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Re: VLF: EbNaut transmission on 8270.1 Hz

To: [email protected]
Subject: Re: VLF: EbNaut transmission on 8270.1 Hz
From: Roland Bruestle <[email protected]>
Date: Mon, 25 Apr 2016 20:04:06 +0200
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Hi Paul,  Stefan
I hope i have solved the problem. The antenna current with 332mA was to much. The Amplifier switched off. Now I am using 240mA.
and try again. Transmission was running the last 2 hours, almost all the time which 320mA.

Am 25.04.2016 um 19:32 schrieb DK7FC:
Hi Paul, VLF,

Wonderful! I like the long messages. The next one will be even longer.
You may have noticed that there was an 'issue' again with my system. This time the power supply collapsed :-) But the PA is my own construction and so i would understand and know how to repair it!
Will repair the supply now an d then back on air. Message announcement will follow.

Ah and i ordered 2 feed-through ceramic isolators from ebay lat night ( ).
Hopefully the creepage distance is high enough :-)

73, Stefan

Am 25.04.2016 10:27, schrieb Paul Nicholson:

Stefan wrote:

> f = 8270.1 Hz
> start 24.04.2016 20:10:02
> coding 8K19A
> CRC 16
> period 30
> length 7

Another success.

Copied 'DREAMER' at rank 3,  Eb/N0 = +0.8,  BER 34.5%, constant
reference phase.   Signal averages 16.04 dB in 54.8 uHz.

A good result, considering the overnight noise.

Paul Nicholson

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