I have heard you mention doing everything except getting rid of that tuned
length line. I would reset the elements to the mfg specs, and get another
line (NOT the same length) and try again. Every good null you have is at a
multiple of the 7.15 where the coax is a half wave. This has to mean something
Good luck
Bill- W4BSG
At 04:02 PM 9/22/98 -0500, you wrote:
>
>Hi All,
>
>I'm about to put up the first KT-34XA this weekend. Upon checking
>the SWR, it wasn't too close to the published curves, especially
>on 15M.
>
>The antenna:
>KT-34XA
>Brand new Blue Insulators installed
>ALL connections (strap, cap tube, tubing) thoroughly cleaned & penotroxed
>All dimensions set, checked, and REchecked to latest dimensions
>I've read the K3MM "bible" to rebuild
>I've check the balun with the MFJ-259B and get nearly a 30dB return loss
> into a 200 ohm load on all bands. (That means less than 1.1:1 SWR.)
>
>The test setup:
>Antenna pointed straight up into the air
>Reflector off of ground by 9-15'
>Elements in a plane 90 degrees to tower (perpendicular to a line drawn
> from boom to tower)
>Brand new RG-213 coax, cut to 0.5 wavelength on 7.15MHz
> (multiple of a half wave for 10/15/20)
>New MFJ-259B
>
Bill Aycock --- Persimmon Hill
Woodville, Alabama, US 35776
(in the N.E. corner of the State)
W4BSG -- Grid EM64vr
baycock@HiWAAY.net
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