[Antennas] full wave loop

Chris Boone CBoone at earthlink.net
Mon Nov 1 08:01:22 EST 2004


Nope....TS680 with no tuner

> -----Original Message-----
> From: David Sher [mailto:davew9lya at juno.com] 
> Sent: Sunday, October 31, 2004 11:31 PM
> To: CBoone at earthlink.net
> Cc: W7QEB at wmconnect.com; antennas at mailman.qth.net
> Subject: Re: [Antennas] full wave loop
> 
> 
> re full wave loop on 75:  any chance the tx had a tube final 
> with a pi net?
> 
> Dave             W9LYA
> What wrought doG hath?
> 
> On Sun, 31 Oct 2004 21:57:01 -0600 "Chris Boone" 
> <CBoone at earthlink.net>
> writes:
> > 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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> > 
> > 
> 



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