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Re: VLF: 300 mA on 6470 Hz

To: rsgb_lf_group@blacksheep.org
Subject: Re: VLF: 300 mA on 6470 Hz
From: Paul Nicholson <vlf0403@abelian.org>
Date: Thu, 12 Oct 2017 06:36:16 +0000
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References: <15ec7c794b3-bff-66@webjas-vac136.srv.aolmail.net> <alpine.DEB.2.11.1710022138560.734@mailn.lipkowski.org> <59D2BD65.4080909@posteo.de> <59D4B109.27652.1415B4FA@mike.dennison.ntlworld.com> <7737095b-edc9-8b5f-ebf5-2a6b2884d425@abelian.org> <ffe7e282-b039-8ad6-f1da-400b64131a98@abelian.org> <aac1062e-eadd-c7c8-0ecc-efac0ff94363@abelian.org> <59D7940D.7080102@posteo.de> <f3db3efe-7c22-90f2-d6cf-ad853de9fb48@abelian.org> <59DA4E78.7020804@posteo.de> <25d84b3d-2077-a3dc-426c-3f9b92940205@abelian.org> <59DB730D.4080803@posteo.de>
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Stefan wrote:

> f = 6470.100000 Hz
> Start time: 05.October.2017  16:00:00 UTC (daily)
> Symbol period: 20 s
> Characters: 16
> CRC bits: 19
> Coding 16K21A
> Duration: 12h

Here's the full set of overnight transmissions:

 5th/6th   Eb/N0 -2.2 dB  phase -148.4 deg
 6th/7th   Eb/N0 +0.9 dB  phase -165.4 deg
 7th/8th   Eb/N0 -0.5 dB  phase -163.1 deg
 8th/9th   Eb/N0 -4.4 dB  phase -150.2 deg
 9th/10th  Eb/N0 -2.9 dB  phase -146.5 deg
 10th/11th Eb/N0 -3.1 dB  phase -158.8 deg
 11th/12th Eb/N0 -3.5 dB  phase -157.1 deg

 Stacked: Eb/N0 6.3 dB  phase -156.6 deg

Looks like we were lucky with the signal 6/7th.

--
Paul Nicholson
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