Greg - ZL3IX wrote:
> Hi all,
>
> I have the opportunity to extend my remote Rx site with a couple of
> phased Pennants for the SE/NW direction. I intend to cover both
> directions with a single pair of antennas, and use relays to switch
> between load and feed at each one. I will be using W8JI's feed
> transformer design with two transformers per antenna. For convenience,
> I am thinking of putting the relay in a box at one of the feed/load
> points and running a coax right through the middle of the antenna to the
> opposite feed/load point.
>
> My thinking is that, since the feed is isolated at each end, and the
> coax is much shorter than a wavelength, there should be no pattern
> distortion, and little noise pickup. I will run a simulation on this
> just to check, but I was wondering if anyone is using a similar
> arrangement, and, if so, what the results are.
>
> 73, Greg, ZL3IX
>
>
Several guys have told me that they have not managed to get this idea of
running the coax between the arms of the antenna, to work. I have also
realised that I would need two relays, or a 4PDT relay, as I would need
to isolate the grounds as well. Some pointed out that they use separate
Pennants, but I think that this is overkill. I will simply buy a few
metres of extra coax so that I don't have to run it through the middle
of the antenna. I know that the dual feed system works, as I have used
it before.
Thanks for your thoughts, guys.
73, Greg
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