C1 - 20pf variable capacitor.............L1 - 470uh coil

C2 - 20pf variable capacitor.............L2 - 470uh coil

C3 - .01uf ceramic.................................R1 - 2.2 KOhm

C4 - .01uf ceramic.................................R2 - 2.2 KOhm

D1+D2 - 1N4148/1N914 type silicon

This switch can be made to have as many positions as you require by simply adding more banks.