David Clemons wrote:
>
> Hi,
>
> I currently have use an inverted V with the apex at 55 feet and
> one of the legs with some bends in it (to keep it on my property). With
> 100 watts, I get out real well to the Caribbean but the antenna leaves a
> lot to be desired into Europe and I don't think I've ever worked anyone
> west of the Mississippi.
>
> I am considering using a half sloper (one side of coax to the
> tower and the other side to half of an inverted V). My other options
> are a shortened vertical (max height 30 or 40 feet).. UniHat makes one,
> so does Force 12. I know shortened verticals often leave a lot to be
> desired, but I suspect they would perform better than my inverted V.
> Would anyone who has had experience using any of these antennas
> (including the half sloper) be willing to share it with me? Especially
> interesting would be comparisons between them if you've done that too.
>
I used a half-sloper on a boat because of space limitations. It worked
just OK. I can't think of any reason that one would perform much better
than an inverted V (except for the slight bit of directionality gained
by the tower acting as a reflector). They can be problem to feed
because of tower resonance. Duane R. Sanderson, W0TID, has an excellent
article on the subject in the ARRL Antenna Compendium Volume 3. It is
well worth reading for anyone with or considering half-slopers.
73
Malcolm KR4HP
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