The problem with the GAP antennas is on the LOWEST
band of operation where a capacitive reactance is transformed
through a length of small coaxial cable inside the tubing to
present a SERIES INDUCTANCE at the feedpoint, only on
the LOWEST band of operation.
I know of a couple of users of the 160 / 80 / 40 / 20 M GAP
vertical who do reasonably well on 40 and 80 meters and
surprisingly better than one would expect on 160M. It is
NOT a great antenna on 160, but any antenna is better than
On Sun, 02 Sep 2001 Peter Larsen <firstname.lastname@example.org> writes:
> > That is why small "(almost) no radials required" verticals
> > like the R7, GAP, MFJ and others often work OK on 20 meters
> > or higher.
> For this statement you need to define which Gap antenna you
> are referring to. The Gap Voyager is 45 feet tall. (not small)
> Has a 10 foot diameter capacity hat, and requires 3
> counterpoise wires.
> > the GAP vertical are among the poorest low band
> > verticals (40 meters and down)
> The Gap Voyager only works on 160/80/40. (again clarity please)
> Other wise you have a very well thought out response.
> Peter J. Larsen
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