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Alignment of a Monochrome TV Transmitter for Broadcasting NTSC Color Signals

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1 Author(s)
Joseph F. Fisher ; Philco Research Div., Philadelphia, Pa.

This paper describes the measurements and alignment techniques that were used at Television Station WPTZ (Philadelpha) to successfully broadcast a certified NTSC color signal. Certification data were taken using a standard color-bar chart, the phase and amplitude of the color subcarrier being measured with a vectorimeter having a polar display. Additional equipment employed consisted of a wide-band oscilloscope, ten-step staircase generator, frequency burst generator, transmission-line monitor, and a special stabilizing amplifier modified for color operation.

Published in:

Proceedings of the IRE  (Volume:42 ,  Issue: 1 )