The Periscope Films Rabbit Hole

[Arnold]

I've fallen down again. This time Telephone stuff. While watching this film I discovered what could have been the inspiration for the Empire's Death star, thanks again ma bell.

got the the final 5 minutes.

 

[bbchien]

I remember wrapping my head around this as I built a 5 PNP207 transistor radio on a breadboard.....(PNP= Pos-neg-Pos).