Hi Paul,
Hm, strange. Unfortunately the tree is shut down so i can't monitor /
decode my own signal daily.
So far i used this keying technique in every EbNaut transmission,
however i never used shorter symbol lengths than 20 seconds until now.
I'm trying to use Markus' new SpecLab settings for the signal generation
(thanks!) in the next transmission. But now, i keep the transmission
running a 9th time and longer, as long as needed.
Good that we didn't try the 75 char message directly...
73, Stefan
Am 30.11.2016 19:42, schrieb Paul Nicholson:
> f = 6470.00000 Hz
> Start time: 23.11.2016 08:00:00 UTC (Daily repetition)
> Symbol length: 12 s
> Characters: 40
> CRC 16
> Coding 8K19A
Eight repeats and no sign of a decode. I expected six repeats
would be enough.
> A phase turn of 180 deg is done by varying the frequency
> for a certain time
> PSK_Regelzeit.png
That would be significant I think. Perhaps it costs a dB or
two. I've tried some small time offsets. Perhaps I can
blank the symbol transition periods and just work with
say 8 seconds of each symbol. Something to try tomorrow.
--
Paul Nicholson
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