When UHF analogue television was added in 1990, http://www.bbceng.info/Information/eid/press-releases/Transmitter_Press_Releases_07Oct1991_to_18July1990.pdf those services were provided only at very low power and only designed to cover the small villages of Puncheston, Castlebythe, Little Newcastle and Rosebush, which are all located within about 7 kilometers of the mast.