RRSignal.com Photo Gallery

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

Most viewed
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 Relays, transformers, & RPQ-41 rectifiers in signal room AB 94 on continuous platform near Jackson, Chicago Subway, CRT76 views
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 Montreal Installation Office Coding Unit (front view)76 views516A Multiplex Code Control System
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 S. Pac. Instrument House76 views
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 Looking west at Tower "A" - Allegheny Summit CTC - C. & O.76 views
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 Looking west from platform, White Sulphur Springs - C. & O. Rwy.76 viewsAuto. Signal Territory
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 Automatic signal installation between Burea, Ill. and Peoria on the Rock Island76 views
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 Red Oak to Balfour C.T.C. - C. B. & Q.76 views
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 HC-81 Highway Crossing Signal76 views
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 HC-81 Highway Crossing Signal76 views
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 HC-81 Highway crossing signal76 views
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 Mounting base of PTV-42 Relay - Front and rear view76 views
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 Inserting contact receptacle in mounting base of PTV-42 Relay76 views
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 PTV-42 A.C. Plug-In Relay76 views
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 RE-276 views
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 RN-18 76 views
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 RV-2 Rectifier76 views
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 How a Mechanically Rectified Decoding Circuit works. Bulletin 15776 views
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 Map of C.T.C. machine Installations76 views
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 Line drawing - How a Mechanical Facing Point Lock works76 views
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 "Between two wires" - Infomat76 views
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 "Greetings from a friend" (line drawing for advertisement)76 views
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 C.M.St.P. & P. R.R. - Airline Yard - Operating push button on Speed Control Panel76 views
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 Type 514 C.T.C. System - Orinoco, Venezuela76 views
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 Opportunities in Transportation Control Engineering76 views
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 Train Graph for C.T.C.76 views
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 Train Graph for C.T.C.76 views
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 Telephone Disconnector Switch76 views
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 MPR revised Maintainers Telephone Repeater76 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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 Direct Wire Control Panel for Tower A-5 Chicago75 views
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