Similarly, the French first program ("première chaine de l'ORTF" before 1975, TF1 after) was transmitted in 625 lines SÉCAM on UHF band and simultaneously on 81

Similarly, the French first program ("première chaine de l'ORTF" before 1975, TF1 after) was transmitted in 625 lines SÉCAM on UHF band and simultaneously on 819 lines black & white on VHF. Old black & white 819 lines was the more highly defined television system before HDTV.