[TowerTalk] Shunt Fed Tower - 160 Meter Gamma Match Question

[Chuck]

I am trying to shunt feed a tower for 160 meters.  I have a 135' Rohn 55 tower with several good sized antennas on it.  Guys are insulated.  I have run an old piece of coax up 35' about 2' off the tower for a gamma.  I have about a 150 pf variable in series and 200 pf to ground.  Ground is 2 -140 foot radials, elevated 10'  (In the past I think I have used larger capacitors for this.)

I do not get any match on the series variable with 200 pf, 100 pf and 0 pf to ground. 

What is the easiest thing to do now?

1.  Shorten the radials?
2.  Increase the series capacitance?
3.  Increase the capacitance to ground?

Is my gamma too short?

Thanks!

Chuck W5PR