Quote:
Originally Posted by wa2ise
With intercarrier buzz and other such imparements making a mess of TV sound FM, I figured that AM would be totally trashed...
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Using intercarrier sound with AM would be almost impossible. When the 405 line service was started in 1936 the sound quality was higher than any other transmission or recording medium available at the time. Apart from being mono, the basic quality of sound on System A was roughly equal to FM radio. It could of course be degraded by the receiver or before it was transmitted.