RRSignal.com Photo Gallery

Featuring Union Switch & Signal equipment photos
No touchups - No watermarks - Enjoy!
Fixed SQL errors - More photos coming in 2022


Last additions - Relays, Rectifiers, Cases & Houses
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Close-up of Plug-in Relays - Markem Yard - Illinois Central R.R.85 viewsJul 16, 2013
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Montreal Installation Office Code Rack70 views516A Multiplex Code Control SystemJul 16, 2013
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I.C. R.R. - Markem Yard Test set-up - Test Panel, Relays, and etc.68 viewsJul 16, 2013
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Close-up view of part of rack for Markem Yard showing wiring - Illinois Central R.R.74 viewsJul 16, 2013
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Section of test set-up of Markem Yard equipment67 viewsJul 16, 2013
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Illinois Central R.R. - Markem Yard - left hand side of test set-up70 viewsJul 16, 2013
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Wiring chase on back of relay rack69 viewsJul 16, 2013
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Test set-up of Illinois Central R.R. - Markem Yard Control machines and Relay racks and etc. in Department 5891 viewsJul 16, 2013
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Back view of factory wired relay rack69 viewsJul 16, 2013
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Factory wired rack for Plug-in Relays (all relays in place)72 viewsJul 16, 2013
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Plug-in Relay Racks - Roanoke Interlocking - N&W R.R. (back view)70 viewsJul 16, 2013
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Plug-in Relay Racks - Roanoke Interlocking - N&W R.R. (front view)73 viewsJul 16, 2013
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High C.T.C. System Relay Racks69 viewsJul 16, 2013
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High C.T.C. System Relay Racks72 viewsJul 16, 2013
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High C.T.C. System Relay Racks79 viewsJul 16, 2013
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Russian Relay Case72 viewsJul 16, 2013
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Coded Carrier Case75 viewsJul 16, 2013
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Plug-in relays in relay room - North Portal Interlocking - Chicago Subway and Elevated, C.R.T.81 viewsJul 16, 2013
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Relays, transformers, & RPQ-41 rectifiers in signal room AB 94 on continuous platform near Jackson, Chicago Subway, CRT76 viewsJul 16, 2013
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G.E. Transformers, power panel, RPQ-41 rectifiers, and relay panel in signal room AB-94 on continuous platform near Jackson, Chicago Subway, CRT80 viewsJul 16, 2013
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Relay room at 13th St. Interlocking showing plug-in relays, RPQ rectifiers, and ground detector apparatus, Chicago Subway, CRT85 viewsJul 16, 2013
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Rear of Relay Rack in Relay Room 13th St. Interlocking, Chicago Subway, CRT77 viewsJul 16, 2013
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Compressor in sheet steel case59 viewsJul 16, 2013
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4.2 cu. ft. Penna. R.R. Compressors68 viewsJul 16, 2013
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4.2 cu. ft. Penna. R.R. Compressors58 viewsJul 16, 2013
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Style D Sheet Steel Instrument Cases with two belt-driver air compressors - PRR63 viewsJul 16, 2013
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Compressor in sheet steel case64 viewsJul 16, 2013
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Compressor units in sheet iron case63 viewsJul 16, 2013
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Air compressor in case75 viewsJul 16, 2013
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Canadian National R.R. - Montreal Yard (Instrument Case Compressor) (side)62 viewsJul 16, 2013
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Canadian National R.R. - Montreal Yard (Instrument Case Compressor) (back)63 viewsJul 16, 2013
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Canadian National R.R. - Montreal Yard (Instrument Case Compressor) (front)65 viewsJul 16, 2013
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