pdf Railway Train DispatchingTelephone Systems - Bull. 672A 1939 [LARGE FILE] Popular
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39_WE_RailwayTrainDispatchingTelSys_InstBull672A.pdf
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15MB. 108 pages. 1939. T-1665. Western Electric. Instructions for use. Instruction Bulletin No. 672A (orange cover). Selector Calling Equipment, Selector Keys, Way station selector equipment, 60A time sending set, Operation, 501 & 502 desk set boxes, 100E loud speaker set, foot switches, maintenance tests, parts. Replaced Instruction Bulletin 672, published ca. 1924 (gray cover). Contributed by Jeff Seidel.
Keywords: 60B vacuum tube; 2B circuit breaker; 221JB; 26A; telegraph; retardation; selector; 63A; 63B; way station; 127J; 341A; 70A; simplex; phantom; 60CG; 1142AB; 98B; 160C; 341A; composited; dispatcher; 100E
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