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Date: Mon, 22 Feb 2010 19:48:57 +0000
Message-ID: <9afca2641002221148l19a80ffeg764ef3b1aa0a9243@mail.gmail.com>
From: Roger Lapthorn <rogerlapthorn@gmail.com>
To: rsgb_lf_group@blacksheep.org
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Subject: Re: AW: LF: AW: Beaconing on 8.79 kHz in QRSS
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There is a copy of *G0AKN's paper* summarising his experiments on my
website.

See <
http://sites.google.com/site/g3xbmqrp/Home/10khz/earthcomms.pdf?attredirects=0&d=1
>

73s
Roger G3XBM

On 22 February 2010 17:51, John RABSON <john.rabson@numeo.fr> wrote:

> If I recall correctly, G0AKN (now SK) tried audio frequencies as well as 73
> and 136 kHz.  G8DSU, who monitors this list, may have more information.  An
> article by G0AKN on this subject appeared in the Jan-Feb.1999  issue of the
> AMRAD newsletter.  More information may be found by searching online for
> G0AKN.
>
> Most cave radio work takes place on 87kHz USB although we have sometimes
> used frequencies as low as 27kHz.  The maximum range we have achieved with a
> 4 W transmitter is about 2 1/2 kilometres.
>
> 73
> John Rabson
> F5VLF
> 58800 Cervon
> France
> JN17vg
>
>
>
>
>
>


-- 

http://g3xbm-qrp.blogspot.com/
http://www.g3xbm.co.uk
http://www.youtube.com/user/G3XBM
G3XBM    GQRP 1678      ISWL G11088

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There is a copy of <b>G0AKN&#39;s paper</b> summarising his experiments on=
 my website. <br><br>See &lt;<a href=3D"http://sites.google.com/site/g3xbm=
qrp/Home/10khz/earthcomms.pdf?attredirects=3D0&amp;d=3D1">http://sites.goo=
gle.com/site/g3xbmqrp/Home/10khz/earthcomms.pdf?attredirects=3D0&amp;d=3D1=
</a>&gt;<br>
<br>73s<br>Roger G3XBM<br><br><div class=3D"gmail_quote">On 22 February 20=
10 17:51, John RABSON <span dir=3D"ltr">&lt;<a href=3D"mailto:john.rabson@=
numeo.fr">john.rabson@numeo.fr</a>&gt;</span> wrote:<br><blockquote class=
=3D"gmail_quote" style=3D"margin: 0pt 0pt 0pt 0.8ex; border-left: 1px soli=
d rgb(204, 204, 204); padding-left: 1ex;">
If I recall correctly, G0AKN (now SK) tried audio frequencies as well as=
 73 and 136 kHz. =A0G8DSU, who monitors this list, may have more informati=
on. =A0An article by G0AKN on this subject appeared in the Jan-Feb.1999 =
=A0issue of the AMRAD newsletter. =A0More information may be found by sear=
ching online for G0AKN.<br>

<br>
Most cave radio work takes place on 87kHz USB although we have sometimes=
 used frequencies as low as 27kHz. =A0The maximum range we have achieved=
 with a 4 W transmitter is about 2 1/2 kilometres.<br>
<br>
73<br>
<font color=3D"#888888">John Rabson<br>
F5VLF<br>
58800 Cervon<br>
France<br>
JN17vg<br>
<br>
<br>
<br>
<br>
<br>
</font></blockquote></div><br><br clear=3D"all"><br>-- <br><br><a href=3D"=
http://g3xbm-qrp.blogspot.com/">http://g3xbm-qrp.blogspot.com/</a><br><a=
 href=3D"http://www.g3xbm.co.uk">http://www.g3xbm.co.uk</a><br><a href=3D"=
http://www.youtube.com/user/G3XBM">http://www.youtube.com/user/G3XBM</a><b=
r>
G3XBM =A0 =A0GQRP 1678 =A0 =A0 =A0ISWL G11088<br>

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