3 ms·

>Subcarriers are how they added [...] stereo to FM radio... Set your time machine for 1958, or follow this link [0] to see how RCA did both FM stereo (througho

by EEGuy 13y ago

>Subcarriers are how they added [...] stereo to FM radio... Set your time machine for 1958, or follow this link [0] to see how RCA did both FM stereo (throughout the article they call it "multiplex") and 67 KHz "SCA" subcarriers. Admire the awesome 5KW FM transmitter cabinetry and transformer shielding. [0] http://fmamradios.com/BTE-10B.html http://fmamradios.com/BTE-10B.html

jrockway 13y ago
One thing I find particularly interesting about articles from this time period is that Hz is not yet the name for 1/s, and so everything is in "cycles per second". According to Wikipedia, the transition started in 1960, so we're two years away when this article was published.