In 1975, the IBA finally opened the transmission facilities at Saffron Green which allowed both LBC and Capital Radio to move up the dial. Capital moved to 1548 kHz mediumwave (194 m) and LBC to 1152 kHz (261 m). Saffron Green needed to be highly configured as it was sharing the same frequency as other ILR stations and needed to prevent co-channel interference from new ILR stations in Birmingham and Manchester. Previously the Lots Road site gained Capital and LBC the semi-humorous nickname of "Radio Clothesline" however both stations could be heard as far away as the Midlands. FM reception remained unaltered.