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References: <6C9E0C3D501744C99E11539B7AFCB120@IBM7FFA209F07C>
Date: Thu, 3 Mar 2011 19:14:49 +0000
Message-ID: <AANLkTi=RLpEB_HAU7n1r80Nf4bR4_N3FeZDqnvoiD=J4@mail.gmail.com>
From: Andy Talbot <andy.g4jnt@gmail.com>
To: rsgb_lf_group@blacksheep.org
DomainKey-Status: good (testing) 
Subject: Re: LF: Topband Test
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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 <c.ashby435@btinternet.com> 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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<div>See the article on Dopplergrams published by G3PLX in Radcom some tim=
e around 1998 - 2000.=A0(No record of teh exact publication date).=A0=A0=
 Many plots of low-HF carriers splitting into two.</div>
<div>=A0=A0=A0 </div>
<div>We had to use a separate DSP card to=A0do narrow band monitoring in=
 those days</div>
<div>=A0</div>
<div>Andy</div>
<div><a href=3D"http://www.g4jnt.com/">www.g4jnt.com</a></div>
<div><br><br>=A0</div>
<div class=3D"gmail_quote">On 3 March 2011 18:55, Chris <span dir=3D"ltr">=
&lt;<a href=3D"mailto:c.ashby435@btinternet.com">c.ashby435@btinternet.com=
</a>&gt;</span> wrote:<br>
<blockquote style=3D"BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8e=
x; PADDING-LEFT: 1ex" class=3D"gmail_quote">
<div bgcolor=3D"#ffffff">
<div><font size=3D"2" face=3D"Arial">Hi All,</font></div>
<div><font size=3D"2" face=3D"Arial">Yesterday evening Pete, M0FMT, transm=
itted QRSS on topband for a test. An unexpected effect was noticed with th=
e trace splitting in two. Nothing new or &#39;earth shattering&#39; I expe=
ct, but new to us and worthy of further experimentation.</font></div>

<div><font size=3D"2" face=3D"Arial">See the result and conclusion on my=
 website <a href=3D"http://qsl.net/g4ayt" target=3D"_blank">http://qsl.net=
/g4ayt</a> on the bottom of page 1.</font></div>
<div><font size=3D"2" face=3D"Arial">I have never seen this effect on 137,=
 even with quite strong audible signals, maybe others have.</font></div>
<div><font size=3D"2" face=3D"Arial">Vy 73,</font></div>
<div><font size=3D"2" face=3D"Arial">Chris, G4AYT, Whitstable, UK.</font><=
/div></div></blockquote></div><br>

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