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GPS Radio Transponder

M7 GX GPS Transponder

The Raveon model M7 GX transponder is a rugged high-speed UHF (450-480MHz) GPS transponder with a built-in 12-channel GPS receiver.  It has up to 5 watts of RF power output, and operates as both a GPS transponder for tracking, and a radio modem for sending and receiving data.

The M7 GX automatically reports its status and position are user-configurable intervals and events.  With an ultra-fast PLL and protocol, hundreds of M7 GX transponders in the same location can all report, with no interference or loss of data.

The M7 GX Transponder may be user-configured for a variety of applications.  One simple command is used to program it to work in any of these configurations:

Transponder:

The M7 GX will periodically transmit its location, along with voltage, temperature, input status, speed, direction, and UTC time.  It powers-down the radio and GPS when not in use, reducing its average current draw to less than 30mA.

GPS Display:

The M7 GX will periodically transmit its location, along with voltage, temperature, input status, speed, direction, and UTC time.  It will also receive the location of other M7 GX radios in its radio range for display on a GPS plotter or hand-held GPS connected to the M7 GX’s NMEA RS-232 interface.

RavTrack PC:

The M7 GX will periodically transmit its location.  It will also output the location of other RV-M7 radios in its radio range for display on the RavTrack PC software program.

Plotter Display:

If you already have a gps plotter, you may connect it to the RV-M7 with the –LX option.  This gives the unit all the features of the –GX version with the GPS, but uses your GPS NMEA data feed as the source for its GPS signal.  It will output the location of other M7 GX radios in its radio range for display on a GPS plotter or hand-held GPS connected to the RV-M7’s NMEA RS-232 interface.

Repeater:

Any M7 GX may also be a store-and-forward repeater.  With a 3mS attack time, the repeated signal has only milliseconds of latency, and coverage can be 10s of miles.

 

A GPS tracking system built with M7 GX transceivers, can track up to 20 radios with one-second updates, 200 with 10-second update, or 2000 with a 100-second update rate..  The M7 is the fastest most efficient UHF AVL radio available.  See www.ravtrack.com for more details on its GPS tracking and TDMA abilities. 

Markets:

  • Construction: Know where your assets are and how they are used.
  • Public Safety:  Real-time situational awareness.
  • Asset tracking:  Security and real-time control
  • Desert Racing: Chase Trucks and pit crews easily find locate their racer.
  • Mining: Real-time monitoring and accident reduction.
  • Golf:  Track golfcarts and maintenance equipment.
  • General Features
  • Specifications
  • Downloads
  • Accessories
  • Transmissions include ID, position, speed, heading, voltage, temperature, input/output status, UTC time, and proximity.
  • Ultra-fast 3mS TX-RX switching and 4-level GFSK modem allows truly "Real Time" tracking and status.
  • Outputs and accepts NMEA 0183 GLL, TLL, WPT, GSV, and PRAVE messages.
  • High-speed over the air data rates. 19200bps in 25kHz channel, 9600bps in 12.5kHz
  • Built-in TDMA channel access allowing truly real-time tracking (200 transmission in 10 seconds)
  • Very low current draw. As low as 25mA average
  • 16 bit addressing for up to 65,525 different unique IDs per channel.
  • Programmable proximity alert ( 1-9999 meters) and programmable position report rate (1-9999 seconds).

All measurements made per TIA-603-B
General

  • Frequency................... Model RV-M7-UC 450 - 480MHz / Model RV-M7-UA (export only) 403 - 434MHz
  • Size ................... 5.0 X 3.76W X 0.95H
  • Weight ................... 6 ounces (0.17kg)
  • DC input voltage ................... 10-16V DC
  • Typical current draw, receiving, over-the-air rates ................... < 4800bps <115mA
  • Typical current draw, receiving, over-the-air rates >= 4800bps ................... <125mA
  • Current draw when transmitting data ................... <1.5A max, 1.2A typical at 2watts / <2.7A at 5watts
  • Low Power Mode standby current (AT command) ................... <30mA
  • Sleep Mode standby current (hardware control) ................... <1mA
  • Frequency stability ................... ±1.5ppm
  • Over-the-air baud rates (programmable) ................... 4800, 5142, 8000, 9600, 19200

    • Note: Contact the factory for enhanced-sensitivity applications (1200 & 2400 baud)
  • Internal data buffers (transmit and receive) ................... >2000 bytes
  • Operating temperature range ................... -30ºC to +60ºC (-30ºC to +80ºC storage)
  • TX-RX and RX-TX turn-around time ................... <3mS
  • Power on time to operational ................... <500mS
  • LPM Standby to operational ................... <20mS
  • Internal fuse 3A mini blade. Littlefuse part number 0297003 or Raveon part, number 1X726-3
  • FCC ID Model RV-M7-UC ................... SRS-RV-M7-UC

    • All other models for export or OEM use
Transmitter
  • Maximum RF power output ................... ½ - 5 watts
  • Maximum duty cycle ................... 100% 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)
Receiver
  • Typical RX sensitivity (1% BER)
    ...................19200bps, 4-level, 25kHz channel -108dBm
    ...................9600bps, 4-level, 12.5kHz channel -108dBm
    ...................4800bps, 2-level -116dBm
  • No-tune bandwidth ................... 20MHz
  • RX selectivity ................... -50dB (12.5kHz channel spacing) / -65dB (25kHz channel spacing)
  • Spurious and image rejection ................... -75dB
  • RX intermodulation rejection ................... -70dB
  • Conducted spurious emissions ................... <-53dBm
User Input and Output Signals
  • Serial port baud rates ................... 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200
  • Voltage levels ................... RS-232, RS-422, and RS-485 complaint levels
  • Modem handshake signals ................... RTS, CTS, DTR, DSR, CD
  • Transceiver RF ................... 50 ohm BNC (TNC on -WX version)
  • GPS Connection ................... SMA 50 ohm, 3.0V for amplified antenna
  • Power ................... B+ input and Ground
  • Digital Inputs ...................3
  • Power Connecto ................... Phoenix 18 36 18 9 ( Raveon P/N 1J165-3 )
GPS and Transponder Specifications
  • Number of channels ................... 12
  • Horizontal accuracy (24 hour static) ................... <2.5m 50%, <5m 90%
  • Acquisition (-130dBm, 50%) ................... <40sec cold start, <8sec 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

Download Datasheet. (.pdf) RV-M7 GX Datasheet

Download Technical Manual (.pdf) RV-M7 GX Technical Manual

DownLoad Quick Start Guide (.pdf) RV-M7 GX Quick Start Guide

CAD Drawings:

RV-M7   Mechanical Dimensions (pdf)  Mechanical drawing of the RV-M7 housing.

RV-M7 WX   Waterproof Enclosure Option (pdf)  Mechanical drawing of the WX option for the RV-M7 and RV-My-GX.

Solid Works 3D Step Files:

RV-M7-GX  3D Model (.easm)  3D model of the RV-M7-GX GPS Transponder.

Programming Software:

Radio Manager (download)   Radio Manager is a Windows XP/Vista software application that is used to configure Raveon's radio products.  It is compatible with all Raveon models, and provides configuration management, as well as programming assistance, diagnostic information, and a helpful "band scope" feature.  More...

Part Number Description
RT-CB-H1

DC Power Cord.
Note: Each RV-M7 comes standard with one power cord included with each unit.

RV-SP-1 In-Line DC Surge Protector. The RV-SP-1 is designed to be plugged in-line with the DC input to electrical devices that may be subject to over-voltage (> 16V) events, large transient voltage spikes, electrical noise, or RF noise. It filters the DC and protects the connected device from over-voltage and transient events.