UHF Narrow Band FM Transmitter

NTX2B transmitter

Frequency:425MHz - 480MHz

Available for licence-exempt operation in the 433MHz (EU) and 458MHz (UK) bands, the NTX2B module combine effective screening with internal filtering to minimise spurious radiation and susceptibility thereby ensuring EMC compliance.

It can be used in existing low data rate (<10kbps) applications where the operating range of the system using TX2 transmitter and RX2 receiver need to be extended. They are particularly suitable for point-to-point and point-to-multipoint wireless links where longer ranges are required at low data rates.





  • Conforms to ETSI EN 300 220-3 (radio) and EN 301 489-3 (EMC)
  • NTX2/NRX2 equivalent standard frequencies - 434.075MHz, 434.650MHz and 458.700MHz
  • Factory programmable custom frequency (425 - 480MHz). No crystal lead-times
  • Custom frequencies available in 433MHz (EU) and 458MHz (UK) band
  • Data rates up to 10kbps
  • Usable range over 500m (with matching LMR2)
  • 12.5kHz / 20kHz / 25kHz Channel spacing (factory set)
  • Feature-rich interface (true analogue and/or digital baseband)
  • Longer range compared to Wide Band FM modules


  • Sensor nodes
  • Radio model control
  • EPOS and inventory tracking
  • Remote industrial process monitoring
  • Telemetry, telecommand and telecontrol
  • In-building environmental monitoring and control
  • Security and fire alarms
  • Wireless door entry systems
  • Vehicle/machinery controls

Technical Summary

  • Transmitter – NTX2B
  • Fully integrated sigma-delta PLL synthesizer based design
  • High stability TCXO reference
  • Supply 2.9V - 15V @ 18mA (internal 3.0V LDO voltage regulator)
  • Data bit rate: 10kbps max.
  • Transmit power: +10dBm (10mW)
  • Dimensions 43 x 15 x 5mm (fully screened)

Evaluation platforms: Universal Evaluation Kit or Narrow Band Evaluation Kit with SIL carrier board