The easiest end fed antenna for portable use with those bands on the
KX2/KX3 comes from some experiments and experience of one of the KX2
field testers (and an active SOTA ham).
Use a BNC to dual binding post (Pomona) adapter on the KX2/3. Connect a
58 foot piece of wire to the red (center conductor) post, and a 23 foot
"counterpoise" wire to the black (shield) post. The counterpoise wire
can be run along the ground or laying on top of nearby bushes.
Tie a rock or other throwing item to the end of the 58 foot radiator and
get it up in the air - TUNE it and operate.
No balun, no fuss, and the wire rolls up into a small ball for transport.
73,
Don W3FPR
On 11/18/2017 4:34 PM, JT Croteau wrote:
Friends, what would be a good end fed wire setup that will match well
with the internal KX3 ATU and cover, hopefully, 80, 40, and 30 meters?
I went out to my winter camp site, with two really tall pine trees,
and tried to experiment with a 9:1 UNUN, 135' radiator, and 35' of
RG8X. It was a total disaster. Best matches were on 20, 17, and 15
meters but only with 6.4:1 SWR. No match at all on the lower bands.
With my two trees, the radiator made for a perfect inverted-L shape.
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