The LORAN-C transmitter Rantum is a transmission facility for LORAN-C on the German island Sylt near the village Rantum at 54°48"30″N, 8°17"37″W(). It was established in the 1960s, initially using a guyed steel framework mast with a triangular cross section, approximately 190 metres tall. In 1996 this mast was replaced...