Hi,
Longest wire I can get up here is my 80/40 meter
W7FG doublet about 125 feet long; center fed via
600 ohm ladder line. So, it is about 1/4 wave on
160 metes.
Using my tuner, with extra capacity
switched in at the output capacitor to yield about
450 pf at the output, I can reach an indicated
vswr of about 1.7:1.
However, it seems to me that feeding a 1/4 wave
antenna at the center is not the right thing to do!
So, given the achieved vswr here at the input of the
tuner, is it "safe" to use, feed the set up some power?
Seems that a LOT of voltage may sit at the tuner.....?
Capacitors in the tuner are rated at 6kv. Tuner inductor
is rated at 5kv, 30 amps.
For use with balanced ladder line, this particular
tuner uses a 1:1 current type, Ferrite core balun
at the tuner input, not as is usual at the output.
A a few years ago I was invited to take down my very
long wires I was using on 160; the wires happened to
cross plantation land leased by someone else!
Should I try this set up?
73, Jim KH7M
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