The main DEURAS system
detects any unlicensed radio station
The DEURAS-D system features numerous sensor stations installed atop steel towers and buildings in Japan's major city areas, and connected to center stations at regional telecommunications bureaus via high-speed digital lines. The lines are capable of measuring a broad frequency range, from 25MHz to 3GHz, which covers recent technological advances such as digital cell phones, digital MCAs, and PHS. DEURAS-D can also auto-monitor and detect unlicensed radio stations that interfere with mobile communications and other radio communications that are becoming increasingly popular.