"Marvin Rosen" wrote in message
...
What if i were to use the same type of vc on the outside
of the radio that is incorporated inside the radio?
I could mechanically calibrate it using a radio that has
a digital readout.

The lead dress (your shielded cables) would affect the total capacitance,
and most likely knock out the top end of the dial, and most certainly would
not work on FM at all.