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Re: LF: my results on VLF 05-08 May 2017

To: [email protected]
Subject: Re: LF: my results on VLF 05-08 May 2017
From: Paul Nicholson <[email protected]>
Date: Thu, 11 May 2017 07:02:07 +0000
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Alex wrote:

> I think I have only false decodes of
> {05 May 19:15 8270.1 4-char}
> http://rn3aus.narod.ru/ebnaut-8270-05may2017-1915z.zip

I got a successful genuine decode of the 4-char message
from Alex's file

 ebnaut06_MAY_0136_8270-1pps.wav

Eb/N0 = 0.0 dB, constant reference phase

carrier S/N: 13.62 dB in 31.2 uHz,
            -31.43 dB in 1Hz,
            -65.41 dB in 2.5kHz

The decode needed a time offset of +1001 seconds
which doesn't agree with difference between the WAV
timestamp and the start of the message.  Something
wrong with the clock at the RX site?

Alex, try the decode again,

 Symbols: 40.0
 Message length: 4
 Start offset: 1001
 List length: 100

Now I go look at the 2-char....
--
Paul Nicholson
--



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