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RV-M21 Tech Series Enclosure

The Raveon M21 Tech Series radios will work as base station, repeater or GPS transponder,  redundant power supply, and GPS transponder receiver which interoperates with our GPS radio modems.  Tech Series Modular Smart Radios Modems allow for more control over the system. RV-M21 are long-range narrow-band UHF or VHF data radio modems. RF output at 5W or less is available in the RV-M21.
It has a rugged power connector and a Myriad of IO interface options: RS-232, RS485,  RS-422, USB, GPIO, FIO…

Features include:

  • Myriad of IO features and GPS tracking capability.
  • Automatic RF output switching.
  • Dual GPS RF connections, enabling hot-standby of GPS-enabled radio modules.
  • Redundant radio module, which can be configured in reserve-standby mode (backup radio is powered down until it is needed)
  • hot-standby mode (backup radio is always powered)



  • Size: 482.6mm X 45.0mm X 375.0mm
  • Weight: 18 lbs
  • Radio Module Serial Communication Rates (programmable): 9600, 14400, 19200, 38400, 115200
  • Operating temperature range: -10°C to +55°C
  • Storage temperature range: 0ºC to +50ºC
  • Internal fuse: 6A

User Input/Output

  • Network Interface: 10/100 Base-Tx RJ-45 Connector
  • Console Interface: RS-232 DB-9, 9600 baud, DTE
  • Transceiver RF: 50 ohm N-Type
  • GPS Antenna connector option: TNC 50 ohm (2), 3.3V for amplified antenna
  • Power onnector: IEC C14 Inlet


  • Maximum RF power output: ½ – 5 watts
  • Maximum duty cycle: 50% at 2W, 25% at 5W
  • Maximum transmit frequency deviation: ± 2.25kHz
  • RF Bandwidth: 20MHz, no-tune
  • Occupied bandwidth: 11 kHz (12.5kHz channels) / 15.3kHz (25kHz channels)
  • TX spurious outputs: < -70dBc
  • Emissions designator: 11K0F1D (12.5kHz channels) / 15K3F1D (25kHz channels)


No-tune bandwidth 20MHz
RX selectivity -50dB (12.5kHz channel spacing)
-65dB (25kHz channel spacing)
Spurious and image rejection -75dB
RX inter-modulation rejection -70dB
Conducted spurious emissions -53dB


Number of channels 12
Horizontal accuracy (24 hour static) <2.5m 50%, <5m 90%
Acquisition (-130dBm, 50%) <40sec cold start, <10sec hot start
Sensitivity Tracking -150dBm, Acquisition -142dBm
NMEA Output sentences WPL, TLL, GLL, GSV, PRAVE
Position report rate, programmable 1 to 9999 seconds
Position report resolution 0.0001 degrees
Voltage report resolution/accuracy 0.1V/10%
Temperature resolution and accuracy 2 degrees C/2 degrees C
Number of digital inputs 2
Velocity resolution and accuracy 1km / 1km per hour
GPS connector SMA

Data Sheet


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