[Antennas] full wave loop
Chris Boone
CBoone at earthlink.net
Sun Oct 31 22:57:01 EST 2004
A fullwave loop is about 125 ohms...Are you erecting it as a vertical or
horiz loop?..feed it in the bottom ends for vertical polarization and in
the sides for horiz (IIRC...that may be reversed! :) ..But on HF, it
doesn't matter that much....a 1/4wave of 75 should match you ok to 50ohm
IIRC
I once had a fullwave loop on 75 mtrs....off the side of a 220 ft
microwave tower.....bottom was 50ft or so off the ground...worked like a
champ on all bands (worse SWR is 3:1 at the 2nd harmonic on 40m)...fed
it with 75 ohm cable to the radio..Used it on all 80-10m with no tuner
Chris
WB5ITT
> -----Original Message-----
> From: antennas-bounces at mailman.qth.net
> [mailto:antennas-bounces at mailman.qth.net] On Behalf Of
> W7QEB at wmconnect.com
> Sent: Sunday, October 31, 2004 9:51 PM
> To: antennas at mailman.qth.net
> Subject: [Antennas] full wave loop
>
>
> Hi List;
>
> I am building a full wave loop for 20 meters. If I erect it
> as a triangle,
> should I feed it in the corner? I was thinking of feeding it
> with 1/4 wave of 75
> ohm coax. Would this be recommended?
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