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Comnav G1 GNSS Satellite Compass

Comnav Satellite Compasses

Comnav G1 GNSS Satellite Compass

  • Supports both GPS and GLONASS satellites for complete redundancy

  • Heading accuracy < 0.5 rms

  • Position accuracy < 1.0m 95% confidence (DGPS)

  • An integrated 9 Axis Inertial Measurement Core (IMC technology) provides enhanced roll, tilt and heading stability even during momentary loss of satellite signals

  • G3 color display system (optional)

  • Engineered enhancements to exceed sealed IP67 rating

  • Extended 2 year warranty

  • NMEA 0183 and NMEA 2000 interface

  • 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 and pole mount

  • Pre-programmed default settings for Heading, Rate of Turn, Course over Ground, Lat/Long position, Time & Date

  • 15 meter serial cable standard (30 meter optional)

  • 6 meter NMEA 2000 Cable (Optional)

  • CE certified for EMI and RFI immunity

Part No. Description (Click for more information) Price Buy Now
com11220005 Comnav G1 GNSS Satellite Compass, NMEA0183, w/15mcable $1883.70 Add to cart
com11220009 Comnav G1 GNSS Satellite Compass, NMEA0183, w/30mcable $1968.22 Add to cart
com11220008 Comnav G1 GNSS Satellite Compass, NMEA2000, w/6mcable $1883.70 Add to cart
com10130007 Comnav G3 GNSS Satellite Compass System w/G1 Compass, G3 Display & 6M NMEA2000 Cable $2491.47 Add to cart


Part No. Description (Click for more information) Price Buy Now
com21010004 Comnav Sin/Cosine Interface Box $689.00 Add to cart
com31110023 Comnav 10 Cable for Sin/Cosine Interface $110.00 Add to cart


Receiver Type:

L1, C/A code, with carrier phase smoothing


Two x 32 parallel tracking GPS, GLONASS, SBAS

Update Rate:

Standard 10 Hz, Selectable up to 20 Hz

(position and heading)

Horizontal Accuracy:

< 0.5m 95% confidence (DGPS)*

< 2.5m 95% confidence (autonomous, no SA)**

Heading Accuracy:

< 0.50 rms

Pitch / Roll Accuracy:

< 1 rms

Heave Accuracy:

< 30 cm rms

Rate of Turn:

90 / sec max

Start-up Time:

< 60 sec typical

Heading Fix:

< 10 sec

Satellite Reacquisition:

< 1 sec


Serial Ports:

1 full duplex R2-232 and 1 full duplex RS-422

Baud Rates:

4800 - 115200

Correction I/O Protocol:


Data I/O Protocol:

NMEA 0183, NMEA 2000, CAN

NMEA Heading Messages:





Operating Temperature:

-30C to +70C (-22F to + 158F)

Storage Temperature:

-40C to +85C (-40F to + 185F)


95% non-condensing


FCC Part 1.5, Subpart B, Class B, CISPR22, CE


Input Voltage:

10 to 36 VDC

Power Consumption:

~ 2.8 W nominal

Current Consumption:

~ 240 mA @ 12 VDC

Power Isolation:

Power supply isolated from serial ports

Reverse Polarity Protection: Yes

Power/Data Connection:

18-pin female circular, IP67 sealed 15m cable



Provides reliable < 1 Heading for up to 3

minutes when loss of GPS has occurred

Tilt Sensor:

Assists in fast start-up of heading solution



We accept all major credit cards and Paypal.

Toll Free US: (800) 456-6740
International: (443) 569-8529
Skype: p2marine
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P2 Marine, LLC
306 South Lake Drive
Stevensville, MD 21666