M7-GX GPS Transponder

GX GPS Transponders

If you use the M7 and need a GPS transponder, you can use the M21G GPS transponder and it can communicate with the M7.

The Raveon model M21 GX transponder is a rugged high-speed UHF and VHF 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 M22G miniature data radio also can do GPS Transponding.

Raveon’s GPS transponders automatically reports its status and position are user-configurable intervals and events. With an ultra-fast PLL and protocol, hundreds of M21 transponders in the same location can all report, with no interference or loss of data.

The M21 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: 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: Will periodically transmit its location, along with voltage, temperature, input status, speed, direction, and UTC time. It will also receive the location of other M21 radios in its radio range for display on a GPS plotter or hand-held GPS connected to the M21 GX’s NMEA RS-232 interface.  A Myriad of other IO features in this M21 transponder.
RavTrack PC: Will periodically transmit its location. It will also output the location of other RV-M21 Tech Series GPS 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-M21 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 M21 GX radios in its radio range for display on a GPS plotter or hand-held GPS connected to the RS-232, RS-485, or USB interface.
Repeater: Any M21 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 M21 GPS transceivers, can track up to 20 radios with one-second updates, 200 with 10-second update, or 2000 with a 100-second update rate.  Is the fastest most efficient UHF AVL radio available. Seewww.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

  • 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).

Specifications

All measurements made per TIA-603-B
General

    • Frequency:
      • Model RV-M7-VA 136 – 155MHz
      • Model RV-M7-VB 150 – 174MHz
      • Model RV-M7-UJ 380 – 400MHz
      • Model RV-M7-UA 403 – 434MHz
      • Model RV-M7-UB 419 – 440MHz
      • Model RV-M7-UC 450 – 480MHz
    • 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

Downloads

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…

Accessories

Part Number Image Description
RT-CB-H1 DataRadio DC power cable DC Power Cord. Note: Each RV-7 comes standard with one power cord included with each unit.
RV-M7-DIN dataradio DIN clip DIN rail mounting clips.
RT-M7-HS M7 heatsink Heatsink Option for M7 series of data radios. With this option, the M7 will operate at up to 100% duty cycle with an ambient temperature of 45C. With air circulating on the heatsink fins, the M7 may be operated at 100% duty cycle up to 50C.
RT-CB-A1 dataradio power cable DC power cable for M7 series radios with automotive lighter adaptor on one end. 3 amps maximum current capability. 6′ long.
RV-SP-1 6A366-1 Surge Protector 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.
M7-USB USB USB option replaces the standard DB9 RS232 serial connector with a USB 2.0 MINI-B connector and internal a USB-Serial bridge. All features and functions of the M7 remain available via the USB connection.
for a picture of the M7 with the RT-C9-USB option installed.
M7-USB Option Technical Information
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