This is a well-done film from the 1940s showing the basics of AM
radio broadcasting — and it also beautifully evokes the Old America
of the time, before the current dumbing-down and racial decline
really took hold. Make sure and watch it in full screen, as the
resolution is quite good:

http://3950.net/2013/06/how-sound-is...ted-via-radio/

Notice the station is using 833A tubes as _drivers_! And gotta love
that open-wire feedline.

73,

Kevin.
--
http://nationalvanguard.org/
http://kevinalfredstrom.com/