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    NR S-PM-57:1991

    Particular Specification - Closed Circuit Television Camera Columns For The Director Of Signals And Telecommunications

    Network Rail

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    NR BR 1693 ISSUE 1:1991

    Automatic Send and Receive Teleprinter.

    Network Rail

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    NR BR 1690:1991

    Keyboard Send and Receive Only Teleprinter Terminals.

    Network Rail

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    NR BR 1686 ISSUE 1:1991

    The Performance of Telecommunications Equipment Under Conditions of Electrical Interference

    Network Rail

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    NR BR 1641 : 1991

    Telephone Operators Directory Systems.

    Network Rail

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    NR BR 3007 ISSUE 2:1991

    Standard Maintenance Conditions For BR Maintained Telecommunications Equipment.

    Network Rail

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    NR BR 3041 : 1992

    Weatherproof Telephone for use at Level Crossings.

    Network Rail

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    NR BR 823 ISSUE 1 : 1995

    A CCTV Camera and Environmental Housing.

    Network Rail

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    NR BR 819 ISSUE 3 : 1995

    Earthing and Bonding of Telecommunications Cable Sheaths Separate Screening Conductors and Associate Lineside Equipment in AC Electrified areas.

    Network Rail

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    NR/GN/ELP/27003 ISSUE 2 : 1998

    Identification of Component Failures in 25 KV Overhead Line Equipment (NR/GN/ELP/27003)

    Network Rail