System of carrier current duplex telephone installed on electric railroad running in mountains near Neuchatel, Switzerland; telephone system is now used for technical communication between train and stations but is adaptable to connection with public telephone service.
Telephony on electric trains by means of trolley wire
Telephonie bord des trains electriques par l' interme diaire de la ligne de contact
Hasler Mitteilungen ; 9 , n 2
1950
5 pages
Aufsatz (Zeitschrift)
Französisch
© Metadata Copyright Elsevier B. V. All rights reserved.
Trolley wire for high-speed trains
Tema Archiv | 2004
Production of trolley wire for high speed trains
Tema Archiv | 2004
Radio telephony on railway trains
Engineering Index Backfile | 1924
|TROLLEY-WIRE MEASUREMENT DEVICE AND TROLLEY-WIRE MEASUREMENT METHOD
Europäisches Patentamt | 2018
|