Antenna tuning (was RE: [Icom] 756 II Pro Questions)

[Cletus W Whitaker]

de WB2CPN South Central Pennsylvania  2004.05.05

If you find the no-tune frequencies are such that
they can't be lived with try adding a few feet of
ladder line between the tuner and the loop.  I do
recommend a good balun, 1:1 prefered.  You can also
insert a few feet of ladder line into the far side
of the loop, (just let it hang down), but place it
equidistant from the feed point.  As Adam explained,
at some frequencies your tuner is not happy
with where it's at.  Strange enough, I've de-Q'd
by adding lossy line.  Such as making the loop out
of the steel cattle fence wire the farmers use.
The efficiency decreases, (very minor), but we can't
have every thing.


73  Clete