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resonance is adjusted by lengthening or shortening the top vertical element. swr on the feedline is adjusted by moving the 13" fiberglas spacer bar up and down between the two legs of the quarter wave matching section. you have to read the patent to actually figure this out, this information is not included in the astroplane owners manual.


without this information and its proper application no one will ever see R=50 jX=0 @ any frequency within the range of the astroplane antenna. the process requires adjustment and readjustment back and forth between the vertical element and the matching section to accomplish this, chances are you've never heard this before. it's all in the patent.