Scott:
I had a 7 ele 10 mounted 8 ft above a KLM 4 ele 40 for 10 years. No problems
with either antenna concerning interaction.
Sure looks like your antenna is not connected to the feedline, or there is a
short in the feed system. You mentioned adding insulators to the feed system.
Are you sure those insulators ar
RF (7 MHz) OK? If they are black and are not designed to be and RF insulator
they may have high carbon content (makes black color) which can make them a
poor RF insulator and cause the feed
system to go crazy.
I used lots of different 4:1 baluns with the antenna, the best was a 1/2 wave
4:1 single band coax balun.
I have lots of experience with the 4 ele 40 (It drove me nuts because it always
needed something fixed, but I still have 2 of them in the barn!). Let me know
if I can help.
73,
Tim K3LR
"Scott R." wrote:
> Scott
>
> >Your problem is really perplexing. Suggestions: Was the beam
> >functioning OK
> >before the installation of the 10 meter antenna?
>
> Unknown, as the 10 meter antenna went on the mast first.
>
> >Perhaps the phasing harness
> >is shorting out...it can happen if you don't put some sort of
> >insulation on them. Since the SWR is close to what a bad balun would
> >show, my guess is it is
> >somewhere in the balun/phasing harness coax. I would suggest putting
> >the MFJ
> >259 on a very short piece of coax to the balun to see what you have.
> >Let me know what happens.
> >Bill K4XS
>
> We're fairly certain this is not the balun, after trying the stock
> KLM 4:1, a new Radio Works 4:1 and (just for why not? value) a
> Radio Works 1:1. All showed the same results. It didn't seem to
> matter what balun of the 3, or which of the three pieces of coax
> we tried (2 short ones, one long RG213) were connected.
>
> On the phasing harness, the stock separators looked pretty chintzy.
> We ended up adding PVC spacers to the driven element phasing
> harness while the antenna was still on the ground in an attempt
> to keep them from shorting.
>
> Scott W4PA
>
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