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Re: VLF: Night-transmission on 8270.1 Hz

To: [email protected]
Subject: Re: VLF: Night-transmission on 8270.1 Hz
From: DK7FC <[email protected]>
Date: Mon, 21 Jan 2019 14:23:01 +0100
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Thanks Paul ,

Amazing, just amazing! With that signal level i could transfer my callsign over to you within 27 seconds.

73, Stefan

Am 20.01.2019 23:05, schrieb Paul Nicholson:
Stefan wrote:

> How many character could have been carried in these 130 minutes
> if an EbNaut message would have been transmitted?

Using:

 Coding: 16K19A
 Symbols: 0.06 seconds
 CRC: 7 bits
 Chars: 1350

The 7800 seconds of carrier decodes to 1350 *
with S/N 39.74dB in 128.2 uHz, Eb/N0 +0.9dB, rank 0.

 http://abelian.org/vlf/tmp/190119c.gif

Needs 32 Gbyte RAM to decode, and an update to ebnaut to
increase some buffer and array lengths.

--
Paul Nicholson
--


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