Hi guys,
Got a question I'd love to run by you:
At another QTH I had a 160-m. inverted vee with apex at 60' on a Rohn 25
tower. Had a Tribander mounted 3' up above it. Not much of an antenna on 160
but this particular antenna worked DX well ... much better than it should
have. Such as, a KL7 told me that I typically was the first station East of
the
Mississippi he heard on 160.
For a center insulator I was using a Unadilla 1:1 balun... the one with the
ground strap attached for lightning protection. The ground strap was
attached to one leg of the tower.
I am wondering if somehow the DC ground strap was also coupling some RF into
the tower?
(it would appear possible as I was never able to get the SWR on that
particular setup under 1.7 to 1 and usually it's quite easy to get a lower SWR
than
that) Or would everyone agree that if I had in-direct coupling taking place
that it was via the top mounted tribander just a few feet above the apex of
the Inv. V?
With the way the low Inverted V worked so well on DX q's it would seem
certain that somehow the Vee was getting indirectly coupled to the tower...
thereby giving it some vertical polarization.
Question: Are there any proven ways of mounting a Dipole or Inverted V on a
tower so that some indirect coupling to the tower and therefore some
vertical polarization can be derived from the tower?
Thanks!
73, Dick- K9OM
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