Message-ID: <56956238.4070501@abelian.org>
Date: Tue, 12 Jan 2016 20:29:44 +0000
From: Paul Nicholson <vlf0403@abelian.org>
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Subject: Re: LF: 8270Hz
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Uwe wrote:

 > Carrier on: 2016-01-09 17:00:00
 > Message start: 2016-01-09 17:05:00
 > Coding 8K19A
 > Duration 02:37:52:00
 > Chars 10
 > Bits 1184
 > Period 8,0

That should be 19 chars.

I spent 3 days trying to decode, but without success.
The following carrier measures 16.4 dB in 1 hour and
that should give me Eb/N0 around 0.1 dB which has a good
chance of decoding.   But for some reason it doesn't
decode.   Maybe the signal was a dB or so weaker than the
following carrier.  It must have been very close to the
limit.  Or perhaps the symbol timing is a bit out.

Also I used all of your recent long carrier transmissions,

  2015-12-30_00,+6h
  2015-12-30_20,+11h
  2016-01-01_00,+7h
  2016-01-05_00,+7h
  2016-01-06_00,+7h
  2016-01-09_20,+11h

and tried a 49 hour integration, non-coherent in 278 uHz,
using signal recorded by Mike Smith at Forest Virginia,
but nothing showed above noise.  The west-to-east path
is going to be a tough nut to crack, especially across
6667 km.

Mike is contemplating building a loop receiver similar to
mine which will help by maybe 6dB or more.

Really, someone should be looking for this carrier in
Canada or Newfoundland.  That has a much better chance.

--
Paul Nicholson
--