We heard this local radio station on 99.1 MHz at a campground in Balzers, Liechtenstein. According to the verification letter, the studio is in Buchs, Switzerland and the transmitter is located at Buchserberg. They were broadcasting a locally produced program with folk music when we heard then.
At the time there were no local stations in Lichtenstein and this was the closest one to it. The station first signed on the air on 2 June 1986. Radio Gonzen became Radio Ri for a while, and is now the station is called Radio FM1 Buchs.