The Simrad GS25 GPS Antenna delivers fast, accurate positioning and integrated magnetic heading for reliable navigation on the water. Designed for seamless integration with Simrad NSX, NSS, NSO and other NMEA 2000 compatible systems, the GS25 provides high-speed 10Hz position updates for smooth chart plotting and enhanced radar overlay performance.

Unlike standard GPS antennas, the GS25 includes a built-in heading sensor, allowing your compatible Simrad display to accurately determine vessel orientation even at low speeds. This makes it ideal for improving chart orientation and radar overlay functionality.

Its compact, waterproof design can be flush or pole mounted, making installation easy on almost any vessel.

Key Features

• High-speed 10Hz GPS position updates for smooth and responsive navigation
• Integrated magnetic heading sensor for accurate vessel orientation
• Supports GPS, WAAS, EGNOS, GLONASS and MSAS satellite systems
• NMEA 2000® compatible for simple plug-and-play integration
• Ideal for radar overlay and Head Up chart orientation
• Compact, fully waterproof IPX7-rated construction
• Surface or standard pole mounting options
• Compatible with Simrad NS Series multifunction displays and other NMEA 2000 networks

What's Included

• Simrad GS25 GPS Antenna
• NMEA 2000 T-Connector
• Pole Mount
• 4.5m NMEA 2000 Extension Cable

Please Note: This product is not suitable for use with MARPA or autopilot systems which requires a rate compass such as the RC42.

Key Specs

• 32-channel GNSS receiver
• Position accuracy: 3m (9.8 ft)
• Time to first fix: 3 seconds typical (50 seconds cold start)
• Heading sensor accuracy: ±3° heading, ±1° roll/pitch @ 30°
• Sensor type: Solid-state
• Operating voltage: 9–18V DC
• Maximum power consumption: 2W
• NMEA 2000® network load: 2 LEN
• Weight: 0.14kg
• Compass safe distance: 0.5m (20")
• Operating temperature: -25°C to +60°C
• Storage temperature: -40°C to +85°C
• Waterproof rating: IPX7