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Re: VLF: Back on 5.17 kHz / 58 km...

To: [email protected]
Subject: Re: VLF: Back on 5.17 kHz / 58 km...
From: Paul Nicholson <[email protected]>
Date: Sat, 7 Jan 2017 04:09:23 +0000
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Decoded '73 DK7FC' from Cumiana (Renato Romero, vlf15, 504.6km)
with constant ref phase, Eb/N0 = 0.6, S/N 16.16 dB in 11.8 uHz,
-67dB in 2.5kHz.

Very strong at Bielefeld (Wolf Buescher, vlf6, 303.8km)
Eb/N0 11.6dB, 27.17 dB in 11.8 uHz, -56.1dB in 2.5kHz,
constant reference phase.

Here, improved my decode to 3.9dB when I remembered to use the
-a option which normalises the amplitude by the average noise.

I am not seeing much day/night phase shift at any site.  Some
measurements on the carrier will be the next job.

Paul Nicholson

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