Vigra transmitter site 630 k Hz AM 100 k W

From Wikipedia, the free encyclopedia: Vigra transmitter is a facility for medium wave broadcasting near Vigra in Norway. The Vigra transmitter was inaugurated in 1934. It was used until 1953 for transmission as a Tantenna. This antenna was replaced in 1952, 53 by a guyed, steeltube mast radiator insulated against the earth with a height of 243 metres. In 1999, the height of the mast was reduced for air traffic safety reasons to 232 metres. The Vigra transmitter frequency is 630 kHz with a po