[Elecraft] KX3 Field Ant. for 80/40/30

[Don Wilhelm]

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.
>