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![]() "Frank" wrote in message news:iWzyk.2033$1x6.488@edtnps82... This has lead us to the obsurd present point where a cubic foot size antenna for top band should have its reflecter a couple of blocks away and of a size stretching for several thousand feet instead of a few inches where if the antenna was a ball of presureized water the close reflector would prevent the jet of water spreading to the rear. Given a 3 ft copper dipole on 1.9 MHz the free space gain is -4.6 dbi, and exhibits a classic dipole radiation pattern. Placing a 6 ft diameter, radial reflector 3 ft from the antenna has no effect on the radiation pattern, other than a slight reduction in gain to -5.2 dbi. Frank you really don't think art is going to believe that do you?? it is after all based on a piece of software using maxwell's equations... which he has said he believes in and that the software works, because it obviously shows that his antenna produces a spotlight beam when you tilt it the right angle... but he won't believe yours. |
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