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

from [Paul Nicholson] [Permanent Link][Original]
To: [email protected]
Subject: Re: VLF: EbNaut transmissions on lower frequencies?, pre-tests: 6.47kHz
From: Paul Nicholson <[email protected]>
Date: Tue, 1 Nov 2016 18:23:39 +0000
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Stefan wrote:

> f = 6470.00000 Hz
> Start time: 01.11.2016   07:00:00 UTC
> Symbol length: 40 s
> Characters: 3
> CRC 16
> Coding 16K25A
> Duration: 10h, 18m, 40s
> Antenna current: ~ 280 mA

Copied 'YES' at Eb/N0 = +5.7dB, BER = 35.6%

Constant reference phase.

Carrier S/N: 16.96 dB in 26.9 uHz.

About -63dB in 2.5kHz bandwidth after sferic
blanking.

I was expecting around +6.5dB based on the
daytime carrier measured on 10th October.

--
Paul Nicholson
--
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