November 2008 - AMSAT-BB - mailman.amsat.org

Ao16 is kicking
by Jim Danehy 23 Nov '08

23 Nov '08

I have to second the expressed opinions about the AO16 operation . . . there is a connection between AO16 and good operating techniques . . . could opine why but no need to do that . . . those that frequent that satellite really are the best ops I have come across in the satellite game . . . a pleasant experience with those guys on all of the birds . . . . Jim W9VNE

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AO16 is KICKING. 2030 UTC pass on 22 NOV
by Mark Lunday, WD4ELG 22 Nov '08

22 Nov '08

Three new QSO's in three minutes today: WA4NVM (Anderson), KC9ELU (Mike), WB2OQQ (Pete). All three gentlemen (and several others I heard after I was done), were polite, did not transmit on top of each other, and exhibited outstanding comms discipline. Sure taught this newcomer to AMSAT some good examples of how to work the bird like a professional! Thanks, OM's! Also, nice to see the old bird working FB! Mark Lunday WD4ELG wd4elg(a)arrl.net http://wd4elg.net

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UISS, GO-32 & 9600pbs
by John Hackett 22 Nov '08

22 Nov '08

Hello Nader, I was extreenly interested in your discovery that the UISS program decodes 9600 bps from GO-32 - (and AO-51). I lost interested in packet radio in 1990 when I moved to Frei Island. >From myQTH, surrounded by mountains, it was nigh on impossible to work the Pacsats in LEO and of course (for the same reason) the ISS was a non-starter for me, 'm too far north. However, I just checked - and I see that GO-32 'is' workable from my QTH occasionally. I know how to modify rigs for 9600 bps but my question is ... Is it possible to make some sort of relatively simple tuning indicator for 9600bps ??. Tone decoder, centre meter, LED's, old 1 inch tube type RTTY indicator, comparator system ... I can't find any information on the net. 1200 bps is easy but I believe 9600 bps is a different matter - (I am of course showing my digital ignorance here). Do you have any references to any circuit diagrams Nader ??. I know you can't actually *hear* 9600bps modulation, hence my request for an 'indicator'. I believe one way is that the white (background) noise goes quiet when 9600bps is being received. Confirmation - (or strong denials) - of this would be appreciated from the digital experts among us. Any advice, tips, references or relavant URL's would be greatly appreciated. to recap ... I'm looking for some sort of 'INDICATOR' for 9600bps signals ... (if it's possible). 73 John. <la2qaa(a)amsat.org>

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Satellites 9k6 with Soundcard
by nader omer 22 Nov '08

22 Nov '08

I succeded to decoded the AO-51 TLM and GO-32 TLM using UISS and AGWPE softwares with soundcard . 9k6 bps seem works fine with soundcard ! some where I have read ,It is impossible to decode 9k6 by soundcard ! but it seem ok with my RX experment from sat. And in shack TX experement was ok between 2 setup using a soundcard at one end and on the other end a TNC at 9k6 speed. for more info and snapshot see my weblink http://www.st2nh.com/satellites I wish if some one add a module to UISS for pacsat . so we can work PACSAT with soundcard!! Or if WISP work under AGWPE we can use soundcard for pacsat. 73 DE Nader , ST2NH www.st2nh.com

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Transcr Question
by D. Mynatt 22 Nov '08

22 Nov '08

Hi group, I still struggling through selecting a radio for 2m and 70cm satellite work. I already have a G-5500 and a 2m and 432 antenna from M-Squared, and the computer interface, and pre-amps. I'm thinking I'm starting okay but now the hard part -the Radio. A friend has a Yaesu FT-7800 unit he wants to sell me. I'm all atwitter thinking that two radios, one for each band, is better than one and need some insight. I can get some older ICOMs (471A and 271A) and was wondering what the group thought of (1) two radios versus one; (2) the Yaesu FT-7800; and (3) the ICOM 471 and 271 as my base station. I'm thinking I'll need CAT and I'm not sure the FT has it. What is one to do? Advice solicited! Dave/KA0SWT

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Re: Predict Voice Announcements?
by Alan Sieg WB5RMG 22 Nov '08

22 Nov '08

Scott sed: > Anyone have any problems with the voice announcements with the Predict > program? If I understand correctly, if you use an uppercase "T" command, you > will get voice announcements periodically. Doesn't seem to want to work > here, am I missing something? No big deal, just curious! Hummm, Guess I've been away a while also. Would this be the same 'predict' program I had set up many years ago on a linux webserver to generate pass predictions on demand ? Perhaps it has been updated to also do sound... Could have some interesting possibilities... Or maybe there is a Windows version these days ? "Only slightly more advanced then 'clueless'" ... /;^) -- <- WB5RMG is Alan Sieg * http://wb5rmg.somenet.net ->

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Re: TH-D7g Duplex operation question
by Henk, PA3GUO 22 Nov '08

22 Nov '08

Hi ! The 'D' indicates which band is selected for DATA (eg APRS), ... and has nothing to do with duplex mode :-) Regarding duplex: when you press duplex then the THD7 is immediately into duplex mode, eg band A 145.920 and band B 435.300 Mhz. Select band A (a/b) if you want to transmit on A. Select band B (a/b) if you want to transmit on B. While you transmit on A, you still hear sound, coming from band B. This way you can hear yourself back via eg AO51. (you may need either external mic or a headphone in this set-up) If you go to http://www.pa3guo.com, click on OTHERS in topmenu and then DOWNLOADS in left menu you get sat-memories for the THD7 which you can quickly donwload via a PC into the THD7. Success ! Henk, PA3GUO http://www.pa3guo.com

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TH-D7g Duplex operation question
by Jeff Yanko 22 Nov '08

22 Nov '08

Hi all! I bought this HT a few months ago and still trying to find the time to operate it! :) I have a question about the full duplex operation. From reading the manual, it describes how to set up the duplex operation. However, it doesn't describe how to set it up on crossband operation, 144/430. When I want to operate on AO-51 using the 144 up / 430 down setup, which band does the duplex occur, where the "D" is inserted next to the frequency? 144 or 430? 73, Jeff WB3JFS

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Re: Transcr Question
by w7lrd＠comcast.net 22 Nov '08

22 Nov '08

Hi Dave- I have used an IC 471A and a IC 251A for years. The only issue is with the older Icoms you need an outboard preamp for the mic and I don't believe they can interface for doppler, at least I never tried. They can be had very reasonably. 73 Bob W7LRD -- "if this were easy, everyone would be doing it" -------------- Original message -------------- From: "D. Mynatt" <dave(a)mynatt.biz> > Hi group, I still struggling through selecting a radio for 2m and 70cm > satellite work. I already have a G-5500 and a 2m and 432 antenna from M-Squared, > and the computer interface, and pre-amps. I'm thinking I'm starting okay but > now the hard part -the Radio. > > A friend has a Yaesu FT-7800 unit he wants to sell me. I'm all atwitter > thinking that two radios, one for each band, is better than one and need some > insight. > > I can get some older ICOMs (471A and 271A) and was wondering what the group > thought of (1) two radios versus one; (2) the Yaesu FT-7800; and (3) the ICOM > 471 and 271 as my base station. > > I'm thinking I'll need CAT and I'm not sure the FT has it. > > What is one to do? Advice solicited! > > Dave/KA0SWT > _______________________________________________ > Sent via AMSAT-BB(a)amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb

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K8YSE @ DM51 on AO-51 - 0130 UTC, 22 November
by Patrick STODDARD (WD9EWK/VA7EWK) 21 Nov '08

21 Nov '08

Hi! I just spoke with John K8YSE. He is currently in southeastern Arizona, and will head to a point around Bisbee in grid DM51 for one pass tonight (22 November, on the UTC clock). Look for K8YSE on the 0130 UTC AO-51 pass, which should cover most of North America. Good luck, and 73! Patrick WD9EWK/VA7EWK http://www.wd9ewk.net/

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