http://www.americanradiohistory.com/Archive-BC-IDX/57-OCR/1957-05-27-BC-0010.pdf] Around 1958, WTVD built a 1549 feet tower at its present transmitter site in Auburn to increase its signal coverage for the entire Raleigh-Durham-Fayetteville market; at the time this was the tallest man-made structure in the U.S. That same year, the station first began broadcasting network programs in color, although it would not be until 1966 before the same was true for local programming.