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Re: VLF: 300 mA on 8270 Hz

To: [email protected]
Subject: Re: VLF: 300 mA on 8270 Hz
From: Paul Nicholson <[email protected]>
Date: Sat, 30 Sep 2017 19:59:22 +0000
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Stefan wrote:

> f = 8270.005000 Hz
> Start time: 27.September.2017  06:00:00 UTC (daily)
> Symbol period: 8 s
> Characters: 100
> CRC bits: 16
> Coding 8K19A

Decoded

 "NIEMAND IST MEHR SKLAVE, ALS DER SICH FUER FREI HAELT,
  OHNE ES ZU SEIN. _ JOHANN WOLFGANG VON GOETHE"

List rank 0, Eb/N0 = +0.7 dB with four days stacked.
I used a 'known phase' decode, using the average phase 136.8 deg
of the recent 16K21A 12 char messages.

It would not decode from the first 3 days, even up to list length
of 23e6 which is the largest my workstation will do.

I'll start a uniform phase decode to see if I can improve the
decode.

--
Paul Nicholson
--

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