[TowerTalk] RF on Tower

Speer, Douglas Douglas.Speer at cns.doe.gov
Tue Oct 16 16:34:04 EDT 2018


I  have a phillystran guyed tower holding a Hy-Gain TH11DX and a Force 12 Delta 240 stack.  The stack is turned with a small prop pitch motor.  The TH11DX utilizes a LPA driven element combined with passive reflector and director elements.  The LPA driven elements are RF insulated from the boom but DC grounded through a small choke located at the 10m end of the LPA (out of reach from the tower).  

Am I thinking correctly that I probably should NOT consider shunt feeding the tower or feeding it as a half sloper for risk of damaging the small choke or the prop pitch motor?  I would at times be running full legal limit to the antennas.

Doug, W5WTX
Amarillo, TX



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