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New 12-channel carrier system for extended-area trunk and subscriber service

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1 Author(s)
O. A. Jorgensen ; General Dynamics/Telecommunication, Rochester, N. Y.; Vacuum Electronics Corporation, Plainview, N. Y.

The design considerations and development of a 12-channel carrier system for trunk and subscriber service are described. The dual-sideband AM (amplitude-modulated) system uses one modulation step only and has a grouped and a stacked frequency allocation for use with and without repeaters respectively. Compandors supplied on an optional basis and the use of high-gain amplifiers make it advantageous to use wire and cable facilities at frequencies as high as 350 kc.

Published in:

Transactions of the American Institute of Electrical Engineers, Part I: Communication and Electronics  (Volume:82 ,  Issue: 5 )