$289.00
Achieve precise and rapid vessel positioning with the Simrad GS25 GPS Antenna. Featuring integrated magnetic heading, 10 Hz multi-GNSS updates, and rugged NMEA 2000 connectivity, it enhances navigation, chart overlay, and radar performance.
The GS25 GPS Antenna provides highly accurate and fast position and speed updates by combining multi-GNSS (GPS, GLONASS, WAAS/EGNOS/MSAS, Galileo-ready) with an integrated magnetic heading sensor. Its 32-channel receiver delivers data at up to 10 Hz, ensuring smooth tracking and reliable overlay on charts and radar displays.
Unlike basic GPS units, the GS25 includes a solid-state electronic compass that provides magnetic heading, rate-of-turn, heel, and trim angles via the NMEA 2000 network. This ensures accurate boat orientation, even at low speeds or when stationary, a vital feature for precision navigation.
Built for harsh marine environments, the GS25 is fully waterproof (IPX7), compact, and lightweight (0.14 kg), with both flush and pole-mount options included. It plugs directly into any Simrad NS-series MFD or NMEA‑capable network using the supplied NMEA 2000 cable.
With a fast cold-start time (~50 s) and position accuracy of 3 m, the GS25 ensures reliable and responsive performance. It supports differential correction and network integration, consuming under 2 W, delivering efficiency without draining power.
| Mounting Type | Flush mount / Standard Pole Mount |
| Compass Safe Distance | 0.5 m (20") |
| Weight | 0.14 kg (0.3 lbs) |
| Power Consumption (max) | 2 W |
| Power Consumption (typical) | < 2 W |
| Supply Voltage | 9 V DC - 18 V DC |
| Operating Temperature | -25°C to 60°C (-13°F to 140°F) |
| Storage Temperature | -40°C to +85°C (-40°F to +185°F) |
| Humidity | 40ºC, 93% RH, operating |
| Waterproof Rating | IPX7 |
| NMEA 2000 Connectivity | 1x NMEA 2000 Micro-C port, 2 LEN |
| N2K PGNs | 126992, 129025, 129026, 129029, 129539, 129540, 127258, 127250, 127251, 127257 |
| GPS Correction | DGPS, WAAS, EGNOS, GLONASS, MSAS |
| GPS Receiver Channels | 32 Channels |
| Position Accuracy | 3m (9.8 ft) |
| Time to First Fix | 3s (Cold Start 50s) |
| Update Rate | Up to 10 Hz (1, 5, 10) |
| Approvals | CE under RED 2014/53/EU Directive |
| Sensor Type | Solid state |
| Heading Sensor Accuracy | +/- 3º Heading, +/- 1º Roll/Pitch @ 30º |
| Heading Sensor Data Available | Magnetic, Heading, Rate of Turn, Heel Angle, Trim Angle |
| Heading Sensor Data Protocol | NMEA 2000 |
