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Re: VLF: EbNaut on 2 frequencies

To: [email protected]
Subject: Re: VLF: EbNaut on 2 frequencies
From: Paul Nicholson <[email protected]>
Date: Tue, 17 Oct 2017 09:14:27 +0000
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Stefan wrote:

> will restart with 30 seconds symbol length at 20:30 UTC

6430.005000 copied '3T' at +0.3 dB;
6510.005000 copied '73' at -1.8 dB;

> Do you exclude local QRM of the individual frequencies?

Spectrum during the 13:00 test

 http://abelian.org/vlf/tmp/171017a.gif

and during the 20:30 test

 http://abelian.org/vlf/tmp/171017b.gif

The background noise doesn't seem too different at the two
frequencies.  No strong interfering signals in the signal
bandwidths, the 129th mains harmonic is weak and fairly well
spread out.

--
Paul Nicholson
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