Transmitting Magnetic Compass

C20-00132

Manufacturer: Autonautic Instrumental SL

This modification converts the Autonautic Instrumental C20 gimballed magnetic compass into a Transmitting Magnetic Compass (TMC).  The TMC pickup coil is attached to the underside of a externally gimballed compass and terminated in a small sealed interface box mounted near the compass.  The coil generates a NMEA0183 sentence and can be directly connected to suitable equipment without the need for additional equipment.  The assembly is factory assembled and aligned to ensure it's accuracy.  The NMEA sentence is mapped to the compass card.

Once the NMEA Pickup is installed the compass readout is mapped to the NMEA $HCHDG sentence.