Well I have gotten to the end of the KT34XA saga. All re-capped and new
balun in place. All measurements set to the 6/19/85 dimensions (Bruce said
these where the latest. 10 and 20 are below 1.4 over the band and match the
factory curve. The problem is 15 meters where the SWR is 2.4 to 3 to 1
across the band. It is almost resistive at the top and bottom of the band
but 2.4 to 1 not 50 ohms. The only thing I did not have before I got the
new revisions from Bruce is the B dimension on page 9 which sets 15 meters.
I will measure the length to the strap on the dual driven elements and the
reflector first as I can reach those elements from the roof with the tower
cranked down. The capacitors all check less than 1/2 ohm and the 20 meter
freq is not affected by the other side of the B strap. KLM says 20 meters
is based upon length A (to the tip) and only the length changes 20 freq. I
lengthened the rear reflector as they stated and got 20 meter to a low SWR.
Anyone have any other ideas? I read thru the archives and except for dimem
B I did everything right. The balun and match are good (I even put the old
balun back in..same result).
The caps on the front driven element where boiled and cracked and the
reflector 10 meter section had slid 3". I replaced 3 of the fiberglas
spacers in all. Damaged by pollution!
Dave K4JRB
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