In my case I can't have a look into the tuner or handle alligator clips as
the tuner must be remotable and outdoors. The shack will be soon located
in
the cellar and it will not be possible to pass the ladder line through the
house. A coax would be rather acceptable indoors. So I am looking for a
good
solution for the inductors: roller inductors, tapped inductors, tapped
inductors with small variable serie capacitors. Driven by servos or
stepper
motors. Maybe I don't need a fine tuning of the inductors because of the
main variable capacitor could be enough.
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Provided there is not too much metal around you can readily pass a balanced
feeder 75 -300 or 450 Ohms ribbon through the house.
I use a 'Doublet' 2x 21 metres with a balanced 450 Ohms ribbon feeder
running into and over the loft and so into the ground floor shack with a
balanced to unbalanced matching unit in the shack next to the transceiver .
No RF(I) problems ! Max RF power 100W-PEP

Frank GM0CSZ / KN6WH