This radar of the first generation of mobile radar systems in World War II was in the Allied invasion of Normandy in use. In Switzerland, the system was never used in the tactical way. It was used for determining the locations of the first Swiss airspace control system the SRF Airspace monitoring and management system. The LGR-1 radar was tested at various locations, including at the military airfield Dübendorf, the Bütschelegg above Bern-Belp and in the Weisfluhgipfel the Weissfluhjoch and the Creux du Van. As weatherprotection a wooden hut was built around the LGR-1. The transportable in 10 loads lightweight radar LGR-1 was developed during the Second World War by the Bell Telephone Laboratories and Western Electric and built by Bendix in large numbers.