The RA-4500 Radar Altimeter provides the pilot with highly accurate altitude above-ground-level (AGL) information from 2,000 feet down to zero feet. This real-time system offers an extra measure of operational safety during approaches and night operations. Its patented "anti-rotor-modulation" capability prevents altitude wandering while hovering. The RA-4500 radar altimeter consists of a remote unit and dual antennas for greater accuracy. The ARINC 429 outputs allow seamless integration with other onboard equipment such as flight director systems. The RA-4500 may be purchased with the RAD-40 indicator.