[TowerTalk] Re: Force 12 C4XL (with elements insulated from boom) - bonding an element to boom to allow shunt feeding tower?

[Tom Sykes]

I'm building a Force 12 C4XL (2 elements on 40M, plus C-3 tri-bander).  I plan to shunt feed my Rohn 25G tower on 160M.  However, the elements on the Force 12 antenna are insulated from the boom.  I seem to recall reading some threads on T-T discussing this issue, but I was unable to locate this info via an archive search.  (By the way, my guy wires are insulated from the tower).
  If I remember correctly, the 40M reflector can be bonded to the boom without affecting the antenna performance.  I think someone suggested bonding through a series inductor (a few turns of wire).  Does anyone have experience or knowledge with this situation?  (I tried to ask Force 12 this question but was unable to make contact them this week.)

  Any info would be greatly appreciated!  The antenna is going up on Monday with help from K7LXC.


  73,  

  Tom, NU7J