RRSignal.com Photo Gallery

Featuring Union Switch & Signal equipment photos
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Fixed SQL errors - More photos coming in 2022

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Union Pacific R.R.- carrier equipment in C.T.C bldg. - Salt Lake City76 views
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Diagrams Retarders "Get switches closer together" and "You do not need additional track spacce for detector circuits.76 views
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Motor Car Indicator76 views
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Line Dwg. on Two-Three-Four Indication Cab Signal Equip. Boxes76 views
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Retarders - Let Air do the work76 views
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Map of C.T.C. machine Installations76 views
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Certificate of Cooperation76 views
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Ad. V-6296 - C.T.C. Abandonment of 2nd Main Track76 views
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Ad. V-6294 - Retarder "For million dollar savings"76 views
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Schematic Diagram for Multiplex Code Control System76 views
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Opportunities in Transportation Control Engineering76 views
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Air Traffic Cotnrol Transponder (Radio Beacon)76 views
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Train Graph for C.T.C.76 views
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Type L Form 510 Code Control System for single station76 views
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Laboratory exhibit C.T.C. machine76 views
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Laboratory exhibit C.T.C. machine76 views
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High C.T.C. System Relay Racks (516)76 views
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High C.T.C. System Relay Racks (516)76 views
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C.T.C. Code Line Unit, 220 Volt, 0.4A DC76 views
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Pocatello Cranger Demonstration Racks76 views
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Aden - Olive Hill75 views
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Limeville - Parsons75 views
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Columbus - Cummings75 views
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Shelby75 views
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Double location searchlight signals75 viewsMilw.-Rock Island between Birmingham, Mo. & Moseby Jct.
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Direct Wire Control Panel for Tower A-5 Chicago75 views
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Moseby Jct. CTC75 views
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CTC machine, Bureau to Spring Valley75 views
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Thornton75 views
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Wampum - B.& O. Jct. CTC machine - "J" tower75 views
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Looking west at signal location R4, R6, Wampum75 views
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Westbound freight and eastbound passenger passing signal locations L-4, L-10 Wampum, located at overhard crossing of P.R.R.75 views
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