KPO Master Control, 1929
Anne Jetters, KPO's telephone exchange operator, and Orrin Brown, station technician,
try out the Hale-Chronicle station's new audio control room . The equipment was installed at
the same time as the new 5,000 watt Western Electric transmitter. It consisted of a master
control audio console and five rack pensl of audio amplifying and switching equipment.
An early condenser microphone can be seen at the operator's position next to Miss Jetters.
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