[Elecraft] High SWR below 40 meters

[George Dubovsky]

Now that you have a KAT-3, you have 2 antenna ports. Is there any chance
that the wrong one is selected for those bands?

73,

geo - n4ua

On Mon, Dec 14, 2015 at 4:27 PM, Jan Ditzian <ditzian at windstream.net> wrote:

> My K3 has been having RF feedback problems with an 80 meter antenna.  In
> order to resolve things, I built an 80-meter dipole to use as a test
> antenna.  While all this was happening, over the past few months, I also
> added a used KAT-3 tuner and a KXYN3A to replace the original synthesizer.
>
> After building the dipole, I was puzzled that it would not tune up on 80.
> I do not know why it took me a week, but I finally checked out the rig on
> my dummy load.  It shows a high SWR on the dummy for all wavelengths
> greater than the 40-meter band--60, 80, and 160. The rig works just fine on
> 14 mHz. and up, and I can certainly tune it up on 40 meters.  Further
> checking shows that there is no output on 60-160, whether using the Tune
> mode at 5 watts or CW mode at 70 watts.
>
> I have no idea when or why this happened, but I really need to know the
> how it happened, so I can fix it.  Can someone give me some guidance on
> what to look at to figure this out?  It is possible that resolving this
> problem will also result in a resolution of the RF feedback problem,
> although I won't count on that.
>
> 73,
>
> Jan, KX2A
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