The heading gyro is the heart of the swinging heading display and continuously transmits heading and turn rate without delay. This avoid incorrect rudder move- ments, particularly in rough seas. Contrary to mechanical gyros, the sonic heading gyro will not wear out and operates silently and maintenance free. has a built in automatic compensation function. In addition to compass heading, it measures heel and pitch angles. In the ^^SjH only used to avoid long ^ term drifting of the gyro ■j^^^* gyro drift. The sensor is mounted on a horizontal surface, or with the supplied bracket on a vertical used without the display unit installed. Tecnautic is the first manufacturer of Sonic Gyros and is building them since performance and reliability on all kinds of tion requires only ' display shows heading 'deviation from selected used to set selected heading or display actual gyro heading. Integrated illumination is commonly Instead of the magnetic compass, the gyro can also be slewed by a GPS. In this case it will show Course over Ground. The user may set the priority for slewing by GPS or by magnetic compass. When Ground Speed drops to zero, only the magnetic compass will be used to slew CAN-Bus cable, up to 200 m (700 ft.) length Best Sonic Heading Gyro Simple installation due to mono cable system (CAN-bus) Multiple displays NMEA-connection with GPS creates a West Hills (Los Angeles), CA 91304 e-mail: [email protected]