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Re: VLF: EbNaut 8270.033333 Hz Saturday

from [Paul Nicholson] [Permanent Link][Original]
To: [email protected]
Subject: Re: VLF: EbNaut 8270.033333 Hz Saturday
From: Paul Nicholson <[email protected]>
Date: Sun, 12 Mar 2017 20:34:10 +0000
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I fixed a problem with the sferic blanker.

Markus wrote:

> Frequency: 8270.0333333 Hz,
> 5 characters, 8K19A, 16 bit CRC,
> 5 s symbols,
> start Saturday 2017-03-11 10:00 UT , end 10:42:40

Now decodes 'DF6NM' with Eb/N0 = +1.0 dB,
carrier 15.53 dB in 390.6 uHz

> ...will be repeated 13:00 to 13:42:40.

The 13:42:40 now decodes too,  Eb/N0 = +1.2dB
carrier 15.79 dB in 390.6 uHz.

Both with constant phase.

> Frequency: 8270.0333333 Hz,
> 5 characters, 8K19A, 16 bit CRC,
> 60 s symbols,
> start Saturday 2017-03-11 22:00, end Sunday 06:32 UT

The overnight message came in at Eb/N0 +1.7dB
and carrier S/N 16.22 dB in 32.6 uHz, constant
reference phase.

--
Paul Nicholson
--
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