got to be kidding!!! > I respect all of the opinions here - different opinions and ideas help > develop the hobby. We need to keep in mind this is a HOBBY - hobbies are > supposed to be enjoyable. There are definitely rules and regs that must be > followed, but I don’t think it's worthwhile to get caught up in WHOSE > recording you use, what antenna you use, how you say your call sign, etc., > etc. Let's just enjoy the hobby! But see that is a rule for a QSO between you and the other station,, no other stations involved. > With that I am going to sign with you all on this discussion. > > 73! > > Zack > KD8KSN > > -Original Message- > From: Edward R. Cole > Sent: Sunday, February 06, 2011 7:06 PM > To: Zachary Beougher ; Nigel Gunn G8IFF/W8IFF ; amsat-bb@amsat.org > Subject: Re: [amsat-bb] Re: Recorder battery died - anyone have a > recording?2/5/2011 > > Zack, > > Neither Nigel or I said that. Burden of proof of > contact lies with the stations making the > contact. Use of a recorder is OK (what I said), > but relying on others to log your contact is > not. The farthest one can stretch that is if the > other station in the QSO confirms that you and > they completed a contact. And that is not kosher > under eme rules (as I have pointed out). But > then is "ordinary" ham radio where the rules are more lenient. > > But for these contacts to "count" toward awards > such as WAS or DXCC, or in a contest, you must > enter your log. Asking others what they heard > would be considered cheating. If you operate > satellites for personal pleasure with no regard > to awards, standings, etc. then it matters only > to your own personal standard of operation. > > But be aware that others may not agree :-\ > > 73, Ed > > At 01:51 PM 2/6/2011, Zachary Beougher wrote: >> Hi Ed and Nigel, >> >> I agree this is reasonable as well. I don’t see an issue with using >> someone else's recordings because your batteries died, as long as you heard >> the QSO, repeated the other station's call back, etc., as I said in my >> original email. If you aren't for sure if the station came back to your >> call or if he confirmed he heard you because you lost the bird or went >> behind a tree, then that's a different story. >> >> I also think it's good to have a little grace - we can't expect a >> first-timer to the sats to jump on and copy and repeat all call signs 100%. >> When I first started, all I said was a "QSL," or "copy that." I imagine I >> frustrated a few ops who were wondering who I was QSLing. ;-) >> >> 73, >> >> Zack >> KD8KSN >> >> -Original Message- From: Edward R. Cole >> Sent: Sunday, February 06, 2011 5:24 PM >> To: Nigel Gunn G8IFF/W8IFF ; amsat-bb@amsat.org >> Subject: [amsat-bb] Re: Recorder battery died - anyone have a >> recording?2/5/2011 >> >> At 01:14 PM 2/6/2011, Nigel Gunn G8IFF/W8IFF wrote: >>> I don't think the issue is whether or not you use a recorder, >>> packet/psk31/rtty ops are not penalised because they have >>> a computer record of the co
[amsat-bb] Re: Recorder battery died - anyone have a recording? 2/5/2011
Yes I am serious Yes it is a hobby. But also there are achievement awards. That are to some not worth anything but to others they are worth a LOT, it shows their skills and effectiveness of THEIR STATION! And THEIR OPERATING ABILITIES, Not copying the information, and getting the info from a third source is cheating in the purest form. And taints the achievements the rest of us have made by making the contact with our station alone. Maybe I'm old skool on this, but to me unless you did everything yourself to make the contact, then you did not make the contact. Simple, Joe WB9SBD On 2/7/2011 2:59 PM, Jim Adams wrote: > I do not understand the tone of some of the comments on this simple > question. Banned from awards for life? Seriously? It's a HOBBY. I think some > people take this stuff way too seriously. > > To answer the original posters question, K8YSE has several recording of the > sats on his website: > > http://www.papays.com/sat/general.html > > And as a backup recorder, if you have a cell phone, it has a record or memo > option. > > Jim Adams - K0BAM > Ridgway, Colorado > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Strange Signal - 436Mhz - (sample provided)
a doppler fox hunt antenna system would get the direction also. Joe WB9SBD The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 2/8/2011 5:49 PM, Bob Bruninga wrote: >> Has anybody else heard this -- >> http://mysite.verizon.net/vzeqe0l7/Signal_436MHz.wav >> The signal strength is not constant - >> and peaks about every 10 seconds - - >> A new radar perhaps? > The 10 sec rotation rate nails it as an E6C Radar plane. Probably operating > off the East Coast. I have been hearing it periodically for years, and > getting ready for a satellite receive lab this week, it would have > completely spoiled the lab. So I spent over an hour on the web and on the > phone and finally got in touch with the right folks and when I said "10 > seconds" they didn't need any more. That nailed it to an E6. > > They are not supposed to operate on the UHF channel that overlaps the > 400-420 MHz band anywhere near land, but it is unclear what the guidance is > for the band 430-450 where HAMS ARE SECONDARY. > > The above is my understanding, might not be exact. > > To locate it would be hard... Swinging the beam doesn't help much, because > the radar is rotating at the same time and giving all kinds of fluctuations > per second... which would mask your attempts at peaking on it. > > My best guess to locate it would be to get two hams on the phone separated > by several hundred miles and to TIME the difference between the peak. That > would establish an angle from the radar between the two hams. Then both > hams compare signal strengths to an OMNI antenna (must be omni) and both > must be calibrated for equal S meter readings. The difference in peak > signal strength would get an idea of range ratio between the two stations. > That and the angle (and ignoring the mirror solution over land) would get > you a good idea where he is operating. (Maybe?) > > Bob, WB4APR > > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Mode A
It has been at least a Decade since i was on a bird. My question is with all the birds up there now. Are any operational in mode A ? Joe WB9SBD -- The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Mode A
I just went there and see a chart for reception reports, But i done see where it says what mode it is going to be in and when? Joe WB9SBD The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 2/19/2011 10:43 AM, Andrew Glasbrenner wrote: > On 2/19/2011 10:40 AM, Joe wrote: >> It has been at least a Decade since i was on a bird. >> >> My question is with all the birds up there now. >> >> Are any operational in mode A ? >> >> Joe WB9SBD > AO-7 is in Mode A every other day. Check oscar.dcarr.org for the > current mode switch pattern. It works, but it's not anywhere as strong > as say RS-10/11 or 12/13. > > 73, Drew KO4MA > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Web Page VS Orbitron
I found a web page that says it can track http://www.n2yo.com/?s=7530 and i installed a new Orbitron, and gave it the latest set of keps it wanted to do. Thing is the two things do not agree at all where Oscar 7 is at. not even close. soo how do I tell who is right other than to wait for a pass from either one and see if i hear anything. Joe WB9SBD -- The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Web Page VS Orbitron
That was it! the stoff.pl set uploaded and now they agree! Thanks! Joe WB9SBD The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 2/19/2011 1:17 PM, Zachary Beougher wrote: > Joe, > > I have found Orbitron's to be off when I download the keps from > celstrak.com. I assume you are downloading them from there - > correct? If so, try getting it from stoff.pl. I have always found > them to be right on. I have checked N2YO's tracking program out > before, and it is very dependable. If the two disagree, I would go > with N2YO. > > 73! > > Zack > KD8KSN > > -Original Message- From: Joe > Sent: Saturday, February 19, 2011 1:55 PM > To: amsat-bb@amsat.org > Subject: [amsat-bb] Web Page VS Orbitron > > I found a web page that says it can track > > http://www.n2yo.com/?s=7530 > > and i installed a new Orbitron, and gave it the latest set of keps it > wanted to do. > > Thing is the two things do not agree at all where Oscar 7 is at. not > even close. > > soo how do I tell who is right other than to wait for a pass from > either one and see if i hear anything. > > Joe WB9SBD ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Mode A
Been watching this page http://www.planetemily.com/ao7/ao7log.php And lots of Mode B activity. but at the about time it could have or as others say here should have changed to Mode A the activity has ceased. and i listened to two passes and heard nothing. is Mode A not working? Joe WB9SBD The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 2/19/2011 1:36 PM, Tom wrote: > Joe, > > As Drew mentioned, the best site for AO-7 status (IMHO) is > http://oscar.dcarr.org/. I think there was some web site confusion in > previous posts. > > Tom KØTW > >> I just went there and see a chart for reception reports, But i done see >> where it says what mode it is going to be in and when? >> >> Joe WB9SBD > > > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: AMSAT Fox News
I was waiting for this to happen. The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 3/3/2011 6:52 AM, Alan P. Biddle wrote: > Bob, > > Actually, that would be a good name, since it will be fairly balanced. It > has to be, so it won't go all wobbly on us. ;) > > Alan > WA4SCA > > > -Original Message- > From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On > Behalf Of Bob Bruninga > Sent: Wednesday, March 02, 2011 8:16 PM > To: amsat-bb@amsat.org > Subject: [amsat-bb] Re: AMSAT Fox News > >> AMSAT-Fox came out as a compromise. > OK, but please lets not call it AMSAT Fox News if we want anyone to trust > us. > > Bob > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Can SatPC32 track the moon?
Thanks for the post Drew, I did not know that either... Joe KI4TZ Andrew Glasbrenner wrote: > On 4/1/2011 9:40 PM, Bill Dzurilla wrote: > >> I've been using SatPC32 to track the ham satellites. Lately I've also been >> trying EME (moonbounce). Does anyone know if SatPC32 can track the moon as >> well as the amateur satellites? If yes, how is this done? >> >> 73, Bill NZ5N >> > There is a program in the SatPC32 folder called SuM that will do just that! > > 73, Drew KO4MA > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: ITU Phonetics - Kilo
I don't get confused, I just get so I don't care. Joe WB9SBD The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 4/10/2011 12:26 PM, Clint Bradford wrote: >>> ... "Whiskey" confuses me ... > It's usually rum in my pina coladas that confuses me ... > > Clint > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Part 97 sec97.119 B2
On 4/10/2011 1:01 PM, Glen Zook wrote: > In the world of working DX geographical names have become a defacto standard > phonetic alphabet. Is there a published List someplace of this "Official" Geographical alphabet? Joe WB9SBD ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: ITU Phonetics - Kilo
Our club at Field day WB9FDZ, was always known as Whiskey Bravo Nine Field Day Zombies. Especially at 3 am on a dead 75 meters! Joe WB9SBD W B 9 Silent But Deadly! The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 4/10/2011 5:33 PM, Bruce wrote: > King Kong Five Dream On > > just had to add my two cents worth as no one wanted to give me a penny for my > thoughts. > > 73...bruce > > Sent from my iPhone > > > > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: ArisSAT-1nothing heard 14:57 UC South Africa
How about we all wait and announce I HEARD IT ON.. IT'S LIKE EVERYONE TELLING US WE HAVEN'T HEAR OSCAR 6 TODAY. GEEEZ. Joe WB9SBD The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 4/12/2011 9:56 AM, Allan Saul wrote: > zip here. > > 73 Allan ZS1LS > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Reception Reports
Correct, But the difference is, we know that O6 is dead, but we also do not know if this new thing is alive. And until someone posts that it was heard, what actual good does 1000 posts saying I diddn't hear it help> Help is saying I heard it just now at 17:38 UTC, strong signal bla bla bla. does knowing that it wasn't heard make it be heard? Joe The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 4/12/2011 11:34 AM, Clint Bradford wrote: >>> ... IT'S LIKE EVERYONE TELLING US WE HAVEN'T HEAR OSCAR 6 TODAY. > No, you are wrong. Sorry you might have missed the news, but OSCAR 6 is now > non-operational. No one is trying to hear her. > > But ARISSat-1, on the other hand, has many countries involved in attempting > to get it up and running today. > > Clint, K6LCS > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: satellite average elevation
Need to take into account also that the main lobe of a bean even flat on the horizon the max center of the main lobe is still not also dead on the horizon but elevated some due to ground reflections. Joe WB9SBD The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 4/12/2011 1:24 PM, Bob Bruninga wrote: > X-Antispam: NO; Spamcatcher 6.1.2. Score 1 > >> As I said, in the "goode olde dayes" we used >> 30 degree up tilt and it worked well... >> Lessening the up tilt may increase the gain >> for the lower angle passes but will also decrease >> the gain on the higher angle passes. So, it is a >> "trade off" no matter what you do! > Sorry to sound like I am quibbling... but that last sentence implies the > idea of an equal "trade off". But the tradeoff is not equal at all and may > be missing the point here. > > A LEO satellite pass does not need gain at "higher angles" because the > satellite is by definition 2 or 3 times closer to the ground station (+6 to > +9dB stronger). But one does need the gain at lower angles where the > satellite is much further away. > > An up-tilt of 30 degrees is throwing away excess gain where it is not needed > (high angles) at the expense of low angles where every single dB -is- > needed. So there is no real tradeoff... A lower angle (about 15 degrees) > is more-or-less optimum for LEO's with fixed tilt and modest gain beams. > > To actually quantify the exact best angle (which will depend on the actual > beam's own beamwidth), it is simply to up-tilt the antenna no more than the > angle at which the gain on the horizon LOSES say less than 1 dB. Note, this > is not half the published "antenna beamwidth" which is usually a "3 dB" > beamwidth. It is much less than that, less than half the 1 dB beam width. > You can measure this by setting the beam no higher than the upangle that > loses less than 1 dB to a signal on the horizon > > Something like that... > Bob, WB4APR > > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: HF Satellite Experiment?
Now, a question, Is there a difference in which way the signal travels through the ionosphere be it going ground up or space craft down, does it make any difference? And or how about incendense angles? the angle the signal hit the ionosphere. if it's a grazing blow does it get reflected more vs a straight on assault like straight up and down. It can't be blocked all that much because I remember playing on that russian bird all the time Mode "K"? 15/10 meters. How about listening to Jupiter also? Joe WB9SBD The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 4/19/2011 3:05 PM, Bob Bruninga wrote: >> What is your launch date and good luck? > Launch Opportunity no earlier than March 2012. Putting us closer and closer > to the Solar Max which would be the worst time for this experiment. > > Bob, Wb4APR > > -Original Message- > From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On > Behalf Of Bob Bruninga > Sent: Tuesday, April 19, 2011 12:16 PM > To: 'John Heath' > Cc: 'Amsat' > Subject: [amsat-bb] Re: HF Satellite Experiment? > > I'm hoping for 1 Watt and on all the time. > > Bob, wbapr > > > > > > From: John Heath [mailto:g7...@btinternet.com] > Sent: Tuesday, April 19, 2011 1:14 PM > To: Bob Bruninga > Cc: Amsat > Subject: Re: [amsat-bb] HF Satellite Experiment? > > > > Hi Bob, > > > > Congratulations, sounds like an interesting experiment. > > I will be listening for the transmissions. > > Do you have estimated output power yet? > > Will the cubesat TX in eclipse, less active ionoshere. > > Will the beacon be on all the time, or intermittent. > > > > 73 John G7HIA > > > >_ > > From: Bob Bruninga > To: amsat-bb@amsat.org > Sent: Tuesday, 19 April, 2011 14:22:52 > Subject: [amsat-bb] HF Satellite Experiment? > > Cubesat HF experiment: > > > > We have revised our HF satellite experiment proposal to be a CW telemetry > beacon on 40, 20, 15 and 10 meter bands. The experiment will last only a > few days, since the deployed 1000m tether will have so much drag, we will > de-orbit in only a few days. > > > > The idea is a keyed CW oscillator on 7.010 MHz with harmonics on 14.020, > 21.030 and 28.040 MHz. These bands are all in the IARU Satelilte > allocation. We will filter all harmonics above 28 MHz. > > > > The challenge will be how to feed a 1000m long wire from only a 4"x4"x7" > counterpoise (on all bands). transformer coupling? > > > > The tether will be vertical and can act as a long wire antenna with a very > narrow cone angle pointed straight down. Antenna gain will be more than 10 > dB on all bands. This moving donut gain pattern sweeping across the earth > should pose some interesting reception reports (If any of it gets through > the ionosphere). > > > > Launch Opportunity no earlier than March 2012. Putting us closer and closer > to the Solar Max which would be the worst time for this experiment. > > > > Other than a nice AMSAT experiment, if anyone can use this for valid > ionosphereic science, come join us. > > > > Bob, WB4APR > > > > > > > > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Balloon across Atlantic 21 April?
Can we please have the location of the launch? I know it has a 2 land call sign, but now days that's meaningless. Plus the date and time. How about in UTC time for both? This announcement says, The current target for executing launch of PBH-15 is between 11:00PM -- 12:00AM on Thursday (4/21)/Friday (4/22), weather and approval permitting. But especially the midnight thing and then EDT CDTGMT, since there is no indication of launch site, 11:00 PM Where? Lets keep everything in Amateur Radio on one time zone please? UTC. aka: GMT. Joe WB9SBD The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 4/19/2011 3:22 PM, Bob Bruninga wrote: > KC2TUA announces: Balloon attempt across the Atlantic. 21 April 2011 > > Hams in the USA and worldwide are needed to listen on 7.1023 and 10.1466 MHz > and to send readings of the balloon's progress to pbh15.d...@gmail.com. More > information about the program, including the latest projected flight path, > can be found at http://www.projectbluehorizon.com/ > https://twitter.com/PBH5. > > It also has an APRS GPS tracker on 144.39 with the callsign KC2ZJH and will > launch from Oswego, NY around midnight Thursday. Thanks in advance for your > help! > > The HF downlink exact frequency will vary 10 Hz or so with temperature. > Accurate recording of frequency will be useful. > > 73, > -Tom Triebwasser > PBH Alumnus '09 > KC2TUA > > --- > > The Project Blue Horizon Increment 5 (PBH V) team has finalized a launch > window for the third and final flight of Increment 5; launch of PBH-15 is > tentatively planned for 4/21/11 -- 4/22/11. The team will be rolling out GO/ > NO-GO communications to all parties to provide adequate time for interested > individuals to plan accordingly for observing the launch or tracking and > following the mission progress. > > The PBH-15 mission will be the Increment 5 teams attempt at breaking the > current ARHAB distance (3,361.81 miles) and duration (49 hours, 45 minutes) > records. It will include integration of an altitude control mechanism for > reducing air vehicle weight during flight to sustain float and 30m HF > communications via an Enhanced Morse Decoder provided by Dylan Thorner of > Enhanced Solutions. PBH-15 will be lifted with a 54,000 cubic foot > Zero-pressure envelope and is projected to float for long durations between > 85,000-110,000. > > The current target for executing launch of PBH-15 is between 11:00PM -- > 12:00AM on Thursday (4/21)/Friday (4/22), weather and approval permitting. > > At conclusion of Thursday's Flight Readiness Review (2PM - 3PM), the team > will provide updated GO/ NO-GO information. > > During the PBH-15 mission, the Twitter feed will be updated in 30 minute > increments at: http://twitter.com/PBH5 > > -- > > For those interested in tracking the Mission Payload, the following band > plan and call signs will be used for PBH-15: > > Function > Frequency > Required > HAM Level > > Payload > Call Sign > Primary Voice / Mission Communication > 147.500MHz > Technician > > Mission Payload HF (40m) > N2XE > Secondary Voice / Mission Communication >Owego Repeater (Duplex) > 146.760MHz > Technician > > Mission Payload HF (30m) > N2XE > > > > > Mission Payload APRS > KC2ZJH > APRS > 144.390MHz > Technician > > > > 40m HF (Morse Code) > See attached > Technician > > > > 30m HF (Morse Code) > See attached > General > > > > > Users can input data received from the Mission Payload via the "User Input" > tab at http://www.projectbluehorizon.com/. > > Points received from the PBH-15 payload over HF can also be submitted to: > pbh15.d...@gmail.com > > Thanks, > > Matthew T. Lewis > > > > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Contact Page
I asked a question on the AMSAT main web site using their web page contact them page. How long does it usually take to get an answer? Joe WB9SBD -- The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: SSB Operation on the Satellites
I always varied the transmit. This way the person I'm talking to as well as any other listeners are all on the same freq listening. Growing up on the birds when you had to twist the BIG knob to keep everyone on freq is not not a big deal. And to this day i still don't know why it seems to be a problem now days. It all just takes practice. just like in field day coming up our club tries to get the non HF users to come out and try it. and at times it's incredibly painful to watch the guy that operates "Channelized" radios. IE: 2 meter FM How it will take them minutes to finally be within 500Hz of being on freq of a ssb signal. And even then most of the time they will be calling someone when it's obvious they are no where near on freq. then it's twiddling the big knob again going right past on freq spot and again try again off freq. Where a seasoned operator will tune them in in 1/2 a sec coming in from one side and stop dead on freq. it all just takes time on the air. simple. Joe WB9SBD The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 6/9/2011 7:18 AM, Nigel Gunn G8IFF/W8IFF wrote: > It's certainly the case that many people operate "out in the field" and do > not have a computer available. > My radios are not computer controlled, even in the shack. > > On 09-Jun-11 11:08, Tom Schaefer, NY4I wrote: > >> Is the state of the art still such that we are all using radios that do not >> support full doppler correction? >> > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: FW: NASA Ames Phonesat Balloon Launch
I thought per FCC rulings that cell phone use in these balloon flights is not legal? Joe WB9SBD The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 6/9/2011 8:27 AM, Bob Bruninga wrote: > APRS Balloon launch today from California Bay area! > >> On Thursday 9 June we will be doing a high-altitude balloon >> launch of our prototype Phonesat spacecraft It will have >> a separate APRS VHF beacon, but what we're really interested >> is collecting the data from the satellite's UHF beacon. >> It would be great if people can ...send us back any data >> to to mikesaf...@gmail.com > PhoneSat Details: > - Frequency: 437.092MHz AX.25 AFSK > - PhoneSat Callsign(s): KJ6KKZ (primary), K5RDY (temporarily during a > reboot) > - Twitter: http://twitter.com/#!/NASA_Phonesat, follow us for live updates! > > Balloon/APRS Details: > - Launch Time: 10-10:30AM (PDT?) (follow twitter for updates) > - Launch Location: Valverde Park (outside of Manteca) > - APRS tracking: Callsign KF7ODR-1 > > Predicted Path: > http://habhub.org/predict/#!/uuid=e4826f7ae71c69c1abac515a20d8e821b20f78bf > > Also, here is an article on their previous flight: > http://www.foxnews.com/scitech/2011/02/11/cell-phones-space-smartphone-nasa/ > > 73, > The PhoneSat team > > > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: FW: NASA Ames Phonesat Balloon Launch
Ok, Smartphone, Me Bad, I thought this was just another group using a cellphone on a balloon flight. Upon further reading I see they did take the data out of the "Phone" and downlink it via "Ham Radio" Who's call I wonder? But i guess i jumped the Gun Sorry, Joe WB9SBD The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 6/9/2011 10:46 AM, Nigel Gunn G8IFF/W8IFF wrote: > Where does it say there's a cellphone? > > On 09-Jun-11 14:24, Joe wrote: >> I thought per FCC rulings that cell phone use in these balloon flights >> is not legal? >> >> Joe WB9SBD >> >> The Original Rolling Ball Clock >> Idle Tyme >> Idle-Tyme.com >> http://www.idle-tyme.com >> >> On 6/9/2011 8:27 AM, Bob Bruninga wrote: >>> APRS Balloon launch today from California Bay area! >>> >>>> On Thursday 9 June we will be doing a high-altitude balloon >>>> launch of our prototype Phonesat spacecraft It will have >>>> a separate APRS VHF beacon, but what we're really interested >>>> is collecting the data from the satellite's UHF beacon. >>>> It would be great if people can ...send us back any data >>>> to to mikesaf...@gmail.com >>> PhoneSat Details: >>> - Frequency: 437.092MHz AX.25 AFSK >>> - PhoneSat Callsign(s): KJ6KKZ (primary), K5RDY (temporarily during a >>> reboot) >>> - Twitter: http://twitter.com/#!/NASA_Phonesat, follow us for live >>> updates! >>> >>> Balloon/APRS Details: >>> - Launch Time: 10-10:30AM (PDT?) (follow twitter for updates) >>> - Launch Location: Valverde Park (outside of Manteca) >>> - APRS tracking: Callsign KF7ODR-1 >>> >>> Predicted Path: >>> http://habhub.org/predict/#!/uuid=e4826f7ae71c69c1abac515a20d8e821b20f78bf >>> >>> >>> Also, here is an article on their previous flight: >>> http://www.foxnews.com/scitech/2011/02/11/cell-phones-space-smartphone-nasa/ >>> >>> >>> >>> 73, >>> The PhoneSat team >>> >>> >>> ___ >>> Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the >>> author. >>> Not an AMSAT-NA member? Join now to support the amateur satellite >>> program! >>> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb >>> >> ___ >> Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. >> Not an AMSAT-NA member? Join now to support the amateur satellite >> program! >> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb >> > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: SSB Operation on the Satellites
doppler effects both paths, up and down. so at least if everyone is listening to a 100Hz freq tone at 100 Hz, we are all on the same freq. Joe WB9SBD The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 6/9/2011 9:35 AM, n...@lavabit.com wrote: > OK my brain may be playing tricks, but if you vary only your transmit > frequency such that you always hear yourself on the same downlink > frequency, isn't it true that the other station may not necessarily be > hearing you on the same downlink frequency and is chasing you anyway? > Your doppler is +5kHz (for example) on the receive, the bird is just about > to pass overhead of me though so my receive ferquency goes rapidly from > +2kHz to -5kHz, your transmit tuning has no relation at all to what > frequency I am listening on. Then the bird goes past you and you suddenly > switch down 5kHz, so I have to follow you on my receive. > > Or am I nuts? (Quite possible, come see where I work and you will > understand!) > > Jerry > NØJY > >> I always varied the transmit. >> >> This way the person I'm talking to as well as any other listeners are >> all on the same freq listening. >> > > > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Field Day Dual-Hop!
I know, Possibly they do not know what is happening? (Doubt it) how to fix it? I also do not know. This is one of the main reason I hate the CB fiasco of the single channel FM birds. Especially because of the nature of the FM capture effect. The Bully with the biggest signal is the only one heard. This may make it even more CB'ish, but maybe once a station has worked someone, then everyone else starts CQing again? Yes a massive mess. I feel the ideal would be the one QSO per station during FD. As it is intended to be. Maybe have an OO monitor passes like when FD is happening and send out pink slips to all that do not abide by the one QSO policy during FD? Or what probably would be even faster than the one QSO per station, would be to run QSO's like a sprint type then each station gets 2 QSO's and are gone. Typical would be like this. CQ Field Day this is W9ABC W9ABC this is K9K9XYZ K9XYZ we are 1A Wisconsin QSL we are 5a Illinois QSL Qrz this is K9XYZ K9XYZ this is W9AAA W9AAA we are 1A Wisconsin etc. I don't know. A simple small linear transponder would be soo much nicer. And not all that hard to make either. But alas we keep putting up these FM birds. UG> Joe WB9SBD The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 6/27/2011 12:01 AM, George Henry wrote: > I actually made most of our (W9CCU) contacts on FO-29 this year, with AO-7 > and VO-52 close behind. > > REALLY disappointed at the number of stations making multiple contacts on > the FM birds... what these people don't seem to realize is that every extra > contact they make deprives another station of the opportunity to make their > one FD contact. > > George, KA3HSW > > > - Original Message - > From: "Greg D." > To:; > Sent: Sunday, June 26, 2011 2:13 PM > Subject: [amsat-bb] Re: Field Day Dual-Hop! > > >> Actually, the later (North-heading) pass of AO-51 was remarkably sane. I >> made my 100 point contact with AA5PK, and then sat back to listen. >> Towards the end of the pass it was pretty quiet, so I answered W6YX who >> was actually having to call CQ for some attention. >> >> But AO-7 literally sounds like 20 meters. I've never heard it so busy. >> The Old Girl is holding up extremely well, and I had much better luck >> there than with FO-29, which seemed to be suffering from the onslaught. >> AO-27 was super busy too, so I decided to wait for the mid-Pacific >> 3-degree pass. Almost snagged the NH7 station... Sorry, just couldn't >> pull out the call sign as the bird set. Time to buy a better preamp and >> get it mounted directly on the antenna boom (instead of 10' and a cable >> splice away). >> >> Greg KO6TH >> >> > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: FD Mess
True and isn't that actually breaking a FCC rule law also, ya know we must only run the minimum power needed to maintain the contact? being 50 DB stronger than any other signal on the bird is clearly breaking a federal law. rule. Joe WB9SBD The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 6/27/2011 10:54 AM, wa4...@comcast.net wrote: > Field Day to my understanding is to see how ops can get on the with the bare > minimum of equipment needed to make the contact.NOT to blast the out of > the bird and walk all over the little guy trying to play fair. > > - Original Message - > From: "Jeff KB2M" > To: "AMSAT" > Sent: Monday, June 27, 2011 10:35:35 AM > Subject: [amsat-bb] Re: FD Mess > > If it wasn't for the Oscar class stations making "HI POWER multi contacts" > who would help the vast majority of weak portable FD stations make their one > FD contact? Certainly not a weak station calling CQ for 5 passes! I've > never heard two OCS making contact with each other, it's always with a much > weaker station. This is the other side of the same argument heard every year > after FD. Anyway I got my contact :) > > 73 Jeff kb2m 2A SNJ > > > -Original Message- > From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On > Behalf Of wa4...@comcast.net > Sent: Monday, June 27, 2011 11:14 AM > To: AMSAT > Subject: [amsat-bb] FD Mess > > It took me 5 satellite passes before I could make 1 contact There were too > many ops making what sounded like HI POWER multi contacts .This should not > have happened. Maybe someone with good writting skills could send the ARRL > world above 50 an artical on how to work the birds during FD > WA4HFN em55 Damon > > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Satellite Contacts During Field Day
Agree, The rules state, 7.3.7.1 Stations are limited to one (1) completed QSO on any single channel FM satellite. So maybe the ARRL dhould DQ these people when they submit their logs? I hope so. Granted this doesn't stop someone operating just to make contacts and don't send in their logs for FD. But wow it would sure make my 5A group remember that rule if after doing all this work (Fun) to have it listed as a DQ because of breaking that rule that is soo clearly stated. Joe WB9SBD The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 6/27/2011 10:51 AM, Carl Rimmer W8KRF wrote: > I have a comment regarding FD satellite contacts. If I remember > correctly, it has been established that a station only make one (1) > satellite contact during the FD period so everyone can have a chance. > Making a contact or contacts on each of the available satellites during > each of their passes is improper and not according to my understanding > of the rules. > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: FD Mess
Ok, The thought there was to promote activity. OK fine, It's obvious that the FM birds do not have any sort of lack of activity. So How about for FD and the Amsat FD that the contest QSO's only count if they are made on a non FM bird? That would cure the problem of the 11 meter FM birds and promote on the less used linear birds. It is still a bird QSO but in the spirit of when it was created when none of these FM birds even existed. Joe WB9SBD The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 6/27/2011 1:13 PM, Bill Acito W1PA wrote: > I did not participate in FD this year, but I have certainly heard my share of > them in recent years. > > I think we have to let go of the mantra that “any use of the bandwidth is > good use” with respect to “encouraging more satellite activity”. Wasn’t that > the original intent of the “100 point bonus” items? To encourage specific > activities – traffic handling, promotion, emergency power, etc. > > The FM birds have fixed bandwidth -- nothing we can do. There is no > mechanism to restrict FD stations to only one QSO on any FM bird. If you read > the FD rules, you can make multiple contacts on the SSB birds, and they do > count for QSO credit beyond the 100 point bonus – you can only make one QSO > on any FM bird: > > 7.3.7. Satellite QSO: 100 bonus points for successfully completing at least > one QSO via an > amateur radio satellite during the Field Day period. "General Rules for All > ARRL Contests" (Rule > 3.7.2.), (the no-repeater QSO stipulation) is waived for satellite QSOs. > Groups are allowed one > dedicated satellite transmitter station without increasing their entry > category. Satellite QSOs also > count for regular QSO credit. Show them listed separately on the summary > sheet as a separate > "band." You do not receive an additional bonus for contacting different > satellites, though the > additional QSOs may be counted for QSO credit unless prohibited under Rule > 7.3.7.1. The QSO > must be between two Earth stations through a satellite. Available to Classes > A, B, and F. > 7.3.7.1 Stations are limited to one (1) completed QSO on any single channel > FM satellite. > > > And there is certainly no mechanism to restrict the ERP that gets used. Is > anyone really surprised it sounds like it does? > > IMHO, I think it does more harm than good in promoting this aspect of the > hobby, for a potential newbie to hear the FM birds on FD... restrict > activity to the transponder (SSB/CW) birds and be done with it – no FM > satellite QSO’s at all during FD. Or have it like the ARRL Bulletin --- RX > only; copy some valid telemetry to get points. > > Bill > W1PA > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: FD Mess
I know the ARRL says it is not a contest. but if you believe that I have a lovely swamp in Arizona to sell you. I know many clubs that it is a MAJOR contest for them and some it's the onluy one they enter in. Joe WB9SBD The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 6/27/2011 1:21 PM, Nigel Gunn wrote: > A bigger FD problem is that FD is advertised as a chance to demonstrate > your emergency comms ability to Joe Public. > FD is NOT a contest so why are points and bonuses involved at all? > > On 27/06/11 19:13, Bill Acito W1PA wrote: >> I think we have to let go of the mantra that “any use of the bandwidth is >> good use” with respect to “encouraging more satellite activity”. Wasn’t >> that the original intent of the “100 point bonus” items? To encourage >> specific activities – traffic handling, promotion, emergency power, etc. >> > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: FD Mess
Read a little further down in the rules it clearly states on the single channel FM birds ONLY ONE CONTACT Period it is very clear. Joe WB9SBD The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 6/27/2011 1:29 PM, Andreas Junge wrote: > There is no such rule in the FD that limits you to one Satellite contact. You > need AT LEAST one for the 100 bonus points: > > > From the FD rules (2011): > 7.3.7. Satellite QSO: 100 bonus points for successfully completing at least > one QSO via an amateur radio satellite during the Field Day period. "General > Rules for All ARRL Contests" (Rule 3.7.2.), (the no-repeater QSO stipulation) > is waived for satellite QSOs. Groups are allowed one dedicated satellite > transmitter station without increasing their entry category. Satellite QSOs > also count for regular QSO credit. Show them listed separately on the summary > sheet as a separate "band." You do not receive an additional bonus for > contacting different satellites, though the additional QSOs may be counted > for QSO credit unless prohibited under Rule 7.3.7.1. The QSO must be between > two Earth stations through a satellite. Available to Classes A, B, and F. > > > 73, > > Andreas, N6NU, CM87VK > > On Jun 27, 2011, at 9:51 AM, Floyd Rodgers wrote: > >> Guys, this seems simple to fix. The arrl gets the logs of everyone. How >> hard is it to build a table of the sat contacts and check who gets more >> than the allowed one contact? >> ___ >> Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. >> Not an AMSAT-NA member? Join now to support the amateur satellite program! >> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: FD Mess
some one is gonna get capped! Joe WB9SBD The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 6/27/2011 11:40 AM, Ben Napper wrote: > Uh Oh... East Coast/West Coast... FIGHT!!! :) (Just kidding) > > I managed to make my contact from the Kansas City area on the 4am pass on > SO-50 (as NX0U). Still a bit chaotic, but I did 'cheat' by leaving my > handheld plugged into external power to be a full 5w out. :) > > KC0PCQ > > On Mon, Jun 27, 2011 at 11:22 AM, Clint Bradfordwrote: > >>>> ... There were too many ops making what sounded like HI POWER multi >> contacts ... >> >> I am quite proud of how stations acted out here on the West Coast. I mean, >> we have the largest potential for problems, since we have the largest number >> of hams compared to anywhere else in the U.S. Yes, the FM birds were busy >> ... and I even could call one particular pass a little chaotic (grin) ... >> but, overall, common sense and reasonable operating techniques prevailed. >> >> Clint Bradford, K6LCS >> >> ___ >> Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. >> Not an AMSAT-NA member? Join now to support the amateur satellite program! >> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb >> > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: FD Mess
On 6/27/2011 11:17 PM, Gary "Joe" Mayfield wrote: > Is it fair he gets to make more contacts with his bigger better station? I > think I would argue it is. It is his reward for all of that effort. Did he > make it possible for stations that may not have otherwise made a contact 80 > to make a contact? Yes, he did. He was monopolizing the frequency, but it > seemed to make for a lot of contacts > > Joe kk0sd All good and true, BUT did he monopolize the whole 80 meter band so no one else could use it? NO. There is a BIG difference there. Joe WB9SBD ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: FD Mess
On 6/28/2011 12:19 AM, Art McBride wrote:
> K6YK,
> FD has always been a mess,
{snip}
> I think more operators would work the linear transponder satellites if
> better equipment was available. The stuff from the big three in Japan does
> not give the user what they need.
>
> Art,
> KC6UQH
I beg to differ here, A real bird enthusiast equipment would not be a
reason for not getting on. I became active in the mid 70's on the
Oscars of those days in Mode A.
Station?
Novice HF station, Old Drake TR-4 tranciever for the 10 meter receive.
no pre amps or nothing fed with radio shack RG-58 about 100 feet of it,
(maybe a few DB loss there?)
10 meter ant? 10 meter dipole up about 20 feet on my roof.
2 Meter Transmitter? I honestly can not remember what it was. I just
remember it was a VFO controlled AM only transciever that ran like 5
watts on AM output. We simply disconnected the Mic. and added a
straight Key to the PTT line and had a blast on the Birds. Worked like
30 to 40 sates with that set up.
So fancy state of the art equipment from Japan is Not needed.
Joe WB9SBD
> -Original Message-
> From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On
> Behalf Of k6yk
> Sent: Monday, June 27, 2011 2:02 PM
> To: gordon...@gjcp.net
> Cc: amsat-bb@amsat.org
> Subject: [amsat-bb] Re: FD Mess
>
>
> FD is a mess every year. No matter what bird(s) you try.
>
> Most of the FD stations have no clue about satellites, they just get
> the idea they need to make 1 satellite contact or as many as they can.
> They don't know about all the rules particular to AMSAT, and they
> dont' care.
>
> They ask somebody what frequency to transmit and listen on and then
> they get their 500 watt amp, big beam or no beam, no preamp, and
> start calling and calling. They don't hear anything so they just mess up
> the
> whole works. Happens every year.
>
> You either have to bear with it and make your one contact or give up.
>
> 73,
> K6YK
>
>
> On Mon, 27 Jun 2011 21:33:34 +0100 Gordon JC Pearce
> writes:
>> On Mon, 27 Jun 2011 13:48:48 -0500
>> Patrick Green wrote:
>>
>>> The ARRL should impose an ERP limit for satellite contacts. That
>>> would solve the problem. I don't see how running amplifiers on FD
>> is
>>> in the spirit of what FD is all about. I've made contacts using
>> 50 mw
>>> so why do stations use 100+ watts *before* the antenna.. I
>> wouldn't
>>> want my kids playing around a FD site with this time of setup.
>> Wouldn't that be AMSAT's job? It's certainly possible to work an FM
>> bird with 5W from a handie, and a hand-held yagi.
>>
>> I don't understand the obsession with having all-singing-all-dancing
>> computer-controlled setups, where it automatically updates its
>> orbital elements, automatically calculates when the next pass is,
>> automatically calculates where to steer the aerial and what to tune
>> the radio to and leaving the operator to just push the PTT and shout
>> over the top of the QRP/P stations.
>>
>> All the computer-controlled stuff just plain isn't amateur radio.
>> If you want to sit in front of a computer and talk to people, use
>> Skype.
>>
>> Gordon MM0YEQ
>> ___
>> Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the
>> author.
>> Not an AMSAT-NA member? Join now to support the amateur satellite
>> program!
>> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>>
>
>
> Groupon™ Official Site
> 1 ridiculously huge coupon a day. Get 50-90% off your city's best!
> http://thirdpartyoffers.juno.com/TGL3141/4e08f240241f6c2ab4st04vuc
> ___
> Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
> __ Information from ESET NOD32 Antivirus, version of virus signature
> database 6241 (20110626) __
>
> The message was checked by ESET NOD32 Antivirus.
>
> http://www.eset.com
>
>
>
>
> __ Information from ESET NOD32 Antivirus, version of virus signature
> database 6245 (20110627) __
>
> The message was checked by ESET NOD32 Antivirus.
>
> http://www.eset.com
>
>
> ___
> Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
___
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Criminal Clint
Love it Alice's Restaurant! Radio stations still play this near thanksgiving he he he.. Joe WB9SBD The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 6/28/2011 7:02 PM, saguaroas...@cox.net wrote: > So did they take 37 8 by 10 color glossy photo's with circles and arrows and > a paragraph on the back of each one describing what each one was to be used > as eveidence against you? > > Apologies to Arlo > Rick > K7TEJ > > > Clint Bradford wrote: >> DEE>> My town does NOT have 7 squad cars... >> >> This is - by far - the funniest line I've heard in the past 24 hours, Dee! >> >> Clint >> ___ >> Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. >> Not an AMSAT-NA member? Join now to support the amateur satellite program! >> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Criminal Clint
It wasn't a truck is was a red vw microbus. Joe WB9SBD The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 6/28/2011 7:23 PM, Ted wrote: > No, but they took his truck to the dump...another case of blind justice.. > (further apologies to Arlo) > > Ted K7TRK > > -Original Message- > From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On > Behalf Of saguaroas...@cox.net > Sent: Tuesday, June 28, 2011 5:03 PM > To: Clint Bradford; amsat-bb@amsat.org > Subject: [amsat-bb] Re: Criminal Clint > > So did they take 37 8 by 10 color glossy photo's with circles and arrows and > a paragraph on the back of each one describing what each one was to be used > as eveidence against you? > > Apologies to Arlo > Rick > K7TEJ > > > Clint Bradford wrote: >> DEE>> My town does NOT have 7 squad cars... >> >> This is - by far - the funniest line I've heard in the past 24 hours, Dee! >> >> Clint >> ___ >> Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. >> Not an AMSAT-NA member? Join now to support the amateur satellite program! >> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: CA Ham Plates - Warning!
Wisconsin is the same way. I can have WB9SBD on my motorcycle, car, truck, van, as many vehicles as i want to have it on. thats gotta be a mess on their computers when they run a plate I would think. never had it happen, but wonder what does happen say if someone did have it on like all the above. Joe WB9SBD The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 6/29/2011 7:37 AM, H. Vordenbaum wrote: > In Texas we have "Radio Plates". I heard that you can have the same call > sign on multiple vehicles, so I imagine you could have the same sort of > problem if at first glance the vehicle didn't match. > Harvey, K5HV > Kerrville, TX > > - Original Message - > From: "Larry Gerhardstein" > To: "Clint Bradford" > Cc: "AMSAT BB" > Sent: Wednesday, June 29, 2011 1:24 AM > Subject: [amsat-bb] Re: CA Ham Plates - Warning! > > >> In Washington state, this can not happen. See their DOL personalized >> plate section. Anything like K6LCS "K6 LCS" are reserved for ham >> operator plates and will not be issued for personalized. Other states, >> including Montana, should adopt WA DOL's method of filtering ham call >> signs. In Montana, we have seen personalized plates containing >> combinations of letters looking exactly like ham calls--to non-hams. >> >> Larry W7IN, Plains MT >> ___ >> Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. >> Not an AMSAT-NA member? Join now to support the amateur satellite program! >> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: CA Ham Plates - Warning!
Ours say right across the top of the plate AMATEUR RADIO, and they do charge extra for them. ANY plate that is special order and not handed out off the top of the pile next in line costs extra. Be it a vanity plate and antiques plate a collector plate a veterans plate a disabled plate get the drift? The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 6/29/2011 3:26 PM, Larry Gerhardstein wrote: > If you have to apply for vanity to get ham letters on your plate, then > they're not really ham call letter plates, are they, as they are in > Montana and Washington. I stand on all of my prior posts on this matter. > > 73 es SK, Larry W7IN > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Wisconsin Members
I am looking for any Wisconsin Members. That can operate Mode "A" Actually a Reverse Mode "A" 10 meters up and 2 meters down. And even more important is if they happen to be in southwest Wisconsin would be a plus. Joe WB9SBD ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: CQ PE1RAH
Good Luck I have sent dozens, no bounces, and no replies either. Joe WB9SBD The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 7/27/2011 9:26 AM, Joe Leikhim wrote: > I am trying to reach William Leijenaar PE1RAH > (leijenaarelectron...@yahoo.com) about his U/V 30 KHz linear transponder > model LE005-R2. > > I get no response to his e-mails. Is there a better e-mail for him? > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Oscar-10
I remember using the "Oscarlocator" all the time in those days. http://www.studiorite.com/oldindex/images/OscarLocator1sm.jpg You could get the info from QST or there was either a weekly or daily Oscasr bullitens put out by W1AW, in CW on all their HF Freqs that they used. I do not remember if the info was also sent in SSB or not. I always copied the CW version. Joe WB9SBD The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 7/28/2011 1:48 AM, Dave Guimont wrote: > Our first method of pass determination was with a home made > plotter...I still have my original one, and think it is on my website: > > http://cid-1973adc8c1d3207c.skydrive.live.com/summary.aspx?sa=140581470 > > Nothing but a circular plot of the world with a curved arc that > represented the path of the satellitethen the time in minutes of > the pass marked off to determine AZ/EL. QST had a listing of pass > times for the month, very simple, and as you remember we used to have > 4,5,6 in a round table permitting about 20 second bitesWe gabbed > mostly about what we had just homebrewed, and continue the chat on > the next pass, or maybe the NEXT DAY!! > > Chuck, I'll dig out my old logs and let you know...When I upgraded I > kept my old callsign just for the recognition on the sats,a and ease > of operation, as you remember it took about four hands!! > > At 05:35 PM 7/27/2011, you wrote: > >> I remember working Oscar 7 back about '81..'82. I homebrewed a stack >> of 4, 11 element 2m yagis just for the purpose. I used a Kenwood >> TR-9000 (I think) for the uplink and a Kenwood TS-520s for the >> downlink. I don't even remember how we used to determine when the >> passes were but I think it had something to do with info published >> in QST. Soon after that, life interfered and I was inactive for many >> years. The most sad thing is that I didn't save my old logbooks. So, >> If by some odd chance, someone has a record of a contact with WD9JFY >> on the old bird, please let me know. Hindsight is always 20-20. :-(( >> >> Chuck, KM9U (EX WD9JFY) >> >> >> - Original Message - From: "Dave Guimont" >> To: "Thomas Doyle" >> Cc: >> Sent: Wednesday, July 27, 2011 16:44 >> Subject: [amsat-bb] Re: Oscar-10 >> >> >>> Hello Tom Doyle! >>> >>> We worked Oscar 8, mode J on 23mar82 at 1520Z...I've got #219 >>> entered in the remarks column, whatever that means, maybe Mode J >>> club??? With a check in the qsl column so I assume we exchanged cards.. >>> >>> So you can count San Diego county if that still works??? >>> >>> Counties to me mean hunting boundaries.. >>> >>> Lots of familiar callsany other OT's still around?? >>> >>> I have done the same thing with my logbooks over the past 31 years, >>> with quite a few big gapsFM seems to make sort of a buzzing in my >>> fillings??? >>> >>> >>>> If you have not been on satellites for a really long time (> 20 years) you >>>> may find this interesting. It explains why us old geezers say the old days >>>> were amazing. If you were on decades ago it may bring back memories. >>>> >>>> I have been getting back into hamming after a long hiatus and have been >>>> listening to the satellites for a month or two while working on a >>>> controller >>>> project and decided it was time to try and make a contact. Thanks to K4MOA >>>> and W5MPC, today I made my first sat contacts in a very long time. A little >>>> later I almost made a cw contact (used my trusty old J-38 key) on another >>>> sat but lost him. I told you this was interesting and really exciting. >>>> >>>> Thought I had better log the contacts and started looking for a logbook. >>>> Found a old slightly yellowed logbook with Oscar-10 written on the cover. >>>> As >>>> a group we hams (including me) are pretty cheap so I had saved this logbook >>>> because there were empty pages still left in it. I entered my new contacts >>>> on a fresh page (decided to splurge) and then looked back and found it was >>>> my first sat contact since 1983. I know you are still waiting for the >>>> exciting part. >>>> >>>> Here is a typical page from the log. I am in Wisconsin and believe it or >>>> not >>>> I had pile ups of europeans wanting to work Wisconsin of all things. It was >>>> a real thrill. T
[amsat-bb] Re: ARISSat missing antenna
worst case they don't have a 6" long chunk of wire that could shove into the connector on the box? Joe WB9SBD i GUESS THE DAYS OF CREATIVITY LIKE HOW THEY SAVED THE GUYS ON APOLLO 13 ISN'T ALIVE ANYMORE. The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 8/3/2011 11:23 AM, KM9U wrote: > We are waiting on a decision whether or not to deploy the satellite as is, > without the 70cm antenna. If, in fact, the 70cm antenna is missing, there > would of course be no communications possible through the transponder. > Translation: one more piece of space junk that is useless to the amateur > radio community that helped pay for it! > I guess I shouldn't be too upset. I'm sure there are many others that have > much more invested than I do. > > KM9U > "It ain't what you don't know that gets you into trouble. It's what you know > for sure that just ain't so." > -- Mark Twain > > > - Original Message - > From: "Armando Mercado" > To: > Sent: Wednesday, August 03, 2011 11:42 > Subject: [amsat-bb] ARISSat missing antenna > > >> ARISSat is missing an antenna and has been >> returned to the airlock. Discussions are >> under way as what to do next. Possible >> ARISSat would be deployed as is. >> >> Stay tuned... >> >> Armando, N8IGJ >> ___ >> Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. >> Not an AMSAT-NA member? Join now to support the amateur satellite program! >> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: ARISSat-1 - Photos from NASA TV
Can we have your user name and password to look at these photos? Joe WB9SBD The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 8/3/2011 10:56 AM, Clint Bradford wrote: > Fifty screenshots of ARISSat-1 taken from first 30 minutes of EVA29 ... > > https://www.me.com/gallery/#100271 > > > Clint Bradford > > > > > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: Life Expectancy ARISat-1
I remember that a few years ago with some other bird Like Ande or something like that? Joe WB9SBD The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 8/7/2011 2:47 AM, Jeff Yanko wrote: > If anything, maybe this calls for another Chicken Little Contest to see who > can come the closest to predicting re-entry. > > > 73, > > Jeff WB3JFS > > > > > - Original Message - > From: "Phil Karn" > To: "James" > Cc: > Sent: Sunday, August 07, 2011 12:34 AM > Subject: [amsat-bb] Re: Life Expectancy ARISat-1 > > >> On 8/6/11 8:55 PM, James wrote: >>> Thank you for your informative contribution.. >>> >>> Anyone with a real answer? >> Well, an educated guess can be made by looking at a plot of ISS altitude >> vs time: >> >> http://www.heavens-above.com/IssHeight.aspx >> >> The ISS is periodically reboosted, accounting for the sudden jumps in >> this sawtooth-like graph. Obviously ARISSat-1 won't be reboosted, so if >> you extrapolate the downward-sloping parts of the graph you can get a >> rough idea of what will happen. >> >> The ISS orbital decay rate varies with changes in upper atmospheric >> density with solar activity, but also because of changes in its attitude >> and the operation of the solar panels. >> >> The orbital decay rate also depends on qthe ballistic coefficient of the >> object. This has units of mass divided by area -- the mass of the object >> divided by the cross-sectional area it presents in its direction of >> flight. The larger the ballistic coefficient, the less its deceleration >> from drag as it flies through the thin upper atmosphere. >> >> The ISS probably has a larger ballistic coefficient than any other >> satellite simply because it's so huge. The volume of most objects >> increases as the cube of the size while the cross-sectional area >> increases with the square. Since mass is usually a function of volume, a >> large object will generally have a higher ballistic coefficient and last >> longer in a given orbit than a small object. >> >> Obviously there are exceptions to the "large lives longer" rule such as >> the "Echo" balloons. The actual ballistic coefficient for any given >> satellite has to be computed from its actual mass and dimensions and its >> orientation relative to its velocity vector. The ISS is a huge >> satellite, but it also has lightweight solar wings that greatly increase >> its cross-sectional area without increasing its mass very much, so they >> decrease its ballistic coefficient somewhat. >> >> ARISSat-1 is far smaller than the ISS, but it is fairly heavy for its >> size and it lacks large solar wings that create a lot of drag. This will >> reduce its decay rate, but it will still probably decay more quickly >> than the ISS. >> >> It was tossed out the back of the ISS against the velocity vector, and >> that immediately put it in a lower energy orbit with a higher mean >> motion. But any further increase in mean motion will be due to orbital >> decay, and from that we should be able to estimate its ballistic >> coefficient and how it will likely behave in the future. Determining an >> exact lifetime would be difficult because of the difficulty of >> predicting solar activity, but a good estimate can probably be made. >> >> --Phil >> >> ___ >> Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. >> Not an AMSAT-NA member? Join now to support the amateur satellite program! >> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb >> > > ___ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
