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Thanks for the numbers Walter. I have heard another owner say the antenna appeared to be low in frequency when set at 22' too, but I don't know the height and that may make some difference. How about using the 259a with the feed line? How does it look in the air, bandwidth and R, X, SWR, at 27.205?

 

Here is my modified SP 500 with the latests matcher, but it is not right yet:

 

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