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Art,
I looked at your webpage at http://home.insightbb.com/~aunwin/index.htm I don't understand how you claim that all three elements in your cluster are resonant given that the drive impedance of two of them is highly reactive. Your antenna appears to be a fairly mediocre weird yagi. You can continue to write science fiction about how radiation is caused by particles ejected from the conducting material and their curling action about the element, or whatever it is you're talking about. Have fun. Sorry if my pseudo-self is going to keep pseudo- thinking that your antenna is more or less a pseudo-two-element yagi. Dan The structure, as shown on the web site, has the following parameters: Gain at 10 deg. elevation -- 10.2 dBi F/B ratio -- 5.5 dB Input impedance -- 126 + j 171. Ball park guess 2 element beam at the same elevation. Driven element 28", reflector, 29.5", and element spacing 7". Elements 0.2" dia. aluminum: Gain at 10 deg. elevation -- 12.3 dBi F/B ratio -- 12 dB Input impedance -- 35 + j 38 All above simulations using NEC above a perfectly conducting ground. Regards, Frank |
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