Japanese Tube Radio

[Celt]

Originally Posted by Jeffhs

BTW, I often wonder why those little 2-transistor sets had speakers; as I said above, they wouldn't work worth a plugged nickel unless you were close to at least one powerful station. These things may have produced enough volume for earphone listening (and probably did, with a strong local station), but how they could drive a speaker with only 2 transistors is way beyond me.

Quite simple Jeff. They were nothing more than a crystal radio with a two transistor amplifier in them!