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as far as the difference in raising them it's just simple weight and leverage . the taller/heavier antenna is gonna take more effort . and there's the argument for tip height ......


W8JI and a few others over at http://www.eham.net/ehamforum/smf/index.php/topic,75921.0.html don't care for the vector and seem to believe no vertical beats a 1/4WGP as long as the top of their tips are equal . i don't believe that because when i compared my 1/4 wave with a tip height of 27 ft to my 5/8 with a tip height of 30 1/2 ft the 5/8 did much better contact wise and needle wise . the 5/8 did better when i raised it up another 9 ft , but no where near as much as it did going from the 1/4 with the 5/8 having a 3 1/2 ft tip height advantage . but my antennas were home-made so maybe i had something wrong on the 1/4 ......... i haven't tried a astroplane .