Re: LF: Topband Test

To:	[email protected]
Subject:	Re: LF: Topband Test
From:	Andy Talbot <[email protected]>
Date:	Thu, 3 Mar 2011 19:14:49 +0000
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See the article on Dopplergrams published by G3PLX in Radcom some time around 1998 - 2000. (No record of teh exact publication date). Many plots of low-HF carriers splitting into two.

We had to use a separate DSP card to do narrow band monitoring in those days

Andy

www.g4jnt.com

On 3 March 2011 18:55, Chris <[email protected]> wrote:

Hi All,

Yesterday evening Pete, M0FMT, transmitted QRSS on topband for a test. An unexpected effect was noticed with the trace splitting in two. Nothing new or 'earth shattering' I expect, but new to us and worthy of further experimentation.

See the result and conclusion on my website http://qsl.net/g4ayt on the bottom of page 1.

I have never seen this effect on 137, even with quite strong audible signals, maybe others have.

Vy 73,

Chris, G4AYT, Whitstable, UK.

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