FreeDV would probably work on the transponder birds if your doppler update was fast enough... it has built-in AFC. Your only chance to try it on an FM bird would probably be in the middle of the night...

George, KA3HSW


----- Original Message ----- From: "Paul Stoetzer" <[email protected]>
To: <[email protected]>
Sent: Monday, November 11, 2013 7:17 AM
Subject: [amsat-bb] Re: D STAR


An interesting idea would be trying a FreeDV QSO via satellite. I've made a
few QSOs with it on HF and it's an interesting mode.

Obviously it's full duty-cycle, so any attempts should be limited to just a
few tests, but I'm sure it would work.

73,

Paul, N8HM



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