Posted by Burke Jones on Jun 03, 2011; 6:44pm URL: http://elecraft.85.s1.nabble.com/KX1-Tuner-Norcal-Doublet-tp6436432.html
I constructed a Norcal Doublet using some speaker wire. It seems to
tune up fine on 20 meters using the internal KX1 tuner - but on 40
meters I could not get the SWR under 4.
Would a 4:1 balun help with this?
Any links on how to build a simple balun using an aircore and not a torroid?