28 Apr
2008
28 Apr
'08
2:54 a.m.
On Apr 27, 2008, at 17:49:32, Andrew Glasbrenner wrote:
Let me suggest that for the first couple of orbits you forego the automatic Doppler tuning and just tune the +/- 3 kHz by hand. You'll have a much greater possibility of success. Frequencies may not be stable or exactly as published, and keplerian elements are an educated guess at this stage. Predictive Doppler tuning is a recipe for failure until those parameters stabilize. On the other hand, if you have a TNC or program with Costas loop tuning for the 1200 baud BPSK, you are a step ahead.
Just a bit of advice, take it or leave it.
That sounds good; I'll use the R1500 and tune manually. I hope the pitch changes in the recorded audio don't prevent it from being decoded.
--
Rick