By September 1967, WYAH-TV was broadcasting in color, and began commercial operation part-time about an hour a day. Initial non-religious fare included low-budget films, travelogues, and local productions. In June 1970, channel 27 activated a new, more powerful transmitter that boosted its effective radiated power to 2.25 million watts. This not only gave it a coverage area comparable to Hampton Roads' Big Three stations, but also provided secondary coverage to the eastern fringe of the Richmond market. Robertson sent a newsletter to donors boasting that channel 27 was now the most powerful station in Virginia.