|
Looks like the base frequency of the oscillator is 43.25kc. This is the freq. used for on/off. The rest of the frequencies are as follows:
Channel 42.0kc
Fine tunning 40.75kc
Volume 39.5kc
Brightness 38.25
Color 37.0kc
Tint 35.75
I think old tv nut is right. looks like reverse is a combination of the function frequency and the base frequency used for on/off. There is only one oscillator.
It also appears that the reverse function is am versus fm for the other functions. In the receiver reverse is picked off at the microphone passes through the agc stages then to the reverse detector (Half of a 6aw8 wired as a diode), then to a buffer anad is rectified to drive the motor reverse relay.
I have the schematic in the field service guide, but right now my scanner is down.
Bill R
|