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ten telephone receivers through which a phonograph shouts all day at ten transmitters

TRANSMITTER TESTS

CD 1966086 E&MP33.019

Electric Power

no date

On the framework to which this engineer points are ten telephone receivers through which a phonograph shouts all day at ten transmitters just below them.

This is one of many tests to which transmitters are put in Western Electric laboratories of the Bell System. 


Original Caption by Science Service
Western Electric



National Museum of American History

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