Message-ID: <008d01c089ed$74f14fc0$2529f7c2@oemcomputer>
From: "John Rabson" <word.factory@zetnet.co.uk>
To: rsgb_lf_group@blacksheep.org
References: <3A7246CB.FF3090A0@alg.demon.co.uk> <3A7322C1.A2927B65@usa.net> <3A73C58C.4B20F438@alg.demon.co.uk> <3A7452E3.3B7D6ADC@usa.net> <001701c08959$4ba3e220$38d42cc3@computer>
Subject: LF: Re: Earthing
Date: Mon, 29 Jan 2001 09:59:57 -0000
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In cave radio experiments we find that one x metre rod can be replaced by x
one metre rods spaced by 2x or more metres.

See also The LF Experimenter's Handbook, Appendix 1 (particularly figure 11)

73 de
John Rabson G3PAI

----- Original Message -----
From: Martin M5CIX <m5cix@cwcom.net>
To: <rsgb_lf_group@blacksheep.org>
Sent: Sunday, January 28, 2001 6:36 PM
Subject: LF: Earthing


> Well the RX loop is functioning and the TX is almost there so the issue of
> antennas is coming to the forefront of my mind. In particular is the
> earthling arrangements for which I would like advice.  It is anticipated
> that the antenna will be a loaded vertical of around 8 to 10 meters with a
> top T one leg about 3 meters west the other 5 meters east.constructed out
of
> 2.5 mm copper.
>
> As the ground is very wet at the moment it is a good time to bang in some
> earth rods.  Here (Pangbourne) if you dig down through sandy soil for
about
> 2 meters you come to gravel and then chalk. The water table in summer is
at
> least 2 meters down and the soil becomes very dry.  The garden is about 7
> meters wide.
>
> Any ideas on how to archive an good earth relevant to the efficiency of
the
> aerial.  Have contemplated driving copper pipe down at the corners and
> considered driving them at an angle of 30 degrees under neighbours
gardens.
> Could lay radials just under surface but in the summer they will be in
very
> dry earth.
>
> Ideas please
>
> Martin M5CIX
>
>
>