The heart of the transistor radio was the printed circuit bo

The heart of the transistor radio was the printed circuit board. This was a phenolic board with copper wiring etched onto one side and components mounted on the other side. The components were soldered to the copper traces and thereby connected to one another. {Aside: In the late 70’s and early 80’s I did some printed circuit layout for electronic devices I had designed.}t

This is pretty much what the interior of my Emerson radio looked like. {Of course I looked at it. That is what a proto-geek does!} The shiny cylindrical devices are the transistors. It worked pretty well and I could receive the Beaumont radio stations. The two I remember most vividly are KFDM (stilll alive and working on the am band at 560) and KTRM (at 990).