This radar site is located atop the Steinmandl (490 m) north of Ernstbrunn in the Leiser Berge region 40 km north of Vienna. The site is active since 1985; to the immediate west a secondary radar operated by AustroControl is located atop the Buschberg. The ORS uses a Selenia (now Alenia) RAT-31S 3-D radar, but is scheduled to receive the RAT-31DL upgrade. The site was a replacement for the unbuilt one atop the Schneeberg south of Vienna.