New communications systems of freight classification yard at Springfield, Mo; systems connect assistant general yardmaster with 5 pairs of paging speakers, 63 talk back speakers in yard, 5 indoor talk back speakers in yard buildings, and by radio with 7 locomotives used in yard and for serving industries throughout city.
Radio and loudspeaker systems expedite yard operations on Frisco
Ry Signaling Communications
Railway Signaling and Communication ; 43 , n 12
1950
4 pages
Aufsatz (Zeitschrift)
Englisch
© Metadata Copyright Elsevier B. V. All rights reserved.
Frisco streamlines Memphis yard
Engineering Index Backfile | 1957
Frisco streamlines Memphis yard
Engineering Index Backfile | 1957
Radio and talk-back speakers expedite yard operations
Engineering Index Backfile | 1954
Frisco installs retarding barriers
Engineering Index Backfile | 1938
Frisco installs retarding barriers
Engineering Index Backfile | 1938