[Antennas] J pole horizontally polarized antenna
NA4FM (Buck)
na4fm-list at towncorp.net
Thu Jun 10 02:37:09 EDT 2004
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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