Simrad's GS25 GPS antenna is the ideal GPS for any navigator that requires extremely accurate and rapid vessel position and speed updates. Unlike other position-only antennas, the GS25 provides magnetic heading for accurate boat direction at any speed and for radar/chart overlay. The GS25 easily connects to any Simrad NS Series multifunction display or any NMEA 2000 network. It is fully waterproof and can be pole or surface mounted on any vessel. Simrad GS25 GPS External Antenna Module Features:High Speed Position UpdateRapid Signal AcquisitionConsistent Position AccuracyIntegrated Magnetic HeadingGPS, WAAS, EGNOS and MoreCompact DesignFully WaterproofNMEA 2000 ConnectivitySimrad Yachting ConstructionWe recommend using this antenna if you have an alloy hardtop boat.Our premier marine workshop offer a complete installation service.For a booking, enquiry or quote to install any accessory please click this linkhttps://finchaser.co.nz/pages/book-a-service