Andy wrote:
> if the signal wason air just for that period
> of eight hours, then the accuracy can only ever
> be stated / measured to the nearest 0.000035Hz
Depends on the available S/N. Give me half a cycle
and you can have 20 digits... if the S/N is high enough.
Stefan wrote:
> Can you confirm you were on air at
> 8270.000000000000000000000 Hz
From 02:00 to 05:00 the average frequency
was 8269.9999992 Hz +/- 0.1uHz.
Uwe wrote:
> so no decode, Paul?
No decode. The signal was strong enough, so I guess
something upset the phase. The carrier after the
message was ok.
Jacek wrote:
> (see attached spectrogram).
You're not using vttime to correct for the soundcard
frequency offset and drift. You need to put a shaped
pulse-per-second into the 2nd channel of your soundcard,
which vttime will use to resample the signal to an
exact rate.
--
Paul Nicholson
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