12:21

Armstrong: the Tragic History and Physics of FM Radio

12:31

The Superheterodyne Radio: No really, that's its name

11:10

Positive Feedback: Edwin “Howard” Armstrong 1st Great Invention!

16:32

Ernest Rutherford Biography

9:10

Module 17: Heterodyne Receiver –and Image Rejection

18:22

Ohm's Law: History and Biography

31:39

The Secret Life of the Radio - Remastered

12:05

#339: Basics of a Super-heterodyne Receiver - how it works, and a peek at the signals