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Communication Methods for Trains in Tunnels by J Cesar Perez Barbosa is a document available to read on EtoBox.
What is Communication Methods for Trains in Tunnels about?
The document discusses tests conducted by Bell Telephone Laboratories in the North River tunnel of the Pennsylvania Railroad to establish a practical method for communicating with moving trains in tunnels. It concludes that satisfactory communication can be achieved using frequencies between 25 and 1500 megacycles, with a focus on around 150 megacycles, and describes the setup and results of various tests conducted. The findings indicate that reliable communication can be maintained for distances up to appr
- Author
- J Cesar Perez Barbosa
- Language
- EN