Science: Multiplex Radio

U. S. Navy officials, visiting last fortnight at Gloucester, Mass., were treated to a demonstration remarkable even in this radio age. In the laboratory of John Hays Hammond Jr., they beheld that young wizard (aged 37) transmit eight radio messages simultaneously upon a single ether wave and receive them again, all separate and distinct, using single sending and receiving instruments at both ends of his operation.

A year ago (TIME, July 28,1924), Wizard Hammond made this demonstration before the Italian Government when he was winding up his deal with Premier Mussolini and...

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