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23 - Recent Developments in Telephone Train Dispatching Circuits - 1923

11 pages. By Wm. H. Capen, Engineering Department, Western Electric Company. In three installments:
1. History, Transmission Theory, Line Conditions and Cable Factors
2. Line Transmission and Cable Factors, of Outside Plant
3. Line Transmission Equipment, Train Dispatching Circuits and Location of Apparatus

Paper presented at the Annual Convention of the Telegraph and Telephone Section of the American Railway Association, held at Colorado Springs, September 19, 1923. Reprinted from RAILWAY SIGNALING, Vol. 17, No. 2, Feb. 1924 and following issues. 

Contributed by Karl Brose.

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