HS70 GPS Compass Non-Magnetic Heading SourceExperience superior navigation from the accurate heading and positioning performance available with the HS70 GPS compass. The HS70 uses SBAS (WAAS, EGNOS, MSAS, etc.) for differential GPS positioning, providing a low cost and highly effective heading and position based smart antenna.The rugged and low profile enclosure provides two multipath-resistant antennas for accuracy, portability and simple installation. The smart antenna – measuring only a revolutionary 40cm/16” - mounts easily to a flat surface or pole. The stability and maintenance-free design of the HS70 provides traditional GPS positioning and heading at a low cost.Main FeaturesProvides heading, positioning, heave, roll and pitchSimNet/NMEA2000 or NMEA0183 communicationAll in one antenna cable – No black box neededExcellent in-band and out-of-band interference rejection0.75° heading accuracy in amazingly small form factorExtremely quick time-to-first-fixDifferential positioning accuracy of 1.0 m, 95% of the timeIntegrated gyro and tilt sensors deliver fast start- up times and provide heading updatesduring temporary loss of GPSSBAS compatible (WAAS, EGNOS, MSAS, etc.) and optional external differential inputCOAST™ technology maintains differentially- corrected positioning for 40 minutes after loss of differential signal