The 25kW xHD3 tier is Garmin's highest-power magnetron open-array radar offering, built for maximum detection range and penetration through rain and sea clutter on larger offshore vessels, reaching roughly 96 nautical miles of detection range in its complete form. Buying the pedestal alone is typical for a warranty/service replacement of a failed drive unit, or for a custom installation where the antenna array is being sourced or reused independently of the pedestal itself. Because a magnetron-based pedestal houses a physically larger, heavier transmitter assembly than a solid-state Fantom pedestal, it's also a meaningfully bigger and more involved service job when it does need replacing - typically handled by a qualified marine electronics installer rather than as a casual DIY swap, and often bundled with the same visit as a broader radar/network inspection given the specialist wiring and mounting involved.