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indianabroadcastpioneers.orgfrequency (50kc) alternator from GE that was designed by Ernst Alexanderson. By inserting a water-cooled carbon microphone into the antenna feed, Fessenden

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Page 1: indianabroadcastpioneers.orgfrequency (50kc) alternator from GE that was designed by Ernst Alexanderson. By inserting a water-cooled carbon microphone into the antenna feed, Fessenden
Page 2: indianabroadcastpioneers.orgfrequency (50kc) alternator from GE that was designed by Ernst Alexanderson. By inserting a water-cooled carbon microphone into the antenna feed, Fessenden
Page 3: indianabroadcastpioneers.orgfrequency (50kc) alternator from GE that was designed by Ernst Alexanderson. By inserting a water-cooled carbon microphone into the antenna feed, Fessenden
Page 4: indianabroadcastpioneers.orgfrequency (50kc) alternator from GE that was designed by Ernst Alexanderson. By inserting a water-cooled carbon microphone into the antenna feed, Fessenden
Page 5: indianabroadcastpioneers.orgfrequency (50kc) alternator from GE that was designed by Ernst Alexanderson. By inserting a water-cooled carbon microphone into the antenna feed, Fessenden
Page 6: indianabroadcastpioneers.orgfrequency (50kc) alternator from GE that was designed by Ernst Alexanderson. By inserting a water-cooled carbon microphone into the antenna feed, Fessenden