An early rhombic antenna in 1937 in Dixon, California, USA. It was built by the American Telephone and Telegraph Co. for long distance telephone service to the Far East via shortwave radio. It communicates with a station in Shanghai, China, 6100 miles away. The antenna consists of two parallel wires strung in the shape of a rhombus from telephone poles. It is fed from the near end and terminated by a transmission line at the far end.