In article ,
"Meindert Sprang" wrote:

These antennas are half-wave antennas and they don't need a counterpoise.
Only a quarter-wave antenna needs one, to account for the other missing
quarterwave part, so to speak.

Meindert

Well, that is not actually true in most cases. If you actually take a
Shakespear Fiberglass VHF Antenna apart, you will find that they are
1/4 wave driven elements, with 1/4 wave of Ground Sleeve shoved up
the inside of a hollow fiberglass fishing pole and epoxed in place.
The really High Gain ones, are Colinear Arrays of 1/4 Wave Segments
over a 1/4 wave Ground Sleeve, again shoved up a hollow fishing pole
and expoxed in place. Cheap to build and no tuning elements to mess
with like your endfeed 1/2 wave whips.
Morad 156HD's are actually an Endfeed 5/8 Wave with a matching element
built inside the aluminum 1/4 Wave ground sleeve. Mechanically, very
rugged, and electrically extreamly rugged. They are the most common
VHF Antenna used in the North Pacific, and Bearing Sea.

Bruce in alaska
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