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Philco Model 38 Code 123 Oscillator Problem
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Picking up from where I left off with the Model 38 oscillator coil problem; Twelve turns were wound onto the oscillator coil at the bottom of the resonant winding and the oscillator started working. Oscillates over entire range. Had very weak signal from antenna terminal and found the primary of the antenna coil open. Removed the old winding and wound 12 turns (no. 32) on and was able to get improved signal from the antenna terminal.

Now I want to align the oscillator and antenna coil. My problem is that I had to replace the tuning capacitor scale and now I don't know whether the scale should be balanced with the range of the tuning capacitor or whether I do something like open the the tuning capacitor fully and set the end of the scale with the full open capacitor.

The above may not be very clear but what I want to do is set the scale reading accurately with the tuning capacitor location.

Can anyone provide me with the procedure?

Gene, K4ZQM


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Philco Model 38 Code 123 Oscillator Problem - by younggene - 06-16-2016, 07:37 PM



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