Richard Clark wrote in message . ..

A broadband antenna usually doesn't have as good a
match as a dedicated antenna.

You have too little exposure to the world of antennas to paint them
with that broad brush. A simple example is a discone antenna which is
a variant of the biconical antenna, which is the genesis of ALL
dipoles. Either the discone or the biconical display a very wide
bandwidth (octaves) and are eminently matchable by definition.


I'll bet you money that a well designed, dedicated, tunable
antenna can achieve a better SWR than any discone.

There are broadband folded dipoles for VHF,
but you don't get something for nothing! They may
be adequate across the band, but nothing beats
a dedicated antenna.



Again, didn't need a choke for this one.

You have yet to show that it is not your problem, much less the lack
of need (which is a strict requirement for tuning). "Not needing" it
can be accomplished through one of two means:
Luck,
or
a hardwired solution (the customer, like with CB whips, cannot
vary the length without causing a major shift in dynamics).
Either way, the two are probably the same solution, an even halfwave
multiple length line. The longer the line, the more tenuous the
solution.


Neither. We have varied the coax length, certainly not
keeping to multiples of 1/2 wavelength, with results
remaining the same. We just don't need it with our
design.




Someone infered the first problem, not high
above off the ground.


So what was the second thing i did?


S.