Posted by
Don Wilhelm on
Jun 09, 2017; 9:46pm
URL: http://elecraft.85.s1.nabble.com/KX1-Antenna-Matching-Question-tp7631519p7631520.html
Stan,
Have you tried the 16 foot counterpoise wire on 20 meters.
I don't know, but it is worth a try.
Is your counterpoise wire on the ground? If not, that may be the
difference. A wire on the ground produces a coupling with Mother Earth.
The same wire in the air is just another part of the antenna.
As a fallback, you might want to try something more close to resonance
on 20. A radiator 16 feet long and a radial also 16 feet long. Double
those lengths for 40 meters.
Bruce Prior - a Field Tester for the KX2 had good luck with a 58 foot
radiator and a 13 foot counterpoise wire on the ground for 40 through
10. Although the KX2 ATU has a much greater range than the KX1, it just
may work.
73,
Don W3FPR
On 6/9/2017 4:55 PM, stan levandowski wrote:
> When following the instruction in the KXAT1 manual and using a wire
> between 24-28 feet and a 16' counterpoise for 40 and an 8' counterpoise
> for 20, the best I can ever get is a 1.6 SWR on 20 and 2.8 SWR on 40.
>
> I've spent lots of time shortening and lengthening wires and writing
> down results and I can't hit the magic combination.
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