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The Garmin GMR 18 xHD is a 4Kw high-definition 18 inch dome radar that pairs ease of use with advanced open-array features. The GMR 18 xHD features 48 or 24 RPM rotation speeds for fast screen refreshes, auto adjusts as needed based on range and a 48 mile max range setting as well as advanced signal processing and dynamic gain/Sea filter for improved performance, dual range, and true color.
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