Methods whereby 4-channel equipment giving automatic level control feeds any or all cars with radio or recorder programs and train announcements; wire recorders best suited because of their long playing ability, immunity to shock interference and lack of loss of fidelity due to wear; equipment by Farnsworth Television and Radio Corp.
Passenger entertainment systems for railroad use
Tele-Tech
Tele-Tech ; 6 , n 7
1947
2 pages
Article (Journal)
English
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Engineering Index Backfile | 1955
|Engineering Index Backfile | 1955