Info Needed - Regency TM-H2 Monitor

I have a Regency Monitor Radio (cir. 1973) Model TM-H2. This monitor takes the solder in crystals rather than the newer style plug in crystals. I would like to locate a source or manufacture to supply the following frequencies: 155.505, 159.225 & 151.430. I'm not sure of the I.F. for this model. The newer monitors with plug-in crystals use 10.7 ( HIGH BAND = LISTENING FREQUENCY - RADIO I.F. (10.7) Then Divide by 3. Can anyone tell me the correct I.F for this model and a source or manufacture of solder in crystals? thanks. ([email protected]

Jim