An Improved Three-Channel Carrier Telephone System
- 1 January 1939
- journal article
- website
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Bell System Technical Journal
- Vol. 18 (1), 49-75
- https://doi.org/10.1002/j.1538-7305.1939.tb00807.x
Abstract
This paper describes an improved three-channel carrier telephone system for use on open-wire lines. It employs recent advances in the telephone art to bring about many economies and circuit simplifications as compared with previous models of the three-channel system. A new type of automatic regulating equipment is included.Keywords
This publication has 2 references indexed in Scilit:
- Carrier Telephone System for Short Toll CircuitsTransactions of the American Institute of Electrical Engineers, 1929
- Carrier Systems on Long Distance Telephone Lines1Bell System Technical Journal, 1928