Ditto on their smaller brother which operates 80/40/20 etc. It was
horrible on 80 but reasonably good on 40. By the way, one has very
small bandwidth on its lowest freq band. At least for the 80M version
one had to select the value of the cap (burried inside the aluminium
tube) for the subband of interest. Hardly convienent to change.
Nobody tells you about this cap until after you buy.
73 de Brian/K3KO
> 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
> NO antenna.
> Tom N4KG
> 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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