Garmin GXM 31 Smart Antenna for GPSMAP 430/430s and 440/440s Chartplotters

(1 customer reviews)

XM data antenna delivers location-specific, animated, high-resolution weather data in chart-overlay form
Compatible with Garmin GPSMAP 430/430s or 440/440s chartplotters; requires subscription
Includes a 30-foot connecting cable with a Positive Lock, waterproof Mini USB connector
Weighs 2 pounds and measures 2 inches in diameter and 2 inches in depth
Covers the continental U.S. and 100 miles into U.S. coastal waters

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Expensive option but safety first.
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D. Galvin

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