I'm a newbie to this forum trying to get some expertise on a problem I have repairing a Realistic DX-302 short wave radio. This radio was (still is) a nightmare. Some of the parts were replaced with non-replacement parts and some "new" parts were added which are not part of the schematic. Anyway most of the radio is now working except that the MHz tuning is not tracking properly. The service manual says that the MHz oscillator should be 55.5 MHz when the dial says "0", 56.5 for "1", 57.5 for "2" ... 83.5 MHz for "28" and 84.5 for "29". So this gives a total of 30 freqs for 30 numbers; so far so good. On this radio the "0" indicator (for 0 to 999 Khz) tunes perfectly at 53.5. I cannot get it to tune or track per the service manual. I can tune the oscillator for the correct frequency but then it doesn't receive any stations. If I tune for a station then it's good for only that MHz and doesn't track so WWV will be on 7.000 Mhz instead of 5.000 Mhz and some of the bands are dead because the mute cutes in between bands where the signal should be. It's a complicated problem because the MHz readout is actually a digital switch controlled by the MHz variable capacitor. My question is could someone take a look at the schematic and see what components are critical with the oscillator circuit that might make it tune off the desired freqs? Q401 is the 1st oscillator on the schematic. Thanks in advance!