TETRA Digital Channelized Repeater

Helios’ Digital TETRA Repeaters employ Software Defined Radio (SDR) technology based upon our FPGA & DSP Platform. This achieves high out- of-band rejection and high intra-Carrier interference com

Helios’ Digital TETRA Repeaters employ Software Defined Radio (SDR) technology based upon our FPGA & DSP Platform. This achieves high out- of-band rejection and high intra-Carrier interference compared to traditional Analog IF SAW filters. It also enables on-the-fly filter change/upgrade by software without an expensive hardware upgrade.

Our TETRA Repeaters help to extend the coverage of Public Safety and Critical Communications Networks. Helios offers complete and integrated solutions for TETRA Networks to ensure coverage of major public infrastructure; such as exhibition halls, airports, sports arenas, road and rail tunnels, hotels, convention centers, shopping malls, office towers, parking garages, wind farms, etc.


Key Feature

  •   TETRA, ETSI, CE Mark and RoHS Standards Compliant

  • Supports TEDS with 60KHz, 120KHz and 180KHz Filter Bandwidths

  • Meets 12 µsec Group Delay

  • Digital Time Slot based AGC and Squelch functionality

  • Oscillation Detection and Mitigation Function

  • RJ-45 Port to support IP Web Browser GUI for Local Control

  • Additional RJ-45 Port to support remote IP viewing via external ethernet modem.

  • SNMP v3 and remote viewing of GUI

  • Dry Contact Input Port to Alarm External UPS

  • Light weight and compact size, flexible wall and pole mount.

  • 87dB Gain; +36dBm DL; +30dBm UL

  • RoHS Compliant and CE Mark Compliant


Application

To expand public safety signal coverage of fill signal blind area where signal is weak or unavailable.

  • Outdoor: Airports, sports arenas, road and rail tunnels etc.

  • Indoor: Hotels, police stations, garages, power plants, exhibition halls, convention centers, shopping malls, office towers, parking lots etc.


SPECIFICATION
  • Frequency

    Uplink/Downlink: 380-385MHz/ 390-395MHz

  • Bands Support

    TETRA

  • Filter Design

    Channelized based upon Software Defined Filtering, and number of filters can be tunable or upgradeable by software. * Contact your local Helios Solutions sales representative to get more details for multiple sub-bands or channels requirement.

  • Max Gain

    87dB (+/-2dB)

  • Ripple in Band

    Max +/- 2dB

  • Max RF Composite Power

    Uplink/Downlink: +27dBm/+33dBm

  • AGC Range

    Max 30dB

  • Noise Figure

    Max 5dB @ Max Gain

  • Time Delay

    Max 12µs (depending on filter bandwidth and required adjacent channel rejection)

  • Local Monitor & Control

    LED Indicator and Laptop via IP Web Browser GUI and RJ-45 port to monitor & Control Power on/off, Over Power, Oscillation Detection, Isolation Measurement, Door Status, Temperature, Power Supply, VSWR, Output Power, Gain, ATT and etc.

  • Remote Monitor & Control

    Via Helios Netview OMC Software + Option embedded 2G/3G/4G Wireless Modem + Chargeable Li-ion Battery, SNMP V.3 compatible, Remote IP viewing +External Modem

  • Connector

    2*N-Type Female, 2*RJ-45 Port

  • Mounting Type

    Wall Mount or Pole Mount

  • Power Supply

    90~265VAC, 50~60Hz

  • Complies with

    ETSI EN 302 561 V2.1.1, ETSI TS 101 789-1 V1.1.2 (2007-04), EN 301 489-05 V2.2.0