500mW Multichannel VHF transceiver

Frequency:3MHz segment in 140 - 175MHz

SHX1 is small multi-channel 25kHz narrow band VHF transceiver with up to 500mW RF power output.

It is usable for 144MHz band amateur, 151MHz US MURS and European 169MHz band high power applications.


  • Conforms to ETSI EN 300 220-3 and EN 301 489-3
  • High performance double superhet PLL synthesizer
  • 500mW RF power output
  • Data rates up to 5 kbps for standard module
  • Usable range over 5km
  • Fully screened. Low profile
  • Feature-rich interface (RSSI, analogue and digital baseband)
  • Incorporate a 1200baud modem
  • Re-programmable via RS232 interface
  • Low power requirements

Technical Summary

  • Operating frequency: Any 3MHz segment in 140 - 175MHz
  • 8 parallel or 255 serial channels
  • Transmit power: 500mW (+27dBm) nominal
  • Supply range: +5V regulated
  • Current consumption: 280mA (at 500mW output) transmit, 20mA receive
  • Data bit rate: 5kbps max. (standard module)
  • Receiver sensitivity: -118dBm (for 12 dB SINAD)
  • Size: 67 x 30 x 9mm


  • Amateur radio
  • AMR
  • MURS units
  • Industrial telemetry and telecommand
  • High-end security systems
  • APRS systems
  • Vehicle data up/download
  • ROV/machinery controls