[Antennas] J pole horizontally polarized antenna

[David W Sher]

Conventional dipoles (and J-poles, horizontally oriented, are not
omnidirectional.  Back 40-odd (and I do mean odd) years ago, there used
to be Halo antennas (essentially dipoles bent into a circle) for various
VHF & UHF bands, normally for mobile use with horizontal polarization. 
These were commercially available and construction details were also
available in the ARRL Handbook and VHF Handbook.

Dave              W9LYA
"What wrought doG hath?"
 
On Thu, 10 Jun 2004 02:37:09 -0400 "NA4FM (Buck)"
<na4fm-list at towncorp.net> writes:
> Just fold the 1/2 wave vertical element horizontal and leave the 1/4
> wave matching stub vertical, or lay the antenna horizontal.  I have
> considered cophasing two j-poles horizontal to see how that works.
> 
> Buck
> na4fm
> 
> > -----Original Message-----
> > From: Dan Peek [mailto:dan.peek at 3abn.org] 
> > Sent: Tuesday, June 08, 2004 10:07 AM
> > To: antennas at mailman.qth.net
> > Subject: [Antennas] J pole horizontally polarized antenna
> > 
> > 
> > I have been asked to construct an antenna for a small 
> > community TV transmitter somewhere in Africa on our channel 7 
> > (174-180MHz). The J pole or super J pole looks like a good 
> > candidate, but I believe it is vertically polarized. Is there 
> > any way to make it horizontally polarized (or elliptical for 
> > that matter)? Any way to electrically adjust the down tilt? I 
> > am considering using soft copper tubing of ½” or 5/8” so it 
> > can be rolled up in a suit case and carefully straightened 
> > out on arrival. Any thoughts or suggestions would be 
> > welcome--other antenna types, calculation software, 
> > construction ideas, etc.
> > 
> > Thanks,
> > 
> > Dan Peek N4FAA
> > Dan.peek at 3abn.org
> > 
> 
> 
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> 
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