Simrad AT10HD NMEA 2000 TO NMEA 0183 Converter (Fast Heading) SimNet/NMEA0183 The AT10 HD is specifically made for the GB40 Radar Processor to supply NMEA0183 heading data with high update rate (10Hz) for the MARPA function. Hence, it comes with a 12 pin plug matching the connector on the Radar Processor. 10Hz heading is the only information the AT10 HD will transmit via NMEA0183. The AT10 HD also converts data received in NMEA0183 format to SimNet/NMEA2000 format. The AT10 HD is powered from the SimNet bus (or from NMEA2000 bus via an adapter cable). | 
