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Raveon’s RV-M21  Tech Series data radio modems are industrial-grade, high-speed, data radios designed for telemetry, SCADA, AVL, wireless data, mobile-data and remote control applications. The RV-M21S-VC version is FCC approved in the 220MHz band,  216MHz-222MHz.  The internal radio module is also available as an M8 OEM RF modem module. This enclosure has a myriad of IO options.

Designed by Raveon for long-range reliable communication using high-performance RF circuitry and filters, it is also feature-rich. Raveon’s data radio transceivers increases data throughput in narrow-band wireless systems. Included in each unit, are advanced networking, error correction, and diagnostics.

The M21S is the most efficient and economical data radio available. The Optional internal GPS ( GX option) enables the M22G to transmit its position, data, and status (voltage, speed, heading, temperature, I/O bits.) a pre-set intervals using either conventional carrier-sense methods or with efficient TDMA channel access. A GPS tracking system built with M21G transceivers, can track up to 20 radios with one-second updates or 200 with 10-second updated. The M21 is the fastest most efficient 220MHz radio available. See details on its GPS tracking and TDMA abilities.

The M21 leads the industry in many areas including technology, features, and price. It is one of the smallest data radios in its class. It is one of the most rugged data radios made. It is one of the lowest power-consumption radios available. And its price will pleasantly surprise you. The radio modem modules inside the RV-M21 enclosure are available for OEM use.  It has a myriad of IO options.

The Tech Series enclosure has a myriad of IO options:

  • RS-232
  • RS-422
  • RS-485
  • USB
  • GPIO  (digital, voltage reading, Switched DC out)
  • Analog
  • FIO    (digital IO)



Applications and Markets:

For IP67 Positive Train Control

The RV-M8S-VC radio is available in an very rugged IP67 enclosure called the M9.  The M9 data transceiver is a rugged MIL-STD-810 compliant ½ – 5 watt VHF, UHF, or 220MHz data radio mode.

Interface options include Ethernet, dual serial ports and USB. It has an optional GPS for use in AVL and asset tracking applications. Other options include tilt-sensor, and AES encryption.

If you need a 25 watt power amplifier built in, please let us know.

The enclosure is rugged and IP67 rated so it is waterproof. Protected from immersion between 15 centimeters and 1 meter in depth, limited ingress protection.  The over-air protocol is compatible with all other Raveon data radio modems. This M9 is popular for aviation and rugged military vehicles.



Here are examples where Raveon’s 220MHz wireless modems and other bands are used:

Mobile and Fleet Communications

  • Positive Train Control
  • Differential GPS Navigation
  • Computer Aided Dispatch
  • Remote Data Base Access
  • Traffic Monitoring and Control

Industrial Data Communications

  • Oil and Gas Field Monitoring
  • Irrigation Control
  • Environmental Control and Monitoring
  • Water and Waste Water Management
  • Security / Alarm System Management
  • Factory Automation

GPS Tracking

  • Proximity Alerting and Speed monitoring.
  • Race Car Monitoring in Real time.
  • Automatic Vehicle Location (AVL)
  • Differential GPS Navigation
  • Differential and RTK Survey Corrections
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