12-16-2013, 07:53 AM
I would replace that 2200pF film cap with the correct value mica. That is a padding cap which sets the osc tuning range for the police band. Trimmer 20 is in series with this cap so it affects the broadcast band also.
The original mica was a tight tolerance cap (1 or 2%) and if it is off value it will affect the calibration especially at the low freq end of the dial. If you still have the original Aerovox cap you can reinstall it.
I have a feeling that there is nothing wrong with your osc coil and the real problem is the off value film replacement for the 2000pF mica.
The original mica was a tight tolerance cap (1 or 2%) and if it is off value it will affect the calibration especially at the low freq end of the dial. If you still have the original Aerovox cap you can reinstall it.
I have a feeling that there is nothing wrong with your osc coil and the real problem is the off value film replacement for the 2000pF mica.
