[OKDXA] KT-34A

[Kim Elmore]

Hmmm... Well, it's a 4:1 unit. That would be a royal PITA if that's 
it. It's Not Fun to get to...

Kim N5OP

At 06:43 PM 2/28/2010, you wrote:
>On 2/28/2010 5:58 PM, Kim Elmore wrote:
> > Hi Bob
> >
> > I've already done that part and everything was fine until I checked
> > today.  Nothing has changed for several years with my antenna set up,
> > so I'm at a loss.
> >
> > Thanks,
> >
> > Kim N5OP
> >
> > At 05:48 PM 2/28/2010, you wrote:
> >
> >> On 2/28/2010 3:59 PM, Kim Elmore wrote:
> >>
> >>> On top of the power line QRN...
> >>>
> >>> I recently noticed that my KT-34A has a significant mismatch on 15 m:
> >>> about 3:1. A week ago, I didn't have this problem. It still has F/B
> >>> and seems to otherwise work OK. Anyone out there with any ideas as to
> >>> what might have changed? I was hoping for a windy day so that I could
> >>> check for loose hardware but, of course, we have a calm day. I don't
> >>> see any changes when I rotate it, but I have to wonder of all the ice
> >>> and wind has finally done it in. Note that it still seems perfectly
> >>> fine on 20 m and 10 m, something I find odd because the 15 m traps
> >>> have to be OK for that to be the case. The mismatch appears to be
> >>> independent of frequency.
> >>>
> >>> Any ideas as to what might have changed?
> >>>
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> >>>
> >>>
> >> Kim, I once had a KT34XA, and it wanted to couple with anything in the
> >> air near it. If I had it turned so its elements were parallel another
> >> antenna, it would always affect swr...sometimes severely. I gave up
> >> trying to hang a dipole off the same tower because of that. I don't know
> >> your situation, but if you have other antennas it may couple with, try
> >> turning the KT34 while monitoring the SWR.
> >>
> >> 73, Bob
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> >
>Okay, Ken Adams also had an XA at the time, and I remember he had a
>similar problem that turned out to be the 4:1 balun KLM used at the
>feedpoint. I don't remember which band had gone south, but I remember it
>was only one band. It was a real head scratcher. We had the antenna down
>and checked all the elements/traps/etc...All checked fine, but still the
>SWR problem on one band. Gary (W7FG) had a home brew 4:1, so we tried
>that (last resort), and it worked. We never knew what went wrong with
>the Balun. Ken just threw it into the trash and got a new one.
>
>Bob
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