During the following years Heliswiss expanded in Switzerland and formed a network with bases in Belp BE, Samedan GR, Domat Ems GR, Locarno TI, Erstfeld UR, Gampel VS, Gstaad BE and Gruyères FR.
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Heliswiss AG is a Swiss helicopter company with headquarters on the property of Bern Airport in Belp, Switzerland, near Bern.
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From 1955 to 1966, a school complex in Dübendorf (the "Radar Doerfli" (Radar Village) on the training site Dürrbach Rüti bei Riggisberg), one on the top of Bütschelegg (above Bern-Belp) and the plants on height locations (mountain peaks) were formed for the first radar aerial surveillance system of Switzerland.