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Jan,
You did not state why you need to construct a ground plane. Is your plane composite? In that case you could get a half wave antenna from Spruce and not worry about a ground plane. Its only about 5.5" long - but a bit pricier. ----------------------------------------------------------- Paul Lee, SQ2000 canard project: http://www.abri.com/sq2000 "Mads" wrote in message ... Anyone with depth knowledge of groundplanes for transponders? - their mission (any theory would be appreciated)? - required dimension - required shape (is a cross OK or does it have to circular) - material (is aluminium tape OK?) - installation - follow the a/c body, or flat - how critical is the above (loss of signal strength?) regards Jan Ivar |
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