I am building a crystal tester and the circuit calls for two 220pf
caps in the oscillator. I didnt have any of these caps in the junque
box so I thought about making a couple gimmick caps. I understand this
is done by twisting some insulated wires together. Is there some guide
to use that will give you an approximate value? In other words, if I
have twisted some #26 enameled wire together does 1" equal some pf
value? Any info you may have on this will be appreciated.
w5kcm