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Jerry Martes wrote:
"Ed" wrote in message
.92...
."

The answer to the question would seem to be that it would not work
very well just due to experiance. The swr would be off the charts and
a rig that had an internal tuner would not tune that kind of antenna
over that frequency range if the swr had to be under 3:1. Also the
loss in the coax due to the high swr would be very large..



Well, that was my original surmise of the situation. I was just
trying to have someone with expertize on EZNEC run the antenna at the
three frequencies listed in order to have the feedpoint SWR calculated
for each of those three frequencies. So far, no one, except Owen, has
come even close.


Ed, several years ago I had to find out why an almost identical
antenna system as you have discribed operating on similar frequencies
didnt work very well. System also used an ATU. Analysis showed data
very similar to the EZNEC values. I t was not practical to increase
the hiegth of the antenna so I went vertical using a 30ft fiberglass
whip, gov surplus. Also used inductors and capacitors switched in to
bring the antenna to resonance at the desired freq. Although we only
really used one the others had to be available. Although the ATU was
still used it was completely unneeded as only 3 frequencies were being
used seies inductance and capacitance selected by remotely controled
relays provide a match with the VSWR less than 1:.5 on any frequency .
Communication from NC to GA, FL, and DC were routinely possible with
100watts PEP SSB.


Jimmie