In the long, narrow control room of Columbia Broadcasting Co., high above Fifth Avenue, Manhattan, are switches, plugs, tubes, grills, meters, other complicated instruments of broadcasting science. At 6 a. m. one cold, black morning last week, there stood brawny Harold Vivian, chief control room operator. He had been on duty all night making tests. Now he was watching the chief engineer and assistants inspect apparatus, establish contact with outlying stations. A hushed, nervous expectancy filled the room. In a half-minute they would begin broadcasting to 59 stations in the U. S. and...
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