August 13th 06, 06:16 PM
posted to rec.radio.amateur.antenna
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external usenet poster
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First recorded activity by RadioBanter: Jul 2006
Posts: 5
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Receiving Loop
John wrote:
Hello all,
I am new to the group and have a question.
Does anyone know a good source of information on small (less than
.1wl), shielded (coax) magnetic loops? In particular, I would like to
know design equations (are ON4UN's formulae correct and complete?). Why
do most people use RG-59 rather than a thicker coax (shielding, C/ft?)?
Why is 20' for 160 meters the norm? Discarding mechanical
considerations, wouldn't thicker coax provide greater efficiency?
I found ON4UN's book lacking on this antenna.
Thanks in advance,
John, N9RF
Try reading this John
http://www.w8ji.com/magnetic_receiving_loops.htm
73 Tom
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