On This Day in Telephone History October 31ST 1945 AT&T Reveals Secret Microwave Relay. Kept highly secret, the AN/TRC-6 microwave relay was demonstrated at 140 West Street, NYC and in Neshanic, N. J. First and only American built microwave radio relay to have seen actual combat use in both European and Pacific theaters of World War II.

On This Day in Telephone History October 31ST 1945

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On This Day in Telephone History October 31ST 1945 AT&T Reveals Secret Microwave Relay. Kept highly secret, the AN/TRC-6 microwave relay was demonstrated at 140 West Street, NYC and in Neshanic, N. J. First and only American built microwave radio relay to have seen actual combat use in both European and Pacific theaters of World War II.