05-09-2013, 06:43 PM
You can connect a 470K fixed resistor in parallel across the ends of the volume pot so that the detector circuit will see approximately 350K. The actual value presented to the grid of the 75 audio stage by the sliding contact is not critical. I doubt you would notice any difference.
The radio will work without the shield on the 78, but for best performance you would eventually want to find a replacement for it.
The radio will work without the shield on the 78, but for best performance you would eventually want to find a replacement for it.
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