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Article | REF: TBA3047 V1

ERP fire safety - Technical Instruction No. 250 on monitoring the continuity of radio communications

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Publication date: December 10, 2013, Review date: March 1, 2021 | Lire en français

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    3. INPT technical specifications

    The key features of the National Shared Communications Infrastructure (INPT) are as follows:

    • frequency bands between 380 and 430 MHz ;

    • TETRAPOL technology from the V35 version;

    • modulation: GMSK (Gaussian Minimum Shift Keying) ;

    • channel spacing: 10 kHz ;

    • measured channel width: 10 kHz.

    TETRAPOL is a digital radiocommunication standard, mainly implemented in equipment used by security forces, such as the ANTARES system used by civil protection, fire departments and emergency medical services.

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