200 Radio 4 on Long Wave?
The BBC Home Service was the predecessor of Radio 4 and broadcast between 1939 and 1967. It had regional variations and was broadcast on medium wave with a network of VHF FM transmitters being added from 1955. Radio 4 replaced it on 30 September 1967, when the BBC renamed many of its domestic radio stations,[1] in response to the challenge of offshore radio. It moved to long wave in November 1978, taking over the 200 kHz frequency previously held by Radio 2, and later moved to 198 kHz as a result of international agreements aimed at avoiding interference.