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Re: LF: EbNaut 137.477 kHz 1 Dec

from [Domenico IZ7SLZ] [Permanent Link][Original]
To: "[email protected]" <[email protected]>
Subject: Re: LF: EbNaut 137.477 kHz 1 Dec
From: Domenico IZ7SLZ <[email protected]>
Date: Sat, 3 Dec 2016 20:36:25 +0100
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GE Paul and all,

unsuccessfull wavs are uploaded in the same folder.
Thanks in advance for your analisys;  hope to catch some more decodes.

73 and good weekend all.
Domenico, iz7slz

On 3 December 2016 at 17:20, Paul Nicholson <[email protected]> wrote:

Nice work Joe and Domenico.  Thanks for linking the wav files,
I downloaded and reproduced the three decodes using the Linux
decoder to get exactly the same results.

I wanted to see if normalising for amplitude variation made
any difference with the LF signals.

It didn't, the background noise is very constant so there is
negligible normalisation effect.

> not bad for a message of 63 characters on LF sent in less
> than 30 minutes !

 The 02:00 decode: -39.6dB in audio bandwidth, 2.3 characters
per minute, 62% of channel capacity.

Domenico, if you want to upload the unsuccessful wavs, I can
check them to see how far short of a decode they were.

--
Paul Nicholson
--


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