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Re: VLF: EbNaut transmissions on lower frequencies?, pre-tests: 6.47kHz

To: [email protected]
Subject: Re: VLF: EbNaut transmissions on lower frequencies?, pre-tests: 6.47kHz
From: Paul Nicholson <[email protected]>
Date: Sun, 15 May 2016 16:50:54 +0000
In-reply-to: <[email protected]>
References: <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]>
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User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0
Stefan wrote:

> f = 6470.00000 Hz
> Start time: 14.05.2016   21:40:02 UTC
> Symbol length: 100 s
> Characters: 6
> CRC 16
> Coding 8K19A

An easy decode of 'JN49IK' with Eb/N0 = +3.8 dB.

Phase pattern: 30   30    0    0

Carrier S/N: 16.96 dB in 17.9 uHz

Symbol errors: http://abelian.org/vlf/tmp/160514a.gif

>  the same message

Now I know the message I can reverse the modulation of
the previous attempt to see why it didn't decode.

--
Paul Nicholson
--

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