Garmin GPS 24xd: inexpensive Heading data to stabilize charts, radar, and AIS
The Garmin GPS 24xd combines a high-performance GNSS receiver with a heading sensor though it only costs $50 more than their GPS 19x GNSS receiver. Thus it can inexpensively stabilize chart and radar views on your MFD while also ensuring that your boat’s AIS target is headed in the right direction even when it’s tied up. I’ve been testing one, successfully, and also investigating why the GPS 24xd is not a good replacement for a more accurate, faster-updating, and likely better located Heading sensor that’s appropriate for autopilots and radar ARPA/MARPA calculations.