Starting before CBS color even got on the air, the U.S. television industry, represented by the National Television System Committee, worked in 1950–1953 to develop a color system that was compatible with existing black-and-white sets and would pass FCC quality standards, with RCA developing the hardware elements. RCA first made publicly announced field tests of the dot sequential color system over its New York station WNBT in July 1951. When CBS testified before Congress in March 1953 that it had no further plans for its own color system, the National Production Authority dropped its ban on the manufacture of color television receivers, and the path was open for the NTSC to submit its petition for FCC approval in July 1953, which was granted on December 17. The first publicly announced network demonstration of a program using the NTSC "compatible color" system was an episode of NBC's "Kukla, Fran and Ollie" on August 30, 1953, although it was viewable in color only at the network's headquarters. The first network broadcast to go out over the air in NTSC color was a performance of the opera "Carmen" on October 31, 1953.