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On Fri, 14 May 2004 13:26:45 -0700, Jack Twilley
wrote: I am interested in people who have first-hand experience with a full-length dipole mounted at the full height for any particular band. A 10M dipole is full-sized if it's the full length and mounted at the full height. Ditto for 160M. Richard Describe your needs first, and then ask what would be Richard reasonable. I hope the clarification above is enough -- if not, please let me know. Hi Jack, This is still inspecific. "Full height" is actually meaningless. Let's look at a 40M dipole antenna and choose a modest 20° launch angle to compare against. 5M over real ground: -2dBi 10M over real ground: 1.29dBi 15M over real ground: 3.75dBi 20M over real ground: 6.27dBi 25M over real ground: 8.08dBi 30M over real ground: 7.67dBi 35M over real ground: 7.1dBi 40M over real ground: 7.52dBi Well, let's see - best gain is NOT at any cardinal point such as quarter wave, half wave, three quarter, nor full wave above ground ANY of which "could" be interpreted as "full height." This exercise is easily within the limited feature set of the free distribution of EZNEC. 73's Richard Clark, KB7QHC |
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