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Re: VLF: today on the 46km band...

To: [email protected]
Subject: Re: VLF: today on the 46km band...
From: Paul Nicholson <[email protected]>
Date: Mon, 8 May 2017 05:21:00 +0000
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Stefan wrote:

> f = 6470.100000 Hz
> Start time: 07.May.2017   05:10:00 UTC
> Symbol period: 15 s
> Characters: 75
> CRC bits: 2
> Coding: 8K19A
> Duration: 15h, 40m, 0s

A nice decode of 75 chars here,

 constant reference phase
 carrier phase: -137.8
 carrier Eb/N0: -2.9 dB
 carrier Es/N0: -12.35 dB
 carrier S/N: 23.41 dB in 17.7 uHz,
             -24.11 dB in 1Hz,
             -58.09 dB in 2.5kHz

BER was 30.2% which corresponds to Eb/N0 = +0.8 dB.  The
low carrier Eb/N0 measurement suggests some other signal
is within the 20Hz passband that I fed into the decoder.

Paul Nicholson

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