Return to KLUBNL.PL main page

rsgb_lf_group
[Top] [All Lists]

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
Dkim-signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=abelian.org ; s=default; h=Content-Transfer-Encoding:Content-Type:In-Reply-To: MIME-Version:Date:Message-ID:From:References:To:Subject:Sender:Reply-To:Cc: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=cM4+9F0AQ9EcM1rNHFNNnAWT1WNK+qnx+tphh6Qfj2s=; b=s28eFhq9ZT/j9yerUnHy9kICk/ nJBhEHIbvkV2W/1/tMqI198cNcl5PRGcbRxYd7dfYijCo+2uOb8vBOjgUOc/QT+g+cjyQ3WwRTl1F 4CFECcffLbFUgh18TXBdKGANnm1qlzSJ0X3Sq/tgdYAE84xklOPGusUJz5fsRi0nruZY=;
In-reply-to: <[email protected]>
References: <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]>
Reply-to: [email protected]
Sender: [email protected]
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.5.1

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
--

<Prev in Thread] Current Thread [Next in Thread>