Return to KLUBNL.PL main page

[Top] [All Lists]

Re: VLF: 8270 March 26/27

To: [email protected]
Subject: Re: VLF: 8270 March 26/27
From: Paul Nicholson <[email protected]>
Date: Fri, 01 Apr 2016 11:40:14 +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]om> <[email protected]>
Reply-to: [email protected]
Sender: [email protected]
User-agent: Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/20130329 Thunderbird/17.0.5
I ran about four hours of Roland's 8270Hz carrier into the EbNaut
decoder and got ** with 38 second symbols at Eb/N0 = +1.5 dB
with phase pattern 90 90 60 60 - quite an easy decode.

It even decoded *** with 35 second symbols at Eb/N0 = -2.3 dB,
a genuine decode because there was no false decode with higher
path metric.  Phase was 120 90 90 60.

Those phase patterns say the frequency was a smidgen low, perhaps
due to Doppler.

So, EbNaut messages possible using 1uW over 1Mm exploiting a
two electron signal.

Paul Nicholson

<Prev in Thread] Current Thread [Next in Thread>
  • Re: VLF: 8270 March 26/27, Paul Nicholson <=