Hi Gang,
After reading about the German auto tuner item I thought I might
mention what I have used that works well and doesn't break the bank.
AT-11Pro tuner with the matching 4 to one balun attached directly to
the back of the tuner with a double male connector and powered by self
contained battery pack of AA cells will match just about anything you attach
to it and do the job from 160 to 6 meters.
There are a few combinations that it doesn't work well with but if
the antenna is say a typical 80 meter doublet fed with ladder line it will
match it on all harmonically related bands, NO problem.
Good for a hundred watts and can be operated with QRP levels in the
AUTO tune position its a hands off method that sets you back about $230 out
the door (not including the battery mod or weather proof box).
On Field Day this same system was directly attached to the dipole at
the feed point and suspended inside a plastic freezer box and hauled up a
tree and worked fine.
Michael Baker K7DD
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