In July 1938, a decree of the French PTT agency fixed the French broadcast television standard as transmitting on 455 lines VHF (46 MHz, positive modulation, 25 frames per second), to be adopted throughout France within three years.
1938年7月，法国PTT机构的一项法令将法国广播电视标准定为455线VHF（46 MHz，正调制，每秒25帧），并计划在三年内在法国全国推广。