[amsat-bb] Re: Vega satellite video + Live Launch feed
There's a new E-St@r video at http://www.uk.amsat.org/4992 73 Trevor M5AKA ___ 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: Preamps and Arrows
Hi Tom, I use the ARR SP432VDG preamp along with my Arrow, and I have not had any problems. The setup works quite well actually. 73, Zack KD8KSN -Original Message- From: Tom Schuessler Sent: Thursday, February 23, 2012 10:32 PM To: amsat-bb@amsat.org Subject: [amsat-bb] Preamps and Arrows Has anyone used a preamplifier in a portable setup based on an Arrow cross yagi? Concern is whether there is enough isolation on 70 cm input from the 2m harmonics. ARR. Told me they would not recommend this setup. What you all think? Thanks, Tom, N5HYP -- Sent from my Android phone with K-9 Mail. Please excuse my brevity. ___ 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: [aprssig] TransAtlantic Balloon on 28 MHz (signal)
Line of sight may be in theory 8000 miles, and possible in satellites, but in this ballooning you will never ever get this because the Earth gets in the way. You may at best get a line of sight of 400 to 500 miles at the most. Joe WB9SBD The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 2/23/2012 10:38 PM, Roger wrote: So...in several weeks you will launch? Roger WA1KAT On 2/23/2012 3:57 PM, Bob Bruninga wrote: We are working on a 28 MHz transatlantic Balloon with a CW transmitter on 10m using (of course) a vertical dipole. Do you have a 10 meter (28 MHz) vertically polarized beam? The response was as expected. No one has. Therefore we will accept horizontal beam headings. Also we will ask for signal strength reports including a reference signal level with and without antenna. We just did a far-field test line-of-sight over 0.88 miles and had a 75 dB Signal margin (vertical to vertical). This is above about 21 dB of antenna noise. This implies about a line-of-sight range of over 8000 km. So it looks like signal strength should be no problem... The FT-817 S meter was tested to reveal a ridiculous range of from 1 to 20 dB per S unit. The range comparison is not much better as shown here... -43 dBm S+++= .25 km -55 dBm S++ = 0.4 km -63 dBm S+ = 2.5 km -73 dBm S9 = 8 km At altitude even overhead -93 dBm S8 = 82 km -97 dBm S7 = 100 km -98 dBm S6 = 115 km -99 dBm S5 = 130 km -100 dBm S4 = 184 km -101 dBm S3 = 206 km -102 dBm S2 = 231 km -103 dBm S1 = 258 km Min signal = 8000 km So hearing it won't be a problem, but guessing where it is will be a challenge. We are currently waiting on the Helium and the balloons. Total mass is about double the weight of a 9v battery. Launch probably a few weeks away yet. Oh, and Hydrogen (H2) which is 50% lighter than Helium only gains about 5%. The way to think about it is not to compare He to H2 (2-to-1) but to compare Air-to-Helium (10-to-1) and air-to-H2 (10-to.5) so the difference in lifting capacity is only 0.5 out of 10 or about 5%. Now it makes sense. The real advantage of H2 is you can make your own. He is a limited natural resource that we are running out of even faster than we are running out of dead dinosaurs. And it takes millions of years of radioactive decay to make more. 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
[amsat-bb] Re: Preamps and Arrows
Hello Tom Recently, I finished another homebrew cavity preamplifier and I have been trying it on my homebrew Arrow. Its performance has been wonderful! It allows me an excellent full duplex capability and I have received AO-27 until 1 degree! My current portable setup is a homebrew Arrow, a homebrew 70 cm/2m dawn converter, two 2m HT Kenwood TK-270 and the homebrew cavity preamplifier. Thanks very much to Domenico, I8CVS who gave me this great project. 73! Hector, CO6CBF > Has anyone used a preamplifier in a portable setup based on an Arrow cross > yagi? Concern > is whether there is enough isolation on 70 cm input from the 2m harmonics. > ARR. Told me > they would not recommend this setup. What you all think? > > Thanks, > > Tom, N5HYP > -- > Sent from my Android phone with K-9 Mail. Please excuse my brevity. > ___ > 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 > *** Genius is one per cent inspiration, and ninety-nine per cent perspiration. -- Thomas A. Edison *** --- Consulte la Enciclopedia Colaborativa Cubana http://www.ecured.cu/ ___ 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] QSL's for W5PFG/R EM13, 14, 16, 17
If you would like a paper QSL card for any of the EM13-17 grids I worked this week, please email me directly off-list and I will send you one. No SASE req'd. I will be uploading these to Logbook of the World over the weekend. 73 Clayton W5PFG ___ 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] Vega/ESA
Wonder how many cubes survived the trip into space? Are all the cubes working. Cannot find this data on the net. So trying here? 73's Etienne ZS6Y ___ 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: Preamps and Arrows
Hector,Domenico Sounds to me that a description of the homebrew antenna and Cavity Pre-amp would make for a great Journal Article. EMike E. Michael McCardel, KC8YLD Ohio Section Affiliated Club Coordinator, ARRL NO CODE REQUIRED When All Else Fails... There's Amateur Radio Learn more via www.ARRL.org On Fri, Feb 24, 2012 at 9:24 AM, Hector Luis Martinez Sis < hmarti...@ucf.edu.cu> wrote: > Hello Tom > > My current portable setup is a homebrew Arrow, a homebrew 70 cm/2m dawn > converter, two > 2m HT Kenwood TK-270 and the homebrew cavity preamplifier. > > Thanks very much to Domenico, I8CVS who gave me this great project. > > 73! > Hector, CO6CBF > > > > > > ___ 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: Preamps and Arrows
The short answer is yes ! It works very good. Every portable operation I've done was with an Arrow and SP-432-VDG and two HT's. One to transmit, one to receive. I ran the preamp off a spare HT battery, 9.6 volts. Worked just great. Also have done some portable operating with a Heathkit HW-24 using the same preamp and Arrow. Running all of it from a 7 amp-hour gel cell. The battery would last a couple of days, just using it on passes and running 10 watts on transmit. If you aren't familiar with the Heathkit HW-24, it's a dual-band mobile radio, 10 watts or 1 watt on 2 meters and 440, full duplex with memories, etc. If you find one used, it's a great little radio. It will also do cross-band repeat and with a VERY simple mod will do full coverage way outside the ham bands if you like to listen to other services. And yes it has P.L. and also scans. What else? They were around $600 new but I've seen them for around $100 at times. I've had mine for about 20 years and it's still perking right along. 73, John, K6YK On Thu, 23 Feb 2012 21:32:24 -0600 Tom Schuessler writes: > Has anyone used a preamplifier in a portable setup based on an Arrow > cross yagi? Concern is whether there is enough isolation on 70 cm > input from the 2m harmonics. ARR. Told me they would not recommend > this setup. What you all think? > > Thanks, > > Tom, N5HYP > -- > 53 Year Old Mom Looks 33 The Stunning Results of Her Wrinkle Trick Has Botox Doctors Worried http://thirdpartyoffers.juno.com/TGL3141/4f47c802e3ee0177f1f5st02vuc ___ 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: Preamps and Arrows
- Original Message - From: "Hector Luis Martinez Sis" To: "Tom Schuessler" Cc: Sent: Friday, February 24, 2012 3:24 PM Subject: [amsat-bb] Re: Preamps and Arrows > Hello Tom > > Recently, I finished another homebrew cavity preamplifier and I have been > trying it on my homebrew Arrow. Its performance has been wonderful! > It allows me an excellent full duplex capability and I have received AO-27 > until 1 degree! > > My current portable setup is a homebrew Arrow, a homebrew 70 cm/2m dawn > converter, two 2m HT Kenwood TK-270 and the homebrew cavity preamplifier. > > Thanks very much to Domenico, I8CVS who gave me this great project. > > 73! > Hector, CO6CBF Hi Hector ,CO6CBF I am very happy that you have built several cavity preamplifiers following my projet and they works very well. I have built two of them one for 432 MHz EME and another for satellite but considering that this preamplifier was published in Radio Rivista 9/1993 I never found someone duplicating more than one prototype because the cavity mechanical work requires a milling machine and a machanical shop. BTW I can supply the article and mechanical drawing to everybody is intendet to duplicate it. It is very strange that novadays no radio Ham want to built his hown preamp but only to buy it without learning noting. Congratulations to you Hector ! 73" de i8CVS Domenico > > Has anyone used a preamplifier in a portable setup based on an Arrow > > cross yagi? Concern is whether there is enough isolation on 70 cm input > > from the 2m harmonics. ARR. Told me they would not recommend this > > setup. What you all think? > > > > Thanks, > > > > Tom, N5HYP ___ 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: Preamps and Arrows
Hi EMike If you are interested on my cavity preamplifier article I can send to you a file with the article in italian and the mechanical drawing. Please let me know. If there is an interest to have this article publisched in AMSAT-Journal I will translate it into english. 73" de i8CVS Domenico - Original Message - From: "Edwin M. "EMike" McCardel, KC8YLD" To: Sent: Friday, February 24, 2012 6:18 PM Subject: [amsat-bb] Re: Preamps and Arrows > Hector,Domenico > > Sounds to me that a description of the homebrew antenna and Cavity Pre-amp > would make for a great Journal Article. > > EMike > > E. Michael McCardel, KC8YLD > Ohio Section Affiliated Club Coordinator, ARRL > > NO CODE REQUIRED > When All Else Fails... There's Amateur Radio > Learn more via www.ARRL.org > > > On Fri, Feb 24, 2012 at 9:24 AM, Hector Luis Martinez Sis < > hmarti...@ucf.edu.cu> wrote: > > > Hello Tom > > > > My current portable setup is a homebrew Arrow, a homebrew 70 cm/2m dawn > > converter, two > > 2m HT Kenwood TK-270 and the homebrew cavity preamplifier. > > > > Thanks very much to Domenico, I8CVS who gave me this great project. > > > > 73! > > Hector, CO6CBF > > > > > > > > > > > > > ___ > 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: Preamps and Arrows
If you work for a Journar article I would like to participate... Omar XE1AO M.C. Omar Alvarez Cárdenas Facultad de Telematica, U de C 316 1075 xe1...@ucol.mx omar...@hotmail.com De: "Edwin M. "EMike" McCardel, KC8YLD" Para: amsat-bb@amsat.org Enviado: Viernes, 24 de febrero, 2012 11:18:52 Asunto: [amsat-bb] Re: Preamps and Arrows Hector,Domenico Sounds to me that a description of the homebrew antenna and Cavity Pre-amp would make for a great Journal Article. EMike E. Michael McCardel, KC8YLD Ohio Section Affiliated Club Coordinator, ARRL NO CODE REQUIRED When All Else Fails... There's Amateur Radio Learn more via www.ARRL.org On Fri, Feb 24, 2012 at 9:24 AM, Hector Luis Martinez Sis < hmarti...@ucf.edu.cu> wrote: > Hello Tom > > My current portable setup is a homebrew Arrow, a homebrew 70 cm/2m dawn > converter, two > 2m HT Kenwood TK-270 and the homebrew cavity preamplifier. > > Thanks very much to Domenico, I8CVS who gave me this great project. > > 73! > Hector, CO6CBF > > > > > > ___ 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] mp3 recordings of SO-35 and UO-14 from September 2000
I am not subscribed to this list but I will check the archives as they are updated. This is a cross post from my blog, but I doubt anyone that may be interested will find my blog. Check the blog for full links to the mp3s. http://cupcakecarnival.net/2012/02/24/ham-fm-satellite-recordings-2000 Sometime in 2000 I got an Arrow II Satellite antenna. I used two HTs (hand held radios) (one for uplink and one for downlink) plus a tape recorder to record the pass. I would go out at night for a 12-15 minute satellite pass with all this gear and my Mom would laugh at me saying I looked like some sort of spy or something. Then I would endure the mosquitos while contacting stations all over the US, Canada and even a little bit of the Northern part of South America. It was a lot of fun. I ripped the audio from the tapes into mp3 a long time ago and shared it on the web but the site it was on is long gone so here it is again. I have just gone through and listened to the passes and written down as best I could all the callsigns, grid squares, state and names that I could make out. Let me know if you have any corrections or additions in the comments. All of these mp3s are under 2 Megabytes. I am John, KG4AKV and these were recorded from Wilmington, North Carolina, grid square FM-14. SO-35 0022 UTC September 5, 2000.mp3 Call NameGRID State AD4DN FM14 K1LO Larry FN42 N7SFI Randy K5VAS LO VE3EPS FN03 AJ9K EN53 KG4AKV KK5DO EL29 K5OE K1DRW EM79 N2LMD FM29 N5ZNL KF4CJV AA5AO SO-35 0043 UTC September 7, 2000.mp3 Call NameGRID State KB791 KK5DO NA3IE GaryEM98WV K1LO FN42 QFSDN40 K9HF EM48 KG4AKV VE2MJ NA2AA N8EIP EN91 K8KFJ KM5TE VE3GJS KC7QFS KG4AKV KE4AZN ???SWQ N5ZNL EM42 KD5SBAEL29 K8KFJ UO-14 0234 UTC September 5, 2000.mp3 CallGRID State Name KG4AKV FM14 KP3A PR Al KK5DO Bruce WA2HKS FN0NY KB8BWE EM79 OH K4WZ GA WA3SKQRich KD5JMZ EM30 LO Jeff KB3DWQ PN KA3RFIMonty KG4IFJ N2OYFN02 W4HKV KP3A heard me but didn't copy my call right. Didn't make any contacts after that? UO-14 September 8, 2000 0041 UTC part1.mp3 CallGRID State Name KK5DO NA2AA K5VAS EM32 LO VE2DIV FN35 Frank (complete empty pass on 440?) AA1UE FN32 MA portable VA3BJV KC2BYY FN30 NY N5ZNL N9UUR EN63 UO-14 September 8, 2000 0041 UTC part2.mp3 CallGRID State Name KG4AKV KG4ENR EM76 AA1UE AE9UN KB9UMT AA9UK N9TH N9UUR VE2DIV KK5DO EL29 ???PST AB0V NA2AA FN20 One funny thing I noticed about these recordings is I didn't make many contacts in them. On some passes I don't think I made any contacts! Odd. I did notice I was mostly putting out my call as opposed to calling other stations, maybe that is why. Regardless of what is in the recordings I remember making many contacts and having a good time. I think these recordings give you a good idea of what to expect if you haven't done an FM LEO satellite. It's fast so be prepared to make quick contacts. ___ 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: Vega satellite video + Live Launch feed
You're right Graham, I can recognize the accent. 73s Fabio iw8qku/5 On Wed, Feb 8, 2012 at 1:42 PM, g.shirvi...@btinternet.com < g.shirvi...@btinternet.com> wrote: > Uuum - most of the interviewees were Italian i think? > 73 > graham > G3VZV > -Original message- > From: Stefan Wagener > Sent: 08/02/2012, 10:37 > To: Trevor . > Cc: amsat-bb@amsat.org > Subject: [amsat-bb] Re: Vega satellite video + Live Launch feed > > > Nice video. > > Love it when the French speak English :-) > > Stefan, VE4NSA > > On Wed, Feb 8, 2012 at 4:18 AM, Trevor . wrote: > > Video about the Vega satellites > > http://www.uk.amsat.org/4476 > > > > Student Satellite Launch To Be Broadcast Live > > http://www.uk.amsat.org/4460 > > > > 73 Trevor M5AKA > > > > > > ___ > > 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: Preamps and Arrows
The new editor for AMSAT Journal is Doug, W5BL: w...@amsat.org jour...@amsat.org When Doug stepped up to the Editor post, AMSAT President Barry Baines, WD4ASW wrote, "Doug is looking for articles for publication, so feel free to contact him with material for inclusion in the Journal. If you've been active on the satellites, represented AMSAT at hamfests or club meetings, or done some home brewing of satellite equipment, and would like to write an article of your experiences, Doug is anxious to hear from you." -- 73 de JoAnne K9JKM k9...@amsat.org Editor, AMSAT News Service -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Omar Alvarez Sent: Friday, February 24, 2012 12:22 To: Edwin M. "EMike" McCardel, KC8YLD; amsat-bb@amsat.org Subject: [amsat-bb] Re: Preamps and Arrows If you work for a Journar article I would like to participate... Omar XE1AO ___ 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: Vega/ESA
On Fri, February 24, 2012 18:13, Etienne Swart wrote: > Wonder how many cubes survived the trip into space? > Are all the cubes working. > Cannot find this data on the net. > So trying here? Take a look at http://www.dk3wn.info/p/ > 73's > Etienne ZS6Y -- With regards PE0SAT Internet web-page http://www.pe0sat.vgnet.nl/ ___ 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: Vega/ESA
I'm not sure about E-St@r and Robusta. E-St@r's website notes a signal was heard on launch day but no data could be decoded. Robusta's website is quoting a frequency of 437.350 MHz rather than the planned 437.325 MHz but no mention of anything being received. 73 Trevor M5AKA --- On Fri, 24/2/12, Etienne Swart wrote: > Wonder how many cubes survived the > trip into space? > Are all the cubes working. > Cannot find this data on the net. > So trying here? > 73's > Etienne ZS6Y ___ 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: Motor for Yaesu G5500 Azimuth Rotator?
On 2/23/2012 3:23 PM, Phil Karn wrote: These variable frequency/variable voltage AC motor drives have long been common in industry, and they've become the standard in hybrid and newer electric cars. Phil, Your fans will not be completely happy until your controller runs a state-space model of the motor/antenna system, with software that is careful to generate acceleration and jerk limited commands such that mechanical resonances are not excited. With tongue firmly in cheek -Joe KM1P ___ 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] Keps
73 M0tfo ALMASAT1 1 38078U 12006B 12054.81752532 .00014251 0-0 41679-3 0 196 2 38078 069.4835 215.4752 0775338 031.3184 333.1754 14.04699930 1464 MO-72 1 38079U 12006C 12054.52375822 .00027779 0-0 72603-3 0 299 2 38079 069.4926 216.0919 0779154 031.7546 332.8100 14.06086925 1416 OBJECT D 1 38080U 12006D 12054.52519702 .00028219 0-0 74626-3 0 318 2 38080 069.4913 216.0893 0778939 031.6156 332.9274 14.05889150 1414 OBJECT E 1 38081U 12006E 12054.80988760 .00027398 0-0 73195-3 0 333 2 38081 069.4855 215.4451 0778010 031.3761 333.1357 14.05883490 1452 XATCOBEO 1 38082U 12006F 12054.73910927 .00032640 0-0 87928-3 0 319 2 38082 069.4861 215.6069 0777092 031.4418 333.0802 14.05882265 1448 OBJECT G 1 38083U 12006G 12054.73876769 .00031005 0-0 82567-3 0 313 2 38083 069.4841 215.6050 0778100 031.4731 333.0584 14.05911687 1444 OBJECT H 1 38084U 12006H 12054.73969709 .00025492 0-0 68574-3 0 260 2 38084 069.4890 215.6111 0778131 031.4453 333.0828 14.05727339 1442 GOLIAT 1 38085U 12006J 12054.73978438 .00025984 0-0 70136-3 0 252 2 38085 069.4842 215.6079 0777813 031.4415 333.0844 14.05721488 1444 ___ 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: Preamps and Arrows
I would be interested in an english translation of your article whether it gets published or not. Jeff Moore -- KE7ACY CN94 - Original Message - From: "i8cvs" Hi EMike If you are interested on my cavity preamplifier article I can send to you a file with the article in italian and the mechanical drawing. Please let me know. If there is an interest to have this article publisched in AMSAT-Journal I will translate it into english. 73" de i8CVS Domenico - Original Message - From: "Edwin M. "EMike" McCardel, KC8YLD" To: Sent: Friday, February 24, 2012 6:18 PM Subject: [amsat-bb] Re: Preamps and Arrows > Hector,Domenico > > Sounds to me that a description of the homebrew antenna and Cavity Pre-amp > would make for a great Journal Article. > > EMike > > E. Michael McCardel, KC8YLD > Ohio Section Affiliated Club Coordinator, ARRL > > NO CODE REQUIRED > When All Else Fails... There's Amateur Radio > Learn more via www.ARRL.org > > > On Fri, Feb 24, 2012 at 9:24 AM, Hector Luis Martinez Sis < > hmarti...@ucf.edu.cu> wrote: > > > Hello Tom > > > > My current portable setup is a homebrew Arrow, a homebrew 70 cm/2m dawn > > converter, two > > 2m HT Kenwood TK-270 and the homebrew cavity preamplifier. > > > > Thanks very much to Domenico, I8CVS who gave me this great project. > > > > 73! > > Hector, CO6CBF > > > > > > > > > > > > > ___ > 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] TechEdSat - 437 MHz + Iridium/Orbcomm
As well as 437 MHz this satellite will also use the Iridium and Orbcomm networks, see http://www.uk.amsat.org/5018 73 Trevor M5AKA ___ 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] Oscar 67
Hello all. Any more news on Oscar 67. Kev ___ 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: SO-67 Status
>> ... any word??? We are all anxiously watching their Web site for updates! http://www.amsatsa.org.za/ Clint Bradford http://www.clintbradford.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: Motor for Yaesu G5500 Azimuth Rotator?
On 2/23/12 2:51 PM, Tim Cunningham wrote: > I have rewound a few of these motor coils and a #24 to #26 gauge enamel > wire should work. A #22 gauge enamel wire would be too large and you > would not be able to wind the same number of turns. > > It is the breakdown of the enamel due to wire heating that makes them > fail by creating a short circuit in the windings. I don't remember the wire size I used (it's been over 20 years) but you're right about the short circuit. Just one shorted turn will form the shorted secondary of a transformer, and the I^2R losses in that turn will create quite a bit of heat that will further damage the insulation on the nearby windings until the whole thing is toast. ___ 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: Motor for Yaesu G5500 Azimuth Rotator?
Just a quick update -- Yaesu Parts just emailed me and advised that they don't think any of the motors from other rotators are directly compatible with the G5500 azimuth motor -- the estimate on arrival time of more stock is uncertain, possibly 4-6 weeks or longer. I haven't sourced a direct replacement motor yet; the original motor was sent down to Eurton Electric yesterday for rewinding, hopefully I'll have a quote and time estimate for that soon. 73! Dave KB5WIA On Fri, Feb 24, 2012 at 4:26 PM, Phil Karn wrote: > On 2/23/12 2:51 PM, Tim Cunningham wrote: >> I have rewound a few of these motor coils and a #24 to #26 gauge enamel >> wire should work. A #22 gauge enamel wire would be too large and you >> would not be able to wind the same number of turns. >> >> It is the breakdown of the enamel due to wire heating that makes them >> fail by creating a short circuit in the windings. > > I don't remember the wire size I used (it's been over 20 years) but > you're right about the short circuit. Just one shorted turn will form > the shorted secondary of a transformer, and the I^2R losses in that turn > will create quite a bit of heat that will further damage the insulation > on the nearby windings until the whole thing is toast. > ___ 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: Motor for Yaesu G5500 Azimuth Rotator?
On 2/24/12 11:58 AM, Joe Fitzgerald wrote: > Your fans will not be completely happy until your controller runs a > state-space model of the motor/antenna system, with software that is > careful to generate acceleration and jerk limited commands such that > mechanical resonances are not excited. > > > > With tongue firmly in cheek What do you mean? That's exactly my plan. Fortunately, the problem of tracking a LEO satellite with a deadband of 5-10 degrees is a very non-demanding problem. That's why most hams are still doing it with primitive, bang-bang control. But I think we can do a lot better. It's time to get serious about moving to the microwave bands. That will require one thing on both the ground and in space: much tighter antenna pointing. But the payoffs will be enormous: much smaller and lighter ground antennas that will be practical for many more hams, much better signal-to-noise ratios, and much higher bandwidths and data rates. All this could mean substantial growth for AMSAT. But we'll have to let go of not only inefficient analog modulation but also the low frequency bands, especially 2m. ___ 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] Rotor vs problems
I am looking to upgrade my ant from fixed to rotor, but am wondering if it is really worth it? I see A Lot of posts on here with all kinds of questions and problems. However my back is not handling manually rotating my simple tower with a couple Diamond yagis and a vertical at the top. If I were to spend the money, what would be the best no hassle rotator I Should get? Thanks for any info I love talking with you people on the sats but my manual setup is not so happy... :( Kevin KF7MYK ___ 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: Preamps and Arrows
Hello Mike I will be happy to make some descriptions of my homebrew Sat projects for a Journal Article. My Satellite Setup at home is majority homebrewed by myself also. I have been increasing its performance step by step. 73! Hector, CO6CBF -Mensaje original- De: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] En nombre de Edwin M. "EMike" McCardel, KC8YLD Enviado el: viernes, 24 de febrero de 2012 12:19 Para: amsat-bb@amsat.org Asunto: [amsat-bb] Re: Preamps and Arrows Hector,Domenico Sounds to me that a description of the homebrew antenna and Cavity Pre-amp would make for a great Journal Article. EMike E. Michael McCardel, KC8YLD Ohio Section Affiliated Club Coordinator, ARRL NO CODE REQUIRED When All Else Fails... There's Amateur Radio Learn more via www.ARRL.org On Fri, Feb 24, 2012 at 9:24 AM, Hector Luis Martinez Sis < hmarti...@ucf.edu.cu> wrote: > Hello Tom > > My current portable setup is a homebrew Arrow, a homebrew 70 cm/2m dawn > converter, two > 2m HT Kenwood TK-270 and the homebrew cavity preamplifier. > > Thanks very much to Domenico, I8CVS who gave me this great project. > > 73! > Hector, CO6CBF > > > > > > ___ 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 Este mensaje ha sido enviado mediante el servicio de correo electronico que ofrece la Federacion de Radioaficionados de Cuba a sus miembros para respaldar el cumplimiento de los objetivos de la organizacion y su politica informativa. La persona que envia este correo asume el compromiso de usar el servicio a tales fines y cumplir con las regulaciones establecidas. ___ 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: Preamps and Arrows
I am interested in this, however, the purpose of my post was to promote the Journal. I hope you will consider writing something up. As Joanne pointed out The new editor for AMSAT Journal is Doug, W5BL: w...@amsat.org jour...@amsat.org EMike EMike McCardel, KC8YLD ARRL Ohio Section Affiliated Club Coordinator AMSAT-Edu Moderator Sent from my iPhone On Feb 24, 2012, at 21:22, "Hector, CO6CBF" wrote: > Hello Mike > > I will be happy to make some descriptions of my homebrew Sat projects for a > Journal Article. My Satellite Setup at home is majority homebrewed by myself > also. I have been increasing its performance step by step. > > 73! > > Hector, CO6CBF > > > > -Mensaje original- > De: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] En nombre > de Edwin M. "EMike" McCardel, KC8YLD > Enviado el: viernes, 24 de febrero de 2012 12:19 > Para: amsat-bb@amsat.org > Asunto: [amsat-bb] Re: Preamps and Arrows > > Hector,Domenico > > Sounds to me that a description of the homebrew antenna and Cavity Pre-amp > would make for a great Journal Article. > > EMike > > E. Michael McCardel, KC8YLD > Ohio Section Affiliated Club Coordinator, ARRL > > NO CODE REQUIRED > When All Else Fails... There's Amateur Radio > Learn more via www.ARRL.org > > > On Fri, Feb 24, 2012 at 9:24 AM, Hector Luis Martinez Sis < > hmarti...@ucf.edu.cu> wrote: > >> Hello Tom >> >> My current portable setup is a homebrew Arrow, a homebrew 70 cm/2m dawn >> converter, two >> 2m HT Kenwood TK-270 and the homebrew cavity preamplifier. >> >> Thanks very much to Domenico, I8CVS who gave me this great project. >> >> 73! >> Hector, CO6CBF >> >> >> >> >> >> > ___ > 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 > > Este mensaje ha sido enviado mediante el servicio de correo electronico que > ofrece la Federacion de Radioaficionados de Cuba a sus miembros para > respaldar el cumplimiento de los objetivos de la organizacion y su politica > informativa. La persona que envia este correo asume el compromiso de usar el > servicio a tales fines y cumplir con las regulaciones establecidas. ___ 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
