Hi Joe, I asume the B+ is the correct voltage, that aside I am trying to figure out what the osc. configuration is, it looks like a series tuned part Collpitts? I would say that it's bursting into life when connecting your scope probe because you are adding extra capacitance to the series leg, it sounds as though it's just below critical feedback, maybe check the inductor and the split capacitor network, asuming the transistor and DC voltages are something like. I would normally expect to see the end of the series leg connected to earth and not the emitter, any oscillator gurus out there?
Edit: Maybe it's a Clapp.
Lawrence.
Edit: Maybe it's a Clapp.
Lawrence.
