Simrad GS25 GPS Antenna

The Simrad GS25 GPS Antenna is a professional-grade positioning system built for serious anglers and boaters who demand real-time accuracy on the water. Whether you're navigating shallow flats, running offshore in choppy seas, or conducting precision survey work, this antenna delivers the satellite acquisition speed and positional consistency that separate confident navigation from guesswork. Compact and fully waterproof, the GS25 integrates seamlessly into modern Simrad chartplotters and multifunction displays, making it the trusted choice for recreational and commercial mariners alike.

At its core, the Simrad GS25 combines high-speed position updates with rapid signal acquisition across GPS, WAAS, EGNOS, and additional global correction systems for sub-meter accuracy in virtually any condition. The integrated magnetic heading sensor eliminates the need for a separate compass module, reducing weight and simplifying installation while providing true heading data independent of vessel movement. Its compact, low-profile design minimizes wind resistance and radar interference—critical factors when every pound and every inch of deck real estate matters on a working boat. Full waterproof construction ensures performance in spray, rain, and the corrosive marine environment without degradation.

The GS25 is ideal for owners of Simrad NSS evo, NSS evo2, and GO series displays seeking a reliable antenna upgrade or replacement. Installation requires direct connection to a compatible Simrad chartplotter via the antenna connector; no additional electronics or complicated calibration is needed. Anglers targeting structure in GPS-denied areas, boaters navigating narrow channels, and commercial operators running timed courses will appreciate the consistent positional lock and rapid reacquisition after signal loss. At 1.55 lbs, the GS25 adds minimal topside weight while delivering the positioning performance that keeps your vessel exactly where you need it to be.