[Elecraft] KAT100 Alive and Healthy!

[Don Wilhelm]

Roy,

That goes to prove once again that "my feedline tunes may antenna" due to
the transformer effects of the feedline length.

The major problem with a multi-band antenna is finding a feedline length
that provides an adequate match for the tuner on all bands - but I wonder
just how high the SWR is on the RG-8X and how much signal is getting lost in
that feedline.

73,
Don W3FPR


> -----Original Message-----

> Earlier I had stated my KAT100-1 was displaying random SWR LEDs
> on 30 meters.  My antenna is a Carolina Windom 80 with
> approximately 70 feet of RG8X coming off the bottom of the lower
> balun to the shack.  (There is an additional 22 feet from lower
> balun to the off-set center conductor.)  A light bulb turned on
> in my head and told me to try some extra length of coax on the
> feed line.  I added an extra 4 1/2 feet which the KAT100-1 really
> liked.  Now it tunes 1:1 SWR on all bands and the KAT100-1 works
> to perfection (only the leftmost green LED lights up).  The Bird
> 43 wattmeter between the KPA100 output and KAT100-1 input
> verifies this.  Sometimes a simple solution is right under your
> nose.  Roy Morris  W4WFB