Vintage Johnson Viking II CDC Civil defense Transmitter shorted power supply troubleshooting Part 2 

Nope, a customer unit. Looks like a barn find.

@@d-labelectronics here's an idea that the Customer can consider. THere are a plethora of AD 9850 and 51 DDC oscillators available that will tune the entire ham band. THey can't drive the buffer amp that exists in this unit because they put out only 500 uW or so but as a sine wave . However with a single Transistor amp based on 3866 or similar this cam be brought up to 15 mW or so . l normally this will drive in place of a crystal. (easily) . Thus the whole analogue osc can be replaced by something stable and modern and with a rotary control. The Toroid king in FL sells such an amplifier for around twelve dollars un built. Even better is the concept of injecting a couple of watts of AM or DSB into the SSB in port that some Johnson Vikings have. THat's to say all the amplification past this port is linear. Possibly this model does not have that capacity.

Normally the wire is a thicker gage, not as easily bent, Yes, I agree some insulative tubing would have been nice

It's not uncommon in older stuff. But I just fixed a Kenwood ts-529s that had an insulated wire rubbed through the insulation making contact with a terminal on a pot and wouldn't transmit. Couldn't believe that it rubbed through the insulation on that radio. Maybe it was in a vehicle at some point? Who knows. It also had a cold solder on the sidetone board. That's what I was looking at when I spotted the wire.