Picking up last time where we left off, I bought a mid-1980s Uniden radio off of eBay for around $10. After a quick smoke test, I found that there was no transmit audio or receive audio. I swapped out what appeared to be a shorted 7808 8V regulator and a TDA1905 audio amp chip. The receive audio came back to life, but I was still in the dark with no transmit audio. Still, a step in the right direction.
