From: WarmSpgs@aol.com
Message-ID: <120.b40e402.299996b0@aol.com>
Date: Mon, 11 Feb 2002 16:50:40 EST
Subject: Re: LF: Loop questions
To: rsgb_lf_group@blacksheep.org
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In a message dated 2/11/02 2:09:07 PM Eastern Standard Time, paulc@snet.net 
writes:

<< Here are my questions.
 
 1) Does this "high impedance antenna?"  suffer from the same problems as a
 high "Q"  vertical such as absorption from trees, ground etc?  So that
 removing it from this environment might increase signal strength? >>

A series-resonated loop is not a high-impedance antenna.  As should be clear 
from Bill Ashlock's experiments, transmitting loops are less immediately 
affected by some aspects of their environment; but they are affected by close 
proximity to any somewhat conductive surface, as you found out by raising 
your loop above ground.
 
<< 2) Would I benefit from using Litz wire?  >>

Maybe.
 
<< 3) Does higher "Q" neccessarily mean more radiated signal? >>

Not absolutely, but it does indicate reduced losses, which is generally more 
conducive to radiated signal strength.
 
<< 4) In most cases I don't belive we want the coil to radiate but in this 
case
 I want to increase it. Any ideas on how to do that? >>

Area enclosed by the loop is the key.  But in this case, Paul, I believe you 
may be asking the wrong question.  DO you really want to do that?  If you're 
planning to put the transmitter at the loop, fine.  But remember that the 
regulations under which we work here currently limit us to a total antenna of 
15 meters--INCLUDING transmission line, which in your current setup is 
already 110m.

73,
John