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
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?
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