Active Interrogation for consistent coverage in radar and non-radar environments. Over 20 Nautical Miles horizontal range for higher performance aircraft. Ryan Patented Directional Top and Bottom antenna system minimizes airframe shadowing and provides 360-degree interrogation and reception coverage. Audible Position Alerting (APA™) announces threat aircraft enhancing your visual traffic warnings. - "Traffic 12 o’clock! High! 1 Mile!" TCAD detects altitude separation, trending, bearing and distance to threat between your aircraft and opposing traffic. Situational awareness is critical for avoiding mid-air collisions. Programmable Air Traffic Shield Area (ATSATM) gives the flexibility to choose airspace coverage from .5 miles to over 20 nautical miles horizontal ±200 to 20,000 feet vertical. Dynamic Shield automatically transitions into shield size modes for "hands-off" convenience. Approach Mode eliminates tones caused by aircraft on the ground to reduce pilot’s distraction on final approach. Altitude Alerter function provides an alert to the pilot prior to the arrival at an assigned altitude or inadvertent changes in cruise altitude. Integral Density Altitude Calculator for quick computing without reference to chart or hand calculators, saving pilot’s time. Modular Lightweight System Components with no additional cooling needed. 4-Port Multi-Function Display interface capability provides an output for up to four displays. Transponder Based ADS-B upgradeable for future technology. Tracks up to 50 aircraft showing the three most imminent threats. N-Number display of mode S equipped aircraft provides pilot’s more information for best situational awareness. The Ryan TCAD (Traffic and Collision Alert Device) offers a safer flight environment by alerting pilots of potential mid-air collisions threats. TCAD is an on-board electronic device providing situational awareness of surrounding aircraft to assist pilots in avoiding other nearby aircraft.