[amsat-bb] Re: Antenna Opinions?
Greg, I would keep the one that works the best. I have been disappointed in the performance of long boom Yagi's for UHF. Resistance loss in the elements often reduces the gain by several dB over calculated gain. Also they are very narrow band, the helix is good for an octave. Art, KC6UQH -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Greg D. Sent: Tuesday, September 21, 2010 10:04 PM To: amsat-bb@amsat.org Subject: [amsat-bb] Antenna Opinions? Hi folks, So, we had a swap meet a couple of weekends ago, and I found a bargain I couldn't refuse. Of course, now I need to decide what to do with it... The Find was a 35 element 1296mHz antenna, well built and in excellent condition. Linearly polarized, horizontal; supposed to be 23dBi gain. Manufacturer, of course, is unknown. No markings, but it does not look home-built. By the mounting hardware, it looks like it was part of some sort of stacked array. The problem is that I already have a 1296mHz antenna. Home-made, circularly polarized, 18 turns Helix. Should be something like 17dBic, if the calculations are correct. In the shack, which is at the wrong end of 60' of 1/2 hardline and a total of about 15' of RG-213 or something like it, I have my Yaesu 736R and its 10 watts of screaming RF power. No preamps. Which antenna should I keep up on the rotor assembly? Last weekend I put up the new antenna. I've made one AO-51 LU pass with the new antenna, and I was not impressed. Several times I couldn't get into the bird, presumably because of the crossed polarization. But when I did get in, it was full quieting, even at low elevations. I don't recall having this much trouble with the Helix. I think AO-51 is the only current satellite on L-band, right? For other uses, there's nothing terrestrial to aim at, repeaters-wise; they're all hiding behind one or more hills, or went off the air years ago. That leaves Weak Signal work (hence the horizontal mounting). I do have one shot into the valley, to the North West, but probably slim pickings for contacts. I haven't tried EME. I'm leaning towards putting the Helix back up, and passing the new one on to someone more able to use it. What are your thoughts? Thanks, Greg KO6TH ___ 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 __ Information from ESET NOD32 Antivirus, version of virus signature database 5468 (20100921) __ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __ Information from ESET NOD32 Antivirus, version of virus signature database 5468 (20100921) __ The message was checked by ESET NOD32 Antivirus. http://www.eset.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
[amsat-bb] Re: Antenna Opinions?
Hi Greg et al I have been partial with the helix for satellites. I run 10W to a 16 turn helix through 40 feet of LMR-400. I rarely have an issue getting into AO-51. I believe AO -51 is our only L band bird, I try to exercise my gear when the opportunity is there. I experience very little fading with the L band uplink, input to the satellite is quite solid down to fairly low elevations. The yagi would as you mentioned would better for terrestial 1.2ghz stuff. 73 Bob W7LRD - Original Message - From: Greg D. ko6th_g...@hotmail.com To: amsat-bb@amsat.org Sent: Tuesday, September 21, 2010 10:03:31 PM Subject: [amsat-bb] Antenna Opinions? Hi folks, So, we had a swap meet a couple of weekends ago, and I found a bargain I couldn't refuse. Of course, now I need to decide what to do with it... The Find was a 35 element 1296mHz antenna, well built and in excellent condition. Linearly polarized, horizontal; supposed to be 23dBi gain. Manufacturer, of course, is unknown. No markings, but it does not look home-built. By the mounting hardware, it looks like it was part of some sort of stacked array. The problem is that I already have a 1296mHz antenna. Home-made, circularly polarized, 18 turns Helix. Should be something like 17dBic, if the calculations are correct. In the shack, which is at the wrong end of 60' of 1/2 hardline and a total of about 15' of RG-213 or something like it, I have my Yaesu 736R and its 10 watts of screaming RF power. No preamps. Which antenna should I keep up on the rotor assembly? Last weekend I put up the new antenna. I've made one AO-51 LU pass with the new antenna, and I was not impressed. Several times I couldn't get into the bird, presumably because of the crossed polarization. But when I did get in, it was full quieting, even at low elevations. I don't recall having this much trouble with the Helix. I think AO-51 is the only current satellite on L-band, right? For other uses, there's nothing terrestrial to aim at, repeaters-wise; they're all hiding behind one or more hills, or went off the air years ago. That leaves Weak Signal work (hence the horizontal mounting). I do have one shot into the valley, to the North West, but probably slim pickings for contacts. I haven't tried EME. I'm leaning towards putting the Helix back up, and passing the new one on to someone more able to use it. What are your thoughts? Thanks, Greg KO6TH ___ 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] Jan 09 sat passes
Hello all, I have a rather unusual question: can anyone tell me what satellite was visible over JM49MG around 20.20 UTC of 06 Jan 2009? I have in my log a contact via VO-52, but I received a QSL for that same contact via AO-07 orbit 56249. I tried with my predict program but with current keps it gives result not meaningful for 06 January 2009. Thanks in advance Frank IZ8DWF ___ 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] AO-7 log editing.
Hello Dieter. Try this. Click on ... NEW CONTACT. Scroll to the bottom of the page. Check the - REMEMBER ME- box. You should now be able to edit your 'own' entries by clicking on the spyglass at the left of the screen. Despite repeated requests, N1DID (formerly W0EEC) never updated my editorial privilages a couple of years ago so if that 'trick' doesn't work Dieter I'm afraid I can't help. I CC''d this to the Amsat-bb for the benefit of others since it seems to be a reoccuring problem. 73 John. la2...@amsat.org ___ 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: Antenna Opinions?
M2 makes a 35 element 1296 MHz yagi, on about a 6' boom. individual elements are insulated thru the boom with keepers. Folded dipole driven element. I used 2 each stacked vertically for AO-40. Yes, they are pointy. Stan, W1LE Cape Cod FN41sr On 9/22/2010 1:52 AM, Art McBride wrote: Greg, I would keep the one that works the best. I have been disappointed in the performance of long boom Yagi's for UHF. Resistance loss in the elements often reduces the gain by several dB over calculated gain. Also they are very narrow band, the helix is good for an octave. Art, KC6UQH -- ___ 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: Antenna Opinions?
- Original Message - From: Greg D. ko6th_g...@hotmail.com To: amsat-bb@amsat.org Sent: Wednesday, September 22, 2010 7:03 AM Subject: [amsat-bb] Antenna Opinions? Hi folks, The Find was a 35 element 1296mHz antenna, well built and in excellent condition. Linearly polarized, horizontal; supposed to be 23dBi gain. Manufacturer, of course, is unknown. No markings, but it does not look home-built. By the mounting hardware, it looks like it was part of some sort of stacked array. Thanks, Greg KO6TH Hi Greg, KO6TH It is probably a Tonna 35 element yagi. 73 de i8CVS Domenico ___ 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: Antenna Opinions?
I installed one of these a few months ago, in place of my 20-turn Wimo helix. Both are nice antennas, but I'll give the edge to the M2 yagi (more gain and it mounts balanced on the elevation boom). I have mine with vertical polarity. Since AO-51 is linear on L-band, it shouldn't matter--but putting that little antenna horizontal in line with my metal boom didn't seem to make much sense 73, Mark N8MH On Wed, Sep 22, 2010 at 8:50 AM, Stan, W1LE stanw...@verizon.net wrote: M2 makes a 35 element 1296 MHz yagi, on about a 6' boom. individual elements are insulated thru the boom with keepers. Folded dipole driven element. I used 2 each stacked vertically for AO-40. Yes, they are pointy. Stan, W1LE Cape Cod FN41sr On 9/22/2010 1:52 AM, Art McBride wrote: Greg, I would keep the one that works the best. I have been disappointed in the performance of long boom Yagi's for UHF. Resistance loss in the elements often reduces the gain by several dB over calculated gain. Also they are very narrow band, the helix is good for an octave. Art, KC6UQH -- ___ 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 -- Mark L. Hammond [N8MH] ___ 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: Antenna Opinions?
- Original Message - From: Greg D. ko6th_g...@hotmail.com To: amsat-bb@amsat.org Sent: Wednesday, September 22, 2010 7:03 AM Subject: [amsat-bb] Antenna Opinions? Hi folks, The Find was a 35 element 1296mHz antenna, well built and in excellent condition. Linearly polarized, horizontal; supposed to be 23dBi gain. Manufacturer, of course, is unknown. No markings, but it does not look home-built. By the mounting hardware, it looks like it was part of some sort of stacked array. Thanks, Greg KO6TH Hi Greg, KO6TH If your antenna is from Tonna it must be 3,07 meters long. Tonna make two models one for DX and SAT and the other one for ATV By the way the gain is 20 dB isotropic. 20635 35 ELEMENTI 1260/1300 MHz dx,sat 20 dB 3,07 meters long 20636 35 ELEMENTI 1250/1260 MHz ATV 20 dB 3,07 meters long 73 de i8CVS Domenico ___ 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: Antenna Opinions?
Okay, my 35 ele M2 is about 10 feet long: http://www.m2inc.com/index2.html They do sell a 22 element version that is about 6' long: http://www.m2inc.com/index2.html Mark N8MH On Wed, Sep 22, 2010 at 9:10 AM, Mark L. Hammond marklhamm...@gmail.com wrote: I installed one of these a few months ago, in place of my 20-turn Wimo helix. Both are nice antennas, but I'll give the edge to the M2 yagi (more gain and it mounts balanced on the elevation boom). I have mine with vertical polarity. Since AO-51 is linear on L-band, it shouldn't matter--but putting that little antenna horizontal in line with my metal boom didn't seem to make much sense 73, Mark N8MH On Wed, Sep 22, 2010 at 8:50 AM, Stan, W1LE stanw...@verizon.net wrote: M2 makes a 35 element 1296 MHz yagi, on about a 6' boom. individual elements are insulated thru the boom with keepers. Folded dipole driven element. I used 2 each stacked vertically for AO-40. Yes, they are pointy. Stan, W1LE Cape Cod FN41sr On 9/22/2010 1:52 AM, Art McBride wrote: Greg, I would keep the one that works the best. I have been disappointed in the performance of long boom Yagi's for UHF. Resistance loss in the elements often reduces the gain by several dB over calculated gain. Also they are very narrow band, the helix is good for an octave. Art, KC6UQH -- ___ 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 -- Mark L. Hammond [N8MH] -- Mark L. Hammond [N8MH] ___ 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: Antenna Opinions?
I use a Directive Systems 25 element loop yagi and it works great for AO-51 L band. http://www.directivesystems.com I'm feeding it with 10 watts via 35 feet of LMR400. Directive Systems antennas are very well built and less expensive than some other popular brands. Steve N5EN --- ko6th_g...@hotmail.com wrote: From: Greg D. ko6th_g...@hotmail.com To: amsat-bb@amsat.org Subject: [amsat-bb] Antenna Opinions? Date: Tue, 21 Sep 2010 22:03:31 -0700 Hi folks, So, we had a swap meet a couple of weekends ago, and I found a bargain I couldn't refuse. Of course, now I need to decide what to do with it... The Find was a 35 element 1296mHz antenna, well built and in excellent condition. Linearly polarized, horizontal; supposed to be 23dBi gain. Manufacturer, of course, is unknown. No markings, but it does not look home-built. By the mounting hardware, it looks like it was part of some sort of stacked array. The problem is that I already have a 1296mHz antenna. Home-made, circularly polarized, 18 turns Helix. Should be something like 17dBic, if the calculations are correct. In the shack, which is at the wrong end of 60' of 1/2 hardline and a total of about 15' of RG-213 or something like it, I have my Yaesu 736R and its 10 watts of screaming RF power. No preamps. Which antenna should I keep up on the rotor assembly? Last weekend I put up the new antenna. I've made one AO-51 LU pass with the new antenna, and I was not impressed. Several times I couldn't get into the bird, presumably because of the crossed polarization. But when I did get in, it was full quieting, even at low elevations. I don't recall having this much trouble with the Helix. I think AO-51 is the only current satellite on L-band, right? For other uses, there's nothing terrestrial to aim at, repeaters-wise; they're all hiding behind one or more hills, or went off the air years ago. That leaves Weak Signal work (hence the horizontal mounting). I do have one shot into the valley, to the North West, but probably slim pickings for contacts. I haven't tried EME. I'm leaning towards putting the Helix back up, and passing the new one on to someone more able to use it. What are your thoughts? Thanks, Greg KO6TH ___ 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: Antenna Opinions?
Greg, My two cents is that AO-51 seems to be very sensitive on the L band receive, so a decent antenna will get in fine. I have been using RHCP on my uplink, a 31 turn homebrew helix modeled after the VE3NPC, and I have not experienced any fading problems on uplink. My choice then is to opt for the circular polarization. I do feed mine directly at the antenna (about 5 feet of LMR-400 from the upconverter) but I think your helix with the power you are feeding it is probably quite capable and a better idea to avoid the fading. 73, Jerry N0JY Hi folks, So, we had a swap meet a couple of weekends ago, and I found a bargain I couldn't refuse. Of course, now I need to decide what to do with it... I'm leaning towards putting the Helix back up, and passing the new one on to someone more able to use it. What are your thoughts? Thanks, Greg KO6TH ___ 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] antennas
Hi : I have owned and tried nearly antenna on the market. I have used patch feed , dishes. eggbeaters, yagi,s etc. I have had Cushcraft, Hy gain , M2, and KLM , s The best overall performance antennas are KLM, s . I use switchers on all the antennas too. Jerry w0sat ___ 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] Downconverters on Ebay
Just found a person selling several downconverters on Ebay that look like they could be used for AO-51 mode S. (with modifications) No Bias T or power supplies though. http://shop.ebay.com/the_consumer_rebellion/m.html?_nkw=_armrs=1_from=_ipg=_trksid=p4340 73 Matt W5LL ___ 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: Jan 09 sat passes
But did you use keps from that time period? Today's keps won't work. On 22-Sep-10 14:26, Zachary Beougher wrote: Frank, I simulated that time on Orbitron ( 06 January 2009, 20:20 UTC), and according to Orbitron, neither AO27 or VO52 were over your QTH at the time. I am sending you the screenshot of that particular time via a different email message. 73, Zack KD8KSN ___ 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: Jan 09 sat passes
My impression of the 'simulate' feature of Orbitron was that it would automatically retrieve the old keps. At least it never gave the the option of using the old. Maybe I imagined it better than it is. Could an Orbitron guru correct me? Zack KD8KSN -- From: Nigel Gunn G8IFF/W8IFF ni...@ngunn.net Sent: Wednesday, September 22, 2010 11:15 AM To: amsat-bb@amsat.org Subject: [amsat-bb] Re: Jan 09 sat passes But did you use keps from that time period? Today's keps won't work. On 22-Sep-10 14:26, Zachary Beougher wrote: Frank, I simulated that time on Orbitron ( 06 January 2009, 20:20 UTC), and according to Orbitron, neither AO27 or VO52 were over your QTH at the time. I am sending you the screenshot of that particular time via a different email message. 73, Zack KD8KSN ___ 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: ISS keps
I checked against http://iss.astroviewer.net/. Today issue is better, however, still actual ISS posn about 100 miles ahead of SatPC32's displayed posn. My computer clock is off by no more than 1 second. For the clock to throw posn off by 100 miles, clock would need to be in error by about 15 seconds. Larry W7IN On 9/20/2010 5:44 PM, Larry Gerhardstein wrote: Is there a special or alternate keps for ISS? Today I listened to NA1SS and when Col. Doug reported a QTH of North Dakota, my SatPC32 was displaying them at about Indiana. Still was able to copy them over my 12 degree hill when SatPC32 was reporting them over the Atlantic coast line. I had just done an update. ___ 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: Jan 09 sat passes
Hi Frank, I used the keps from January 2009 and set the PC clock to this date - it was HAMSAT VO-52. AO-7 was near Australia at this time. 73, Mike DK3WN -- From: francesco messineo francesco.messi...@gmail.com Sent: Wednesday, September 22, 2010 5:52 AM To: AMSAT BB amsat-bb@amsat.org Subject: [amsat-bb] Jan 09 sat passes Hello all, I have a rather unusual question: can anyone tell me what satellite was visible over JM49MG around 20.20 UTC of 06 Jan 2009? I have in my log a contact via VO-52, but I received a QSL for that same contact via AO-07 orbit 56249. I tried with my predict program but with current keps it gives result not meaningful for 06 January 2009. Thanks in advance Frank IZ8DWF ___ 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: ISS keps
Hi! I checked against http://iss.astroviewer.net/. Today issue is better, however, still actual ISS posn about 100 miles ahead of SatPC32's displayed posn. My computer clock is off by no more than 1 second. For the clock to throw posn off by 100 miles, clock would need to be in error by about 15 seconds. Just create an account at http://www.space-track.org/ and download the keps from there. I just logged into Space Track, and they have an ISS element set that was updated at approximately 2053 UTC today (not long before I sent this message). Regardless of the freshness of the elements, it sometimes takes a little bit before after the ISS has a boost raising its orbit to where the keps are back to being on the mark. 73! Patrick WD9EWK/VA7EWK http://www.wd9ewk.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
[amsat-bb] Re: ISS keps
(after seeing weirdness in the message I sent, I will try it again so it looks better) I checked against http://iss.astroviewer.net/. Today issue is better, however, still actual ISS posn about 100 miles ahead of SatPC32's displayed posn. My computer clock is off by no more than 1 second. For the clock to throw posn off by 100 miles, clock would need to be in error by about 15 seconds. Just create an account at http://www.space-track.org/ and download the keps from there. I just logged into Space Track, and they have an ISS element set that was updated at approximately 2053 UTC today (not long before I sent this message). Regardless of the freshness of the elements, it sometimes takes a little bit after the ISS has a boost raising its orbit to where the keps are back to being on the mark. 73! Patrick WD9EWK/VA7EWK http://www.wd9ewk.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
[amsat-bb] Re: Jan 09 sat passes
Hi Frank, I used the keps from January 2009 and set the PC clock to this date - it was HAMSAT VO-52. AO-7 was near Australia at this time. 73, Mike DK3WN -- From: francesco messineo francesco.messi...@gmail.com Sent: Wednesday, September 22, 2010 5:52 AM To: AMSAT BB amsat-bb@amsat.org Subject: [amsat-bb] Jan 09 sat passes Hello all, I have a rather unusual question: can anyone tell me what satellite was visible over JM49MG around 20.20 UTC of 06 Jan 2009? I have in my log a contact via VO-52, but I received a QSL for that same contact via AO-07 orbit 56249. I tried with my predict program but with current keps it gives result not meaningful for 06 January 2009. Thanks in advance Frank IZ8DWF ___ 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: Jan 09 sat passes
Which begs the question, where can one find archived keps? AMSAT does not archive the KEPS mailing list, so unless someone on here is a subscriber and has keps bulletins from that far back, where else can you look? George, KA3HSW - Original Message - From: Nigel Gunn G8IFF/W8IFF ni...@ngunn.net To: amsat-bb@amsat.org Sent: Wednesday, September 22, 2010 10:15 AM Subject: [amsat-bb] Re: Jan 09 sat passes But did you use keps from that time period? Today's keps won't work. [snip] ___ 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: Jan 09 sat passes
If it's like every other tracking program I've ever used, it overwrites the old keps each time you update it. You're not given the option to use the old ones because they're not there anymore. George, KA3HSW - Original Message - From: Zachary Beougher zack.kd8...@hotmail.com To: Nigel Gunn G8IFF/W8IFF ni...@ngunn.net; amsat-bb@amsat.org Sent: Wednesday, September 22, 2010 3:24 PM Subject: [amsat-bb] Re: Jan 09 sat passes My impression of the 'simulate' feature of Orbitron was that it would automatically retrieve the old keps. At least it never gave the the option of using the old. Maybe I imagined it better than it is. Could an Orbitron guru correct me? Zack KD8KSN [snip] ___ 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: Jan 09 sat passes
George, Try Celestrak: www.celestrak.com. There is a link to historical data. There's a lot there, but the administrator, T.S. Kelso says that the full archive would be too large to store on line, so if you need something that's not there you can submit a special request. Haven't tried it yet for Historical data, but Celestrak is a good site for current keps lots of other interesting stuff. 73 Clear Skies Rick Tejera Editor SACnews, Public Outreach Coordinator Saguaro Astronomy Club Phoenix, Arizona www.saguaroastro.org saguaroas...@cox.net K7TEJ -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of George Henry Sent: Wednesday, September 22, 2010 17:17 To: amsat bb Subject: [amsat-bb] Re: Jan 09 sat passes Which begs the question, where can one find archived keps? AMSAT does not archive the KEPS mailing list, so unless someone on here is a subscriber and has keps bulletins from that far back, where else can you look? George, KA3HSW - Original Message - From: Nigel Gunn G8IFF/W8IFF ni...@ngunn.net To: amsat-bb@amsat.org Sent: Wednesday, September 22, 2010 10:15 AM Subject: [amsat-bb] Re: Jan 09 sat passes But did you use keps from that time period? Today's keps won't work. [snip] ___ 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: Jan 09 sat passes
At 10:16 AM 9/23/2010, George Henry wrote: Which begs the question, where can one find archived keps? AMSAT does not archive the KEPS mailing list, so unless someone on here is a subscriber and has keps bulletins from that far back, where else can you look? Aa a matter of fact, I have Keps going back several years, because I tend to archive my mail. Might be useful for historical studies like the one in this thread. 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
[amsat-bb] Re: Jan 09 sat passes
Hi! Which begs the question, where can one find archived keps? AMSAT does not archive the KEPS mailing list, so unless someone on here is a subscriber and has keps bulletins from that far back, where else can you look? Space Track also has archived keps. Log in, search by satellite number, then specify the date or date range instead of taking the latest set or the last 5 sets. Very useful for something like this. If you are interested in the AMSAT sets specifically, or don't want to sign up for a Space Track account, the weekly sets from the AMSAT KEPS list are archived since August 2006 when AMSAT moved to new mailing- list software. Go to: http://amsat.org/pipermail/keps/ 73! Patrick WD9EWK/VA7EWK http://www.wd9ewk.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
[amsat-bb] Re: Jan 09 sat passes
If someone needs them, I have keps from 2005 up to recent. I have ARRL keps starting with March of 2005 and Amsat starting with April of 2005. Regards, Reid, W4UPD George Henry wrote: Which begs the question, where can one find archived keps? AMSAT does not archive the KEPS mailing list, so unless someone on here is a subscriber and has keps bulletins from that far back, where else can you look? George, KA3HSW - Original Message - From: Nigel Gunn G8IFF/W8IFF ni...@ngunn.net To: amsat-bb@amsat.org Sent: Wednesday, September 22, 2010 10:15 AM Subject: [amsat-bb] Re: Jan 09 sat passes But did you use keps from that time period? Today's keps won't work. [snip] ___ 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] New Proposed Launch Date For Next Falcon 9
http://www.spacenews.com/launch/100922-spacex-targets-november-dragon.html The mission profile looks quite ambitious this time. The Dragon spacecraft is supposed to orbit, re-enter, and splash down. 73s Bernhard VA6BMJ @ DO33FL ___ 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: Antenna Opinions?
Hi Stan, No, it's for sure not an M2. The boom is about 9' or 10' long, and the driven element is a simple dipole. The reflector element in the back is split, with two dipoles, one above and one below the boom. Coax connector is at the rear of the boom. The pointiness of the antenna is not too bad. My rotor is good to 6 degrees (that's the clicker increment), and the one beacon I can barely hear way off in the distance can be heard +/- about 2 clicks. Greg KO6TH Date: Wed, 22 Sep 2010 08:50:05 -0400 From: stanw...@verizon.net To: amsat-bb@amsat.org Subject: [amsat-bb] Re: Antenna Opinions? M2 makes a 35 element 1296 MHz yagi, on about a 6' boom. individual elements are insulated thru the boom with keepers. Folded dipole driven element. I used 2 each stacked vertically for AO-40. Yes, they are pointy. Stan, W1LE Cape Cod FN41sr On 9/22/2010 1:52 AM, Art McBride wrote: Greg, I would keep the one that works the best. I have been disappointed in the performance of long boom Yagi's for UHF. Resistance loss in the elements often reduces the gain by several dB over calculated gain. Also they are very narrow band, the helix is good for an octave. Art, KC6UQH -- ___ 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: Antenna Opinions?
Hi Domenico, The length sounds about right (I didn't measure it, but it's longer than my garage 8 foot ceiling is high). But searching for pictures of the Tonna antenna, I'm not seeing one that matches. The Tonna antennas have a different mounting (a parallel bar below the boom), and elements above the boom, or so it seems. I have put some pictures of the mounting for this antenna, and the overall array: http://home.wavecable.com/~ko6th/dsc00319-800.jpg shows the mounting, and element style. There is another similar block of metal at the rear of the antenna; slightly smaller, but with the same type of pipe fittings going up and down. The PVC pipe mounting is mine. 1/2 pipe elbow, slathered with glue and tapped into place with a hammer. Seems to work. and http://home.wavecable.com/~ko6th/dsc00320-1024.jpg for the whole thing. You can barely see the back of the antenna in this image, with the split reflector. The coax cable is hooked to a 90-degree elbow, so that it hangs down without kinking (and so it can reach!). Left to right are a 2x15 element 70cm antenna (also unknown pedigree), 13cm BBQ dish, 23cm antenna, tower camera in box, and 8 element 2m antenna. The cross boom is a wooden closet pole, and yes, the weight of the dish is causing a bit of a sag... Hence my earlier thread about replacing it with a pair of flat panel Wi-Fi antennas. I haven't finished that project yet. If the gain is more like 20dBi (the seller claims 23), then the difference between my 18 turn helix and the 35 element yagi is even less. For satellite use, the helix probably wins because of the circular polarization. In terrestrial work, I lose 3db going circular to linear, so the net difference is going to be about 6dB. Not trivial, but not wow either. The helix is a lot smaller of an antenna, too, thinking of wind load and such. Greg KO6TH From: domenico.i8...@tin.it To: ko6th_g...@hotmail.com; amsat-bb@amsat.org Subject: Re: [amsat-bb] Antenna Opinions? Date: Wed, 22 Sep 2010 15:17:15 +0200 - Original Message - From: Greg D. ko6th_g...@hotmail.com To: amsat-bb@amsat.org Sent: Wednesday, September 22, 2010 7:03 AM Subject: [amsat-bb] Antenna Opinions? Hi folks, The Find was a 35 element 1296mHz antenna, well built and in excellent condition. Linearly polarized, horizontal; supposed to be 23dBi gain. Manufacturer, of course, is unknown. No markings, but it does not look home-built. By the mounting hardware, it looks like it was part of some sort of stacked array. Thanks, Greg KO6TH Hi Greg, KO6TH If your antenna is from Tonna it must be 3,07 meters long. Tonna make two models one for DX and SAT and the other one for ATV By the way the gain is 20 dB isotropic. 20635 35 ELEMENTI 1260/1300 MHz dx,sat 20 dB 3,07 meters long 20636 35 ELEMENTI 1250/1260 MHz ATV 20 dB 3,07 meters long 73 de i8CVS Domenico ___ 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
