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ComNav G2 GNSS Satellite Compass, NMEA 0183, w/15m cable - 11220001

ComNav G2 GNSS Satellite Compass, NMEA 0183, w/15m cable - 11220001

Regular price $2,883.95 USD
Regular price $3,392.48 USD Sale price $2,883.95 USD
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Please Note: This is a Preorder item. It is currently in transit to our warehouse. We expect your order to ship sometime during the 1st week of February. If you order now, you will be in the que to receive one of the incoming units. We have been told by the manufacturer, that we will not be receiving additional units until the end of February. We only have seven days to bill your credit card after placing an order, so your card may be billed prior to your order shipping.

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ComNav G2 GNSS , NMEA 0183, w/15m cable - 11220001

The Vector G2ComNav G2 GNSS GPS Compass is a state-of-the-art electronic navigation data device.  It is capable of providing highly accurate, high-precision position and heading data to a wide variety of marine Navigation equipment, such as autopilots, sonar, radar, chartplotters, AIS receivers & transponders, and many other types of marine devices & systems. The ComNav G2 GNSS features fast start-up and signal re-acquisition times, heading & position updates at up to 20 times per second, and can operate at sustained turn rates up to 90° per second. The ComNav G2 GNSS is a complete GPS Compass in a single rugged, marine-grade enclosure.  It needs only one single power/data cable, which greatly simplifies installation. 

  • New: Supports both GPS and GLONASS satellites for complete redundancy
  • New: Heading accuracy < 0.25° rmsSatellite Compass
  • New: Position accuracy < 0.3m 95% confidence (DGPS)
  • New: An integrated 9 Axis Inertial Measurement Core (IMC technology) provides enhanced roll, tilt and heading stability even during momentary loss of satellite signals
  • New: IMO Compliant G3 color display system (optional)
  • New: Engineered enhancements to exceed sealed IP67 rating
  • New: Extended 2 year warranty • NMEA 0183 and NMEA 2000® interface
  • Type approved as primary heading AND positioning device
  • Heave, Pitch, Roll and Rate of Turn as standard output
  • Heading updates 1 to 20 Hz
  • BAUD Rate selectable: 4800, 9600, 19200, 38400,115200
  • Fully compatible with on board NMEA 0183 and NMEA 2000® RADAR, ECDIS, AIS, Cameras, SONAR, PC and Autopilots
  • Compact integrated surface mounting (Pole mount optional)
  • IMO Compliant, Wheelmark and USCG approved
  • Pre-programmed default settings for Heading, Rate of Turn, Course over Ground, Lat/Long position, Time & Date
  • 1PPS output standard
  • 15 meter serial cable standard (30 meter optional)
  • 6 meter NMEA 2000® Cable (Optional)
  • CE certified for EMI and RFI immunity
  • Worldwide service

 There are two models available – the ComNav G2 GNSS Satellite Compass and the ComNav G2B GNSS Satellite Compass. They are identical, except in their Differential GPS (DGPS) correction features: 

  • The G2 can obtain DGPS information from many Space-Based Augmentation System (SBAS) sources (in areas where compatible ones are available & operational), including WAAS, EGNOS, MSAS, SNAS, GAGAN and others.  The G2 can also accept DGPS information from an external data source. 
  • The G2B has an additional integrated beacon receiver module, which allows it to use conventional terrestrial DGPS Radiobeacon signals to obtain DGPS information, in addition to SBAS sources & external DGPS data sources. 

The G2 GPS Satellite Compass supports multiple RF front ends - enabling tighter coupling of measurements from separate antennas for use in heading-based products. Users will achieve excellent accuracy and stability due to the more accurate code phase measurements, improved multi path mitigation, and fewer components.

The G2/B’s GPS antennas are separated by 50 cm between their phase centers, resulting in 0.5° rms heading performance. The G2/B provides heading and positioning updates of up to 20 Hz and delivers positioning accuracy of 1.0 m 95% of the time when using differential GPS corrections from beacon (G2B only) or from Space Based Augmentation Systems (SBAS).

The G2/B also features technology that enables ComNav GPS Satellite receivers to utilize old differential GPS correction data for 40 minutes or more without significantly affecting the positioning quality. The G2/B is less likely to be affected by differential signal outages due to signal blockages, weak signals, or interference.

GPS Sensor Specifications

  • Receiver Type: L1, C/A code, with carrier phase smoothing
  • Channels: Two x 32 parallel tracking GPS, GLONASS, SBAS
  • Update Rate: Standard 10 Hz, Selectable up to 20 Hz (position and heading)
  • Horizontal Accuracy: < 0.3 m 95% confidence (DGPS)*   < 2.5 m 95% confidence (autonomous, no SA)**
  • Heading Accuracy: < 0.25º rms
  • Pitch / Roll Accuracy: < 1º rms
  • Rate of Turn: 90º / sec max
  • Start-up Time: < 60 sec typical
  • Heading Fix: < 10 sec
  • Satellite Reacquisition: < 1 sec
  • Timing Output: 1PPS, 50 ns accuracy, CMOS

Beacon Receiver Specifications (G2B)

  • Channels: 2-channel, parallel tracking
  • Frequency Range: 283.5 to 325 kHz
  • Operating Modes: Automatic (signal strength or range) and manual
  • Compliance: IEC 61108-4 beacon standard


  • Serial Ports: 1 full-duplex RS-232 and 1 full-duplex RS-422
  • Baud Rates: 4800 - 115200
  • Correction I/O Protocol: RTCM v2.3 (DGPS), RTCM SC-104
  • Data I/O Protocol: NMEA 0183 / Optional NMEA 2000® / Proprietary ASCII
  • Heading Warning I/O: Open relay system indicates invalid heading
  • NMEA Heading Messages: $GPHDT, $GPROT, $PSAT, $GPHDM, $GPHDG
  • Timing Output: 1PPS CMOS, active low, 10KΩ, 10pF load


  • Operating Temperature: -32ºC to +74ºC (-25ºF to + 165ºF)
  • Storage Temperature: -40ºC to +85ºC (-40ºF to + 185ºF)
  • Humidity: 0 - 99% non-condensing


  • Input Voltage: 10 to 36 VDC
  • Power Consumption: ~ 3 W nominal
  • Current Consumption: ~ 250 mA @ 12 VDC
  • Isolation: Power supply isolated from serial ports
  • Reverse Polarity Protection: Yes


  • Dimensions: (see figure)
  • Weight: G2: 2.2 kg (4.8 lb) / G2B: 2.7 kg (5.9 lb)
  • Power/Data Connection: 18-pin, Environmentally sealed  IP67 sealed 
  • 15m or 30m cable (options)

Aiding Devices

Gyro: Provides smooth heading, fast heading reacquision and reliable < 1º heading for periods up to 3 minutes when loss of GPS has occured (static conditions)

Tilt Sensor: Assists in fast start up of heading solutions

* Depends on multipath environment, number of satellites in view, satellite geometry, baseline length (for local services),

and ionospheric activity.

** Depends on multipath environment, number of satellites in view, and satellite geometry

Additional Options:

  • 30m NMEA 0183 Serial Data Cable
  • 6m NMEA 2000® Cable (not IMO compliant)
  • Color LCD Sunlight G3 Instrument Display

This product is the next generation replacement for ComNav Model 11210001, which is no longer available.