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Date: Thu, 27 May 2010 16:53:43 +0100
Message-ID: <AANLkTikURGYPEkKlzEYnS-b1byZqncsKY0rlJ97sNcQe@mail.gmail.com>
From: Roger Lapthorn <rogerlapthorn@gmail.com>
To: rsgb_lf_group@blacksheep.org
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Subject: Re: LF: Earth electrodes
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A paper I read suggested multiple small rods were as good as one large one
where the ground prevented deep insertion of a larger rod, such as in a
cave.

73s
Roger G3XBM



On 27 May 2010 14:13, John Bruce McCreath <weazle@hurontel.on.ca> wrote:

>
> Hello LFers,
>
> While laying in bed this morning pondering the inside of my eyelids I got
> to thinking about the electrodes used
> for "through the earth" communications.  What is more important, the depth
> of the electrode or its surface area?
> A typical 3/4 inch diameter by 4 foot long ground rod has a surface area of
> 113 square inches, while a metal
> plate 1 foot square has a surface area of 288 square inches.  If depth is
> the key, then obviously the rods have
> the advantage, but if it's surface area, the plates win hands down.  Even
> in stoney soil, it's relatively easy to
> make a slit-like hole into which could be slipped a sheet of galvanized
> metal with a lead attached.  To make
> a good connection to the surrounding soil, pour some "kitty litter" into
> the slit and moisten it with water so as
> to improve the contact between the plate and the surrounding soil.  Am I
> onto something here or have I
> overlooked some important detail?
>
> 73, J.B., VE3EAR
>
> LowFER Beacon "EAR"
> 188.830 kHz. QRSS30
>
>
>
>
>
>
>


-- 
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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A paper I read suggested multiple small rods were as good as one large one=
 where the ground prevented deep insertion of a larger rod, such as in a=
 cave.<br><br>73s<br>Roger G3XBM<br><br><br><br><div class=3D"gmail_quote"=
>On 27 May 2010 14:13, John Bruce McCreath <span dir=3D"ltr">&lt;<a href=
=3D"mailto:weazle@hurontel.on.ca">weazle@hurontel.on.ca</a>&gt;</span> wro=
te:<br>
<blockquote class=3D"gmail_quote" style=3D"margin: 0pt 0pt 0pt 0.8ex; bord=
er-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><br>
Hello LFers,<br>
<br>
While laying in bed this morning pondering the inside of my eyelids I got=
 to thinking about the electrodes used<br>
for &quot;through the earth&quot; communications. =A0What is more importan=
t, the depth of the electrode or its surface area?<br>
A typical 3/4 inch diameter by 4 foot long ground rod has a surface area=
 of 113 square inches, while a metal<br>
plate 1 foot square has a surface area of 288 square inches. =A0If depth=
 is the key, then obviously the rods have<br>
the advantage, but if it&#39;s surface area, the plates win hands down. =
=A0Even in stoney soil, it&#39;s relatively easy to<br>
make a slit-like hole into which could be slipped a sheet of galvanized me=
tal with a lead attached. =A0To make<br>
a good connection to the surrounding soil, pour some &quot;kitty litter&qu=
ot; into the slit and moisten it with water so as<br>
to improve the contact between the plate and the surrounding soil. =A0Am=
 I onto something here or have I<br>
overlooked some important detail?<br>
<br>
73, J.B., VE3EAR<br>
<br>
LowFER Beacon &quot;EAR&quot;<br>
188.830 kHz. QRSS30<br>
<br>
<br>
<br>
<br>
<br>
<br>
</blockquote></div><br><br clear=3D"all"><br>-- <br><a href=3D"http://g3xb=
m-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.yo=
utube.com/user/g3xbm">http://www.youtube.com/user/g3xbm</a><br>
G3XBM =A0 =A0GQRP 1678 =A0 =A0 =A0ISWL G11088<br>

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