Simrad GS25 GPS Antenna

High-frequency GPS and GLONASS antenna for highly accurate onboard positioning.
The GS25 is an external GPS receiver with integrated GLONASS support and NMEA 2000 output. The device operates at a 10 Hz refresh rate, providing smooth and highly current position determination, especially important for fast-moving boats, autopilot tracking, and accurate chart display.

The GS25 connects directly to your NMEA 2000 backbone and provides position, course, speed, and time to all compatible equipment on the network.

Why choose the GS25?

• 10 Hz update frequency: ten position updates per second for smooth course display and fast reaction.
• Dual constellation GPS and GLONASS: more satellites in view, better accuracy in challenging environments.
• NMEA 2000 output: direct connection to your Simrad network and all compatible MFDs.
• External mounting: better signal position than a built-in antenna below deck or in a cabin.
• Plug-and-play: direct recognition by Simrad systems without complicated configuration.

Who is this product for?

The GS25 is suitable for recreational and professional boaters who want a stronger GPS position than the integrated antenna of their MFD provides. Recommended for fast motorboats, sport fishing boats, yachts with cabin mounting, and commercial vessels where autopilot performance and chart tracking require maximum accuracy. Also for refits where existing GPS antennas are being replaced.

What does it offer you?

• More accurate navigation: reliable position determination down to a few meters at any course and speed.
• Better autopilot performance: autopilots use the fast GPS update for tighter course keeping.
• More stable signal: external mounting results in fewer dropouts under bridges or in harbors.
• Wider network availability: one GPS source for your entire Simrad network.
• Low maintenance: robust housing with no moving parts.