The TK prefix has been used for stations in Corsica since March 1984..
TK was used for special event stations in France and French Overseas Territories from 1975-1984.
Known operations:
May 1975 - 50th anniversary of REF - 'Reseau des Emeteurs Français'.
F: TK, FG: TK7G , FM: TG7M, FR: TG7R, FY: TG7Y.
November 1977: TK7GAS op FG7AS - XXth anniversary and IXth conference of UTO (United Towns Organisation).
January 1979: TK7G - unknown event, information required,.
May 1979: TK#ITU - International Telecimmunications Day - all stations QRV from France.
June 1983, June 1984 - TK6JUN - Commemoration of D-D landings on 1944-06-06.