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Re: LF: More EbNaut 137.777 - TA slot

To: [email protected]
Subject: Re: LF: More EbNaut 137.777 - TA slot
From: Paul Nicholson <[email protected]>
Date: Sat, 05 Dec 2015 17:32:03 +0000
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The 15:00 message

 found rank 0: VO1NA  ps [  2   30   30   30   30]
 re-encode 389/1056 ber 3.68e-01  Es/N0=-12.4 Eb/N0=3.1

but I had to use a frequency offset.

This time the signal was too weak to see the symbols
but knowing the message I could reverse the modulation
to get the carrier, then measure its frequency.  The
spectrum peaked at -256 uHz and this offset in the decoder
gave an easy decode.   Without the offset - nothing, so
this couldn't have been decoded without already knowing
the message.

--
Paul Nicholson
--

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