My old Bearcat BC-50XL scanner is showing its age. The squelch has stopped working. It’s probably bad capacitors, so I guess it’s time to build that capacitor ESR tester I’ve been designing off and on for the past decade.
I purchased a service manual for it some time ago. I finally got around to scanning it. I put it up in my Liberated Manuals archive. I’ll send it around to the other usual manual archives as well.