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Re: LF: Topband Test

from [Andy Talbot] [Permanent Link][Original]
To: [email protected]
Subject: Re: LF: Topband Test
From: Andy Talbot <[email protected]>
Date: Thu, 3 Mar 2011 19:22:30 +0000
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May 1998, according to the RSGB Indexes...
'JNT


 
On 3 March 2011 19:14, Andy Talbot <[email protected]> wrote:
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


 
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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