Airy R. Bean wrote:
That's why the contact is spring-loaded in some way.

"Ken Scharf" wrote in message
.. .

The biggest problem with a home brew rotor inductor
is going to be a low resistance contact with no
dead spots as the coil is rotated.



But if you need to install the tuner outdoors
remote controled via servo motors, guess how
long that sliding tap will give good contact?
At least sealed relays can be used for the
tap switch.