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I also have recently moved to a new QTH. At my last, I was
a devotee of ground mounted verticals with many buried radials. My main antenna there was a 42 foot vertical, with 48 buried radials, each about 50 feet long. This time, being older and less inclined to digging, and work in general, but still being a devotee of verticals, I decided to try a vertical dipole in a tree. It is 28 feet long (tall), with the bottom end inches off the ground. The feed is in the middle with open wire line and an air-core balun. I use a "balanced balanced" Richard Measures-style "L" network tuner in the shack. The tree is a tall, skinny one, and the vertical wire is about five feet from the tree. I have been using it for about three months now, on 80 through 20 meters, mostly on my favorite, 40 cw. I suppose at this point, following the pattern of others, I should go into a dissertation on signal absorption by trees, effect on pattern, effect of lack of radials, etc. I don't have any first-hand information on all that, but I can say that it works great for me. Performance is comparable to the aforementioned vertical at my previous QTH, considering that it is somewhat shorter. I certainly wouldn't advise against trying one because of seemingly adverse theoretical considerations. Steve W9HJW |
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