The Fantom line's key feature is MotionScope, which uses the Doppler effect to detect and colour-highlight moving targets on screen, making it far easier to spot another vessel on a collision course among stationary land and clutter returns than a conventional radar display allows. High antenna gain helps it pick out weaker, more distant targets, and 8-bit true colour imagery helps distinguish large targets from small ones. This antenna assembly fully integrates with select Garmin chartplotters for overlay on the main navigation display. As a top-assembly replacement part, this is intended for an owner whose existing GMR Fantom 6 antenna needs swapping out due to damage or fault, rather than a full new radar installation. This antenna assembly is compatible with the pedestal/mount base used across Garmin's GMR Fantom 6 installations, simplifying a like-for-like swap without replacing the whole radar system.