Greg,
Thanks for this reply. It's nice to know that even the highest of currently-in-use satellite frequencies are do-able without computer aid. I'm pleased to hear that, and will rethink my position on things above 70 cm.
To Joe and Bruce - Here, I have noticed particular challenges with VO-52, whose Doppler tends to move more quickly near mid-pass than the computer and software routinely seem able to keep up with. The Mode J satellites and AO-7 Mode B haven't really been too troublesome. At the end of the day, however, tuning manually remains a very viable option for any of us, in my opinion.
73 to all,
Tim - N3TL
________________________________ From: Greg D. ko6th_greg@hotmail.com To: n3tl@bellsouth.net; apbiddle@mailaps.org; jbelstner@yahoo.com; amsat-bb@amsat.org Sent: Tue, June 1, 2010 12:36:55 AM Subject: [amsat-bb] Re: Doppler Tuning Convention Question
From: n3tl@bellsouth.net To: APBIDDLE@mailaps.org; jbelstner@yahoo.com; amsat-bb@amsat.org Date: Mon, 31 May 2010 21:42:09 -0400 Subject: [amsat-bb] Re: Doppler Tuning Convention Question
Alan, I have no doubt that you're right about the necessity for Doppler control above Mode B satellites. Having always preferred the KISS approach whenever possible, I suppose that's why I haven't been able to get myself very excited for L- and S-band opportunities. I definitely enjoy the benefits of computer control for Doppler. I just don't much care for having no choice in using it (or not) to effectively work a satellite.
73 to all,
Tim - N3TL
Actually, I've been running 2.4 ghz manually since AO-40, and really haven't had that much trouble. Just keep spinning the dial. Also, having an older rig (736r), I don't bother with computer control when on the linear birds. I do relax under full computer control for FM up through L-band, but there's still something satisfying about manual tuning.
Greg KO6TH
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