Hi All,
I read all the replies and have to agree with John, AA5AG. Unless the pass is real low to the east or west, I always get AOS at 436.804, then track down in frequency. My LOS is around 436.785, if your fixed in 5kc increments (no vfo), program or move from 436.805, 436.800, 436.795, 436.790 and 436.785. The 436.795 frequency is the center frequency before doppler comes into play.
Hope this helps,
Rick WA4NVM
I start at 436.805 which seems about right for the doppler shift at the beginning of the pass.
73s John AA5JG
--- On Sun, 4/25/10, Greg D. ko6th_greg@hotmail.com wrote:
From: Greg D. ko6th_greg@hotmail.com Subject: [amsat-bb] Re: AO 27 ? To: k7trkradio@charter.net, amsat-bb@amsat.org Date: Sunday, April 25, 2010, 12:52 PM
I find that 436.795 works best for me. But it's an FM downlink (so you have the capture effect on your side), you've got Doppler to deal with, and every rig is different anyway. So I'd advise that you just play with it a bit and see what's best for you. Either one is a reasonable starting point.
Greg KO6TH
From: k7trkradio@charter.net To: amsat-bb@amsat.org Date: Sun, 25 Apr 2010 10:06:22 -0700 Subject: [amsat-bb] AO 27 ?
AMSAT shows downlink at 436.795
AO27 site shows downlink at 436.797
What is the correct frequency?
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