I was wondering what else it used besides resistors :) One could replace the tran******s with 6C4's. John At 11:10 PM 3/3/2006, Perry Sandeen wrote: >OOPS!! > >It uses 7 GASP, WAIL, KNASHING OF TEETH, very cheap TRANSISTORS and >can be built on Rat Shack perf >board with no sweat. So solly, Perrier