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Re: VLF: EbNaut transmissions on lower frequencies?, pre-tests: 6.47kHz

To: [email protected]
Subject: Re: VLF: EbNaut transmissions on lower frequencies?, pre-tests: 6.47kHz
From: Paul Nicholson <[email protected]>
Date: Tue, 22 Nov 2016 15:32:47 +0000
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Stefan wrote:

> Tomorrow, [18th Nov] 6 UTC, a carrier starts on 6470.005 Hz,
> taking 48 hours.

Received in Todmorden.

Daytime 18th: 13.9 dB in 34.7uHz, -64.6 dB in 2500Hz
Daytime 19th:  8.0 dB in 34.7uHz, -70.6 dB in 2500Hz

Nighttime S/N was too weak to measure reliably.

Overall: 16.04 dB in 5.79uHz, -70.3 dB in 2500Hz

Overall after adjusting for 30 deg day/night shift:
         16.54 dB in 5.79uHz, -69.8 dB in 2500Hz

Best decode of the 48 hour carrier:

16K25A 90 second symbols, 13 chars at Eb/N0 = -0.4dB  BER 40.3%

--
Paul Nicholson
--

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