Hello Colin, Thanks so much for the information. I am sure it has something to do with the frequency turning. Next time the bbs in up, I will try it again.
As for the deviation, I have use this same rig and tnc with GO-32 and AO-51 when it was in V/U mode. The deviation seems to be fine. I will listen again and verify this with my HT. Service monitor is not available. Lost it in Katrina. I really miss using the bbs. Love to download the pictures and talking with friends around the world. Anyhow, thanks again for the tips. 73 Angelo ----- Original Message ----- From: "Colin Hurst" <[email protected]> To: <[email protected]> Cc: "Angelo Glorioso" <[email protected]>; "Andrew Glasbrenner" <[email protected]> Sent: Friday, February 19, 2010 6:36 PM Subject: RE: [amsat-bb] Re: New Control Software > Angelo, > Further to Drew's comments I would confirm the 1268.703 uplink. > One further hint besides deviation and frequency, is to set the TXDelay to > 1000 milliseconds. > This will ensure all the switches or relays in the system have settled > prior to issuing the uplink packet. > If you find this to be the "issue", reduce the TXDelay in 50 or 100 > milli-second increments till you have reliable acks. > > When AO-51 was flipped and favoured the Southern Hemisphere I was able to > get acks from horizon to horizon and rarely did it double request. I use > 25 > watts output via about 12 metres of 5/8 inch hard-line to a 15 turn > helical. > With your system you should do just fine. > > The other issue that Drew commented on was deviation. > In the absence of test gear, a method I have used, is to listen to the > audio level on the downlink, then preferably compare your TX signal level > in the same Transceiver, but a separate RX will suffice. It will be very > apparent if you are under or over deviating. > Not very scientific, but when you have limited test gear, its a way > forward. > 73 > Colin VK5HI. > >> -----Original Message----- >> From: [email protected] [mailto:[email protected]]on >> Behalf Of Angelo Glorioso >> Sent: Friday, 19 February 2010 14:07 >> To: Andrew Glasbrenner >> Cc: AMSATBBS >> Subject: [amsat-bb] Re: New Control Software >> >> >> I appreciate the helpful hints. I will try it again once it comes back >> up on 1.2. >> >> Again, thanks for all your efforts in keeping AO-51 one of the leading >> satellites to use. >> >> My hat off to you!! :-) >> >> >> ----- Original Message ----- >> From: "Andrew Glasbrenner" <[email protected]> >> To: "Angelo Glorioso" <[email protected]> >> Cc: "AMSATBBS" <[email protected]> >> Sent: Thursday, February 18, 2010 9:28 PM >> Subject: Re: [amsat-bb] New Control Software >> >> >> > Angelo Glorioso wrote: >> >> >> >> I see! As for low usage of the BBS, well, most of the folks that used >> >> GO-32 >> >> either don't have 1.2g or have not been able to get into the >> AO-51 BBS >> >> at all >> >> since the new configuration was put in place. I have been unable to >> >> use AO-51 BBS with >> >> a 70 watts brick on 1.2g, a directives system 23 cm RHCP 12 >> turn helix >> >> 14.5 dBic gain, >> >> 1/4 inch heliax coaxial cable after many days of trying. I can into >> >> AO-51 using voice with >> >> no problem. I know the frequency is a little off and have tried >> >> adjusting but no luck. >> >> >> >> I just wonder if the BBS was in V/U mode how many more users would >> >> show up. >> >> Can a schedule mode be requested for the BBS for V/U??? >> >> >> >> Oh well, as you said, it is a low priority. >> >> >> > V/U BBS was discontinued because it interfered with control of the >> > satellite, so no, we won't be scheduling it without the >> upgrade even if >> > requested. We have many L/U users on several continents, but it does >> > require a very good station. The equipment you describe should be >> > adequate...it's similar to what I use. The deviation and frequency is >> > very important to be successful. My uplink is about 3 khz high than >> > listed. Since you have an excellent L/U analog uplink, I'm >> confident the >> > devil is in the details with your digital setup. >> > >> > We've had a lot of other challenges to keep AO-51 running and healthy >> > this year and last. I'm sorry if you don't agree with our >> priorities. I >> > was working on a more comprehensive explanation to the separate >> > identical email you sent this morning. You'll have to excuse >> me if I was >> > a little kurt in my answer after you pressed the question via -bb. >> > >> > 73, Drew KO4MA >> > >> _______________________________________________ >> Sent via [email protected]. Opinions expressed are those of 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 [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
