I have been looking up schematics of the Crystal Set, from what i know You have an variable inductor, capacitor, germanium diode, and earphones. I know that you connect the inductor to the capaictor via a tap for tuning, and an antenna. From all the schematics that i have seen it says you must connect the diode, and the earphones to the inductor via a tap, why cant we connect it to the variable capacitor?