NBC (owned by RCA) made its first field test of color television on February 20, 1941. However, Baird was not happy with the design, and as early as 1944 had commented to a British government committee that a fully electronic device would be better. This device was very "deep", but was later improved with a mirror folding the light path into an entirely practical device resembling a large conventional console. By December 1940 he had publicly demonstrated a 600-line, hybrid, field-sequential, color television system. His system incorporated synchronized, two color, red and blue-green, rotating filters, placed in front of both the camera, and CRT, to add false colour to the monochromatic television broadcasts. References: payidpokies1