VHF MURS Band Data Radio / Telemetry Transceiver

VHF MURS band data radio
Raveon’s RV-M7-VM data radio modem is a high-speed FCC Part 95 certified data radio designed for telemetry, SCADA, AVL, wireless data, mobile-data and remote control applications.
The RV-M7-VM data radio transceiver is designed exclusively for use on the license-free MURS radio channels. The FCC has set aside 5 VHF radio channels, limited to 2 watts of transmit RF power, for license free use in the United States. More information about these “MURS” radio channels is available in our application note AN115.

The 5 MURS channels are:

1 151.820 MHz
2 151.880 MHz
3 151.940 MHz
4 154.570 MHz
5 154.600 MHz

It is one of the most versatile and fasted data radio modems. Included in each unit, are advanced networking, error correction, and diagnostics. Featuring an all digital base-band, this one radio modem works on wide and narrow band channels at baud rate from 800 to 19200. It may be ordered with an optional IP65 weatherproof enclosure.

An Optional internal GPS ( -GX option) allows the M7 to send its position and status at pre-set intervals using TDMA channel access, allowing hundreds of vehicles, assets, or personnel to be GPS tracked. A GPS AVL system built with M7 transceivers, can track as fast as 200 vehicles with 10-second updates or 20 vehicles with 1 second updates. The M7 series data radio is the fastest and most efficient VHF AVL radio on the market. See all of Raveon’s AVL technology and software at www.ravtrack.com.

The M7 leads the industry in many areas including technology, features, and price. It has some of the fastest over-the-air data rates, TX-RX switching times, and power-on times. 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. It has programmable over-the-air data rates and IF bandwidths. And its price will pleasantly surprise you.

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General Features

  • Small enclosure contains both a VHF radio transceiver and modem
  • RF power is programmable from 1/2 to 2 watts RF output.
  • Compatible with MODBUS and DNP-3.
  • 5 channel memories pre-programmed to the MURS channels. These may not be reprogrammed.
  • Wide(25kHz) or narrow(12.5kHz) bandwidth may be selected on a channel-by channel basis.
  • Maximum over-the-air data rate of 19200 bps in 25kHz, 9600 bps in a 12.5kHz channel.
  • Small size 4.60” X 2.60” X .956 (11.7cm X 6.6cm X 2.43cm)
  • Very low power consumption (<65mA in RX mode)
  • RS232 serial I/O is standard. RS422/485 optional.
  • Outstanding communication range. 2-30 miles typical.
  • Easy to use and configure.
  • Packetized operation or real-time streaming data.
  • Store-and-forward repeater capable. User-programmable.
  • Internal GPS option available. Programmable update rates and protocol.
  • TDMA (optional) or carrier-sense(standard) channel access.
  • Built-in radio diagnostics AND remote diagnostics. Monitored: DCV, Current, and temperature
  • Powerful 32 bit CPU with base-band Digital Signal Processing for exceptional sensitivity
  • Low-power modes for extended operation off of solar or batteries.
  • Serial port baud rates and flow-control are programmable from 1200 through 115K baud.
  • Automatic ARQ error correction may be enabled
  • FCC ID: SRS-M7-VM

Specifications


General

  • DC Input Voltage …………………………………………..9-16V DC
  • Receive Current Draw…………………………………..<65mA (55typ at 12VDC)
  • Transmit Current Draw (2W)……………………….. < 1.2A
  • Size ……………………………………………………………..4.60” X 2.60” X .956 (11.7cm X 6.6cm X 2.43cm)
  • Channel Spacing ……………………………………….. 12.5kHz, 25kHz, 30kHz
  • Number of channel memories ………………….. 5 (Preset to 5 MURS channels)
  • ID codes ……………………………………………………. 65,536 plus 254 group codes

Transmitter

  • RF Power Output ……………………… 500mW – 2.0 W programmable
  • Maximum Duty Cycle …………… 100% @ 2W to 40C
  • Frequency Deviation ……………………. ± 2.2kHz (narrow) ± 3.5kHz (wide)
  • Occupied bandwidth……………………. 11 kHz (-N) 16kHz(-W)
  • TX Spurious outputs…………………….. < -70dBc
  • TX Harmonic output …………………….. < -80dBc
  • Occupied Bandwidth……………………. Per FCC
  • FCC Emissions Designator …………… 11K0F1D (narrow)
  • Frequency Stability ………………………. Better than ±2.5ppm

Receiver

  • RX sensitivity ( 0.1% BER)
    9600bps………………. < -108dBm
    4800bps………………. < -115dBm
    1200bps………………. < -118dBm
  • Adjacent Channel Selectivity………… -65dB narrow, -70dB wide
  • Alternate Channel Selectivity……….. -70dB
  • Blocking and spurious rejection……. -80dB
  • RX intermodulation rejection ……….. -80dB

User Interface

  • Serial Inter face Port
  • USB Interface Option
  • Standard Connector Type: DB-9
  • IO Voltage Levels RS-232, RS-485, RS-422 (user selectable)
  • RX and TX data Transparent Async
  • Word length 7 or 8 bits
  • Format N, O, or E
  • Modem handshake signals RTS, CTS, CD

Unless noted, all specifications measured at 1200 baud. Specifications subject to change without notice.

Downloads


User Manuals and Documentation:
RV-M7-VM(User Manual) VHF MURS band data radio modem, 1/2-2 watts, RS232 I/O. FCC approved for parts 95.

Programming Software:

Radio Manager 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…

Remote Management (pdf) Built into all FireLine and M7 modems, is a set of unique remote management and diagnostic capabilities. Users are able to remotely read network statistics, configuration, and operating conditions of any FireLine or Raveon modem in the system.

Competitive Features(pdf) Document AN131 describes the unique features of the M7 wireless modem. Some of the M7’s features are available in other company’s products, but no other wireless modem on the market has as rich and complete set of a feature as Raveon’s FireLine.

Firmware Revision Log (pdf) A list of the firmware revisions made to the RV-M7’s processor.

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.

More…

Accessories

Part Number Description
DC Power Cord DC Power Cord. Note: Each RV-7 comes standard with one power cord included with each unit.
RT-CB-H1 Additional DC power Cord
PS-60 AC power supply, 12V DC out, 60W, 100-240 VAC 50-60Hz input