Message-ID: <002001c0dbf8$737cb960$3653073e@default>
From: "Alan Melia" <Alan.Melia@btinternet.com>
To: rsgb_lf_group@blacksheep.org
Subject: LF: Re: Fundemental Ground System question
Date: Sun, 13 May 2001 18:52:02 +0100
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Hi Paul, glad you are getting as much enjoyment as we are out of 136. I
think you have put your finger on it, we are  having to go back to check our
preconceptions. As far as earthing is concerned one of the base papers I
have seen is one in the appendix of the RSGBs LF Experimenter's Handbook.
The original paper dates back to about 1922, but it does explain some of the
somewhat strange results that we have found when extending the top load an
using different geometries. It goes some way to explaining why some
'gimicks' dont seem to work in some situations.

Keep having fun!! Hope you get a shot at 136kHz soon.

Cheers de Alan G3NYK
Alan.Melia@btinternet.com
-----Original Message-----
From: Paul A. Cianciolo <paulc@snet.net>
To: rsgb_lf_group@blacksheep.org <rsgb_lf_group@blacksheep.org>
Date: 13 May 2001 02:30
Subject: LF: Fundemental Ground System question


>Hello Folks,
>
>I have had the priviledge of being subscribed to this list for about a year
>now.
>I absolutley enjoy and learned a lot.  Thank you.  Many times though the
>list
>will engage topics that I do not understand....  So I hit the books..
Thank
>you again!
>
>Every now and then it seems neccessary to find several references on a
topic
>and
>approach it from a number of "different angles"
>
>This is the case with all this talk about ground systems,  losses in earth,
>trees, building, etc.
>
>Can someone point me to a sight where some of this is explained?
>
>For instance is a vertical antenna system sort of like a complex circuit of
>L, C, and R?
>With some of the R being the earth?  Some of the C being to ground in
series
>with this R that is is series
>with the L?   Isn't there L in the ground path if we put down radials.  Is
>not there C between those radial and the antenna?  And the earth for that
>matter.  Do trees shunt current to earth?    There seems to be a million
>different values that need to be considered!!!
>
>So...   I am very confused.  I am in the Northeastern US with 3 acres of
>property and 130" tower.
>Needless to say I am chomping at the bit for 136 Khz to accepted for use
>here in the states.
>
>I realize that these are basic questions but I want to understand.
>
>There are list members from all over the world subscribed here which is why
>I pose the topic to this list.
>Many times a RSGB  book will explain a topic better/differently  than the
>say the domestic books.
>
>Confused in Connecticut.  Anyone else in the same boat?
>
>Thank you
>
>
>Paulc
>W1VLF
>
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>
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>
>
>