05-06-2013, 02:34 AM
Verifying the oscillator is easiest of all. You just get another radio (a pocket transistor radio is fine for this). Tune that radio to the top of the band where there is no station. Then tune your Philco to around 1100-1200 KC and listen for a carrier "hiss" on the other radio. If you don't hear it, your oscillator is probably not working.