...and of course there is no reason NOT to adjust the lower frequency especially if it is computer controlled. It's just that lower frequencies do not change as much for a given satellite speed (see JoAnne's Doppler equation to determine why :-). And as someone said, the FM capture effect makes it even less important.
On Thu, Jun 6, 2019 at 12:01 PM JoAnne K9JKM via AMSAT-BB < amsat-bb@amsat.org> wrote:
If 70cm is the UPlink, you'll adjust your transmit frequency UPward
through
the pass. If 70cm is the DOWNlink, you'll adjust your receive frequency DOWNward through the pass.
I showed a quick slide with the Doppler equation on it ... that delta-lambda stuff. Then I told them pretty much what you said ... and I could hear a "Phew!" from the audience.
-- 73 de JoAnne K9JKM k9jkm@amsat.org
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