UHF FM 400mW transceiver module


The BIM3H is a miniature PCB mounting UHF radio data transceiver incorporating a received signal strength indicator (RSSI). It allows the simple implementation of data links at speeds up to 10kbps and distances up 5000 metres over open ground.


  • Designed to comply with harmonised radio standard EN 300 220-3
  • Designed to comply with harmonised EMC standard EN 301 489-3
  • Data rates up to 10kb/s
  • Usable range up to 5000m
  • Frequency 869.50MHz
  • Fully screened
  • Fast data settling time

Available for operation at 869.50MHz in the UK and Europe, the BiM3H radio module combines full screening with internal filtering to ensure EMC compliance by minimising spurious radiation and susceptibility.

Technical Summary


  • Single conversion FM superhet
  • SAW front end filter gives >50dB image rejection
  • 5 volt operation
  • Current consumption 15mA
  • -108dBm sensitivity @ 1ppm BER
  • RSSI output with 50dB range
  • Extremely low LO leakage, -125dBm typical


  • Transmit power: 400mW (26dBm, +/- 1dB)
  • Operating frequency 869.50MHz
  • 5 volt operation
  • Current consumption 310mA (typical)
  • Data rate: 10 kbps


  • Handheld terminals
  • EPOS and inventory tracking
  • Remote industrial process monitoring
  • Data loggers
  • Industrial telemetry and telecommand
  • In-building environmental monitoring and control
  • Vehicle and building security and fire alarms
  • Vehicle data up/download