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Re: VLF: Night-transmission on 8270.1 Hz

from [Paul Nicholson] [Permanent Link][Original]
To: [email protected]
Subject: Re: VLF: Night-transmission on 8270.1 Hz
From: Paul Nicholson <[email protected]>
Date: Sun, 20 Jan 2019 22:05:03 +0000
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User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 
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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