TETRA Base Station – Outdoor

BS421 outdoor TETRA base station:



  • Easy to install – anywhere : Direct mounting on antenna masts, buildings and towers.
  • Easy integration – open API : Unlimited integration into customized applications and existing system.
  • Energy efficient : Reduce OPEX with low base station power consumption.
  • Flexible and scalable : 100% IP-based technology provides full architectural network flexibility.
  • IP65-encapsulated TETRA base station: The BS421 outdoor base station is a mast-mountable and compact IP65-encapsulated TETRA communication system. This advanced and powerful base station transceiver and distributed controller is ideal for outdoor mounting because of its compact size and its rugged design. Additionally, it is equally well suited for indoor use.
  • Full network flexibility: The DAMM TetraFlex system is scalable and can handle sites of any size – from one-site solutions with local coverage to large-scale multisite solutions, using any combination of outdoor and indoor DAMM TetraFlex base stations. The intelligent DAMM TetraFlex software enables simple and smooth site expansion, even while the system is in operation. The 100% IP-based technology provides full architectural network flexibility with all network components connected in a single state-of-the-art infrastructure without the need for a central switch.
  • Secure and failure tolerant: Featuring full support for battery backup as well as redundant controllers, power supplies and carriers, DAMM TetraFlex meets your highest requirements on reliability. The intelligent distributed architecture replicates information to all sites in the network, avoiding any single point of failure.
  • Unlimited application integration : DAMM TetraFlex is supplied with Application Gateways for easy access to the Application Programming Interface (API), Packet Data Gateways and Voice Gateways, allowing you straight-forward development of customer-designed applications or integration into existing telephone systems and control room equipment. As an independent TETRA infrastructure provider DAMM TetraFlex Base Stations are IOP certified for full compatibility with all TETRA terminals, providing you with the option to freely choose your favourite terminal brand.
  • Wide range of advanced software tools : The DAMM TetraFlex system is available with a wide range of application software such as Voice and Data Log System, Dispatcher, Group Bridge and a comprehensive Network Management tool including subscriber management and network performance statistics.

Key Specifications

The DAMM TetraFlex Outdoor System consists of the Base Station Transceiver (BS421) together with the
Service Box (SB421) containing the base station controller and the power supply. The system is
pre-installed with the DAMM TetraFlex Software package.

  • DAMM TetraFlex System – Default settings
    • Organizations max : 1000
    • Profiles max : 10000
    • Subscribers max : 150000
    • Nodes max : 999
    • Voice GW Connection max : 32
    • Application GW Connections max : 20
    • Application GW Streams max : 100
    • Application GW Streams (Client) max : 32
    • Log Servers max : 25
    • Terminal GW Connections max : 10
  • Base Station Transceiver BS421
    • Frequency Bands : 300 to 825 MHz with Bandwidths  5/10/14MHz.
    • Transmitter and Receiver :

      • TX power at antenna connector: 0.5 W to 10 W TETRA remotely adjustable
      • RX sensitivity with diversity, static: -121dBm
      • RX sensitivity without diversity, static: -118dBm
      • RX sensitivity with diversity, dynamic: -118dBm
      • RX sensitivity without diversity, dynamic: -112dBm
      • Receiver Diversity: Dual as standard
      • Built-in duplexer: Combines TX and RX to one antenna
      • Redundancy: Hot Standby
      • Synchronization: Internal or external with GPS
    • Antenna Connections
      • Antenna set-up: One antenna per carrier, minimum two antennas
        for diversity
      • GPS antenna: One GPS antenna per carrier. Active (+5 VDC) or passive
  • Service Box SB421
    Base Station Controller

    • Max. distance SB421 – BS421: 100 m.
    • One SB421 controls four BS421 and power two
    • Redundancy: Hot Standby

( From https://www.dammcellular.com/)




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