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Automatic protection switching for TD-2 radio system

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1 Author(s)
Klemm, G. H. ; Bell Telephone Laboratories, Inc., Murray Hill, N. J.

Intercity transmission of television programs and telephone conversations is now provided via a network of TD-2 microwave radio relay equipment operating on a transcontinental basis. Whenever service interruption threatens because of equipment troubles or atmospheric disturbances in the transmission path, a switching system automatically and quickly substitutes a stand-by wide-band microwave radio channel for the defective channel. The circuits and operation of this switching equipment are described.

Published in:

American Institute of Electrical Engineers, Part I: Communication and Electronics, Transactions of the  (Volume:75 ,  Issue: 5 )