The Garmin GPS 24xd GPS Antenna with Heading Sensor is a robust navigation component designed for marine and mobile applications that require precise positioning and heading data. This unit integrates a high-performance GPS receiver with an electronic heading sensor, delivering reliable position, velocity, heading, and time information through the NMEA network. Its compact, fully sealed housing is built to withstand harsh marine environments, featuring corrosion-resistant materials and a durable UV-stable shell that ensures long-term operational stability. The antenna operates on the L1 frequency band and supports both GPS and GLONASS satellite constellations, which enhances acquisition speed and accuracy even in challenging conditions. The built‑in heading sensor eliminates the need for a separate compass or additional wiring, simplifying installation and reducing system complexity. From a performance standpoint, the GPS 24xd provides update rates of up to 10 Hz, offering smooth, real‑time heading and position output ideal for autopilots, radar overlay, and chartplotter integration. Its NMEA compatibility allows straightforward plug‑and‑play connectivity with compatible displays and networks, streamlining data sharing across onboard electronics. The unit’s low power consumption makes it suitable for both power‑constrained vessels and extended trips. Construction quality is evident in its rigid, weather‑tight enclosure, which meets IPX7 water intrusion standards, ensuring reliable operation in rain, spray, or deck washdowns. The antenna base includes a standard 1″–14 thread mount, accommodating versatile bracket or through‑hole installations. For users seeking accurate heading without the drift or calibration issues common to fluxgate compasses, this sensor provides a stable solid‑state solution. It is especially valuable for sailboats, powerboats, and commercial vessels that depend on consistent heading data for navigation and safety. The unit also features an internal magnetic variation table, allowing it to output true heading directly if needed. While the 24xd is primarily targeted at marine environments, its reliability and ease of integration make it a great choice for vehicle‑mounted GPS systems, agricultural guidance, or any application requiring precise heading and position in a single package.

The Garmin GPS 24xd delivers dependable performance at a very affordable price point, representing a practical investment for upgrading or expanding a vessel’s navigation suite.