[Elecraft] KX2

[Edward R Cole]

Don's comments on the fact that a J-pole is merely a Zepp where the 
1/2 wave radiator is vertical is something I discovered a few years 
ago.  I have a dual-band J-pole on 10m/6m which works well.

Note that the bottom end of the 1/4 wave matching stub is 
shorted.  By attaching coax to the stub one can find 50-ohm match 
just by sliding up from the ground end.  It was about six inches for 
the 10m J-pole.

I do not have my construction page back on my website as yet.  I used 
aluminum tubing about 25-foot long for the 10m version.  You might 
want to use a common-mode choke at the coax feed to prevent coax radiation.

73, Ed - KL7UW
http://www.kl7uw.com
     "Kits made by KL7UW"
Dubus Mag business:
     dubususa at gmail.com