Thanks Paul for not giving up! You're doing a great work up there.
I still have to wait for the first txt file (90% now) that contains my
signal so i can run it into the decoder. Then i will see if i do get
just nonsense decodes.
If it helps, i can tell you the content of the last two 15 char
transmissions but this means to give up.
Attached is an image from my grabber showing the 180 deg phase switch as
received on the tree. It looks quite good, i can't find any anomalities.
Soon more.
73, Stefan
Am 12.10.2016 21:35, schrieb Paul Nicholson:
> f = 6470.00000 Hz
> Start time: 12.10.2016 14:30:00 UTC
> Symbol length: 40 s
> Characters: 3
> CRC 16
> Coding 8K19A
No decode, just a false hit ' WV' at Eb/N0 = -0.7.
Strange. According to carrier measurements this should
be an easy decode at around +3db.
More carrier measurements: night signal phase lags daytime
by 60 degrees. Night amplitude is about 0.1 fT.
The 16K25A 15 char 140 second message should decode at
about Eb/N0 +6dB. So far no improvement on the partial
decodes, next to try is correcting for that 60 deg diurnal.
--
Paul Nicholson
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wald3.jpg
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