[Elecraft] K3 KAT3 strange behaviour

[Tony Estep]

>
> On 12/05/2010 11:40 PM, elecraft-request at mailman.qth.net wrote:
> > From: Gary Gregory<garyvk4fd at gmail.com>
> >...using a double extended zepp I find it tunes all bands except 20M
> > consistently but for a couple of weeks it has been fine.
> >
> > The KAT3 will tune to 1.1:1 BUT the swr meter fluctuates...

 Gary, in my case the fluctuating SWR indication turned out to be
attributable to my station ground setup. It seems that just a small amount
of RF on the feedline can create this symptom. My non-resonant antenna comes
into a balun, then the coax goes through a line isolator, and thence to the
rig. There is a counterpoise arrangement connected at the balun which has
served satisfactorily to ground everything with a couple of antennas.
However, when I put up a new one, I got the symptom you describe. Some
tweaking of the grounding scheme completely cured it.

Tony KT0NY