[TowerTalk] KT34A VSWR Preliminary Check Complete

[David Rich]

I placed the KT34A on a 10 foot tower section to make preliminary VSWR
measurements.  The house and some trees were pretty close by.  I was
happy with the measurements below except on the high end of 15 meters.

I noticed after the measurements that I did not have the orientations of
some of the capacitor sections correct.  The dimensions are correct but
some of the bent tubes are suppose to be in front of the element while
others are suppose to be towards the back.  I have all of mine in front
of the elements.  I will correct this before I put it up but wonder how
much difference this will make on my VSWR readings?  I also have a
possible problem because my reflector is 0.500" shorter than the rear
driven element.  I still have not resolved if this is a typographical
error in the dimensions somewhere or if this is correct.

and made the following measurements:

freq(MHz)     VSWR
13.829          2.0
14.000          1.5
14.100          1.3
14.200          1.1
14.300          1.3
14.350          1.7

20.809          2.0
21.000          1.1
21.100          1.2
21.300          1.6
21.367          2.0
21.400          2.4
21.450          3.2

27.823          2.0
28.000          1.4
28.100          1.1
28.200          1.0
28.300          1.1
28.400          1.2
28.500          1.4
28.600          1.3
28.700          1.6
28.800          1.7
28.900          1.8
29.000          1.8
29.100          1.9
29.200          2.0
29.734          3.0


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