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This is a Garmin accessory kit for the Cortex M1 remote monitoring hub: an external cellular antenna, a 16-foot (5 m) cable and mounting hardware. It lets you place the antenna where it has a clear view of the sky, away from the metal and electronics that block signal inside a hull, vehicle or equipment cabinet. It is a fit-and-forget part rather than an upgrade, and it only makes sense for Cortex M1 owners whose built-in antenna struggles for coverage. Buyers comparing it with generic cellular antennas should note that it is built for the Cortex M1 connector and mounting points.
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Lowest price we've seen: $103.12 on Nov 10 at TWIST. Tracked across 2 stores since Nov 10.
This external cellular antenna is designed for the Garmin Cortex M1. It extends the range of remote monitoring and gives the antenna a clear view of the sky.
It comes with a 5 m (16') cable and mounts for installing the antenna.
