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I wouldn't blame the antenna.  That Imax has more that twice the capture area than a 1/4 wave whip does.  Lower angle of TX radiation too.  Cool stuff to work with.


If you have the ground plane kit on the Imax 2000, have an ugly balun/choke coil, and have the antenna up ~50 ft, I would say that you have done very well.  An antenna doesn't make conditions happen; it just maximizes your best receive and transmit when conditions are present.  Any 5/8 wave antenna is the best vertical antenna to have and use - IMO.


I didn't isolate mine and I use dacron guy rope.  Not guy wire.  My antenna is only up 30 ft, and I've talked 8k miles several times with it to Australia, New Zealand, South America, and Europe.  As well as talking up to 100+ mi locally.  Either you did something wrong or have prematurely misjudged it.  One or the other - IMO . . .