Garmin GA 25MCX Low Profile Remote GPS Antenna

The Garmin GA 25MCX Low Profile Remote GPS Antenna delivers reliable satellite acquisition for marine navigation systems installed in vehicles, boats, and coastal command centers. Built with a low-profile design optimized for exterior mounting, this remote antenna extends GPS reception capabilities where dash-mounted units struggle—particularly in enclosed cabins, metal-hulled vessels, and vehicles with heavily tinted windows. The integrated magnetic mount provides secure, tool-free installation on any ferrous surface, making it ideal for temporary setup on fishing platforms or permanent mounting on center consoles and hardtops.

The antenna ships with 9.5 feet of cable—sufficient reach from transom-mounted electronics to elevated antenna locations on outriggers, T-tops, or cabin rooflines—and terminates in an MCX connector, the marine industry standard for compact remote antenna installations on Garmin plotters, chartplotters, and integrated GPS/sounder systems. The low-profile construction minimizes wind resistance and radar reflectance compared to bulkier remote antennas, reducing hydrodynamic drag on high-speed offshore vessels. Cable length and connector type are engineered for compatibility with Garmin's GA 25 series receiver systems commonly found on NMEA 2000 networks and standalone marine GPS units.

This antenna suits weekend anglers running center console boats with internal cabins, commercial fishing operations needing backup GPS feeds, and boaters operating in coastal areas with heavy tree canopy or urban canyon reflections that degrade signal quality. The magnetic mount allows rapid repositioning during troubleshooting or seasonal relocations, and the compact footprint fits tight spaces on smaller recreational vessels. Serious offshore anglers and charter captains rely on redundant antenna placement to maintain positional accuracy during critical waypoint approaches and grid fishing patterns where primary navigation system loss could result in lost fishing time or safety risk.