(FCC) proposing new television stations to use Fort Worth's channel 21. One application was headed by Robert S. Block, the other by Sidney Shlenker. The Block and Shlenker groups each proposed subscription television (STV) operation. Shlenker's consortium signed a deal with Oak Industries, owner of the ON TV subscription television service, to outfit its proposed STV system in the Metroplex in 1979; on March 31, 1980, the FCC granted a joint settlement by which Block's group was reimbursed for its expenses and dropped out to allow the Shlenker group to be granted the construction permit. This allowed Shlenker to proceed with building the station for a projected November 1980 launch. Construction proceeded more slowly than that; in October, the newly named KTXA purchased an industrial building on Randol Mill Road in nearby Arlington to be occupied by its own operation as well as that of ON TV itself. KTXA began broadcasting on January 4, 1981, making it the second of three new UHF stations within six months in the Metroplex. In addition to sharing a transmitter tower, KTXA had much in common with Dallas-based KTWS-TV (channel 27, now KDFI) and KNBN-TV (channel 33, now KDAF). All three were part-time STV operations, KTWS-TV carrying Preview from American Television and Communications and KNBN-TV providing VEU, owned by Golden West Broadcasters. ON TV did not start broadcasting until the end of February, and KTXA temporarily broadcast an advertiser-supported prime time schedule until that date, in addition to its permanent daytime lineup with movies, live sports, and a heavy dose of syndicated reruns. When ON TV started, it made Dallas–Fort Worth the only market with three over-the-air STV services. Anthony Cassara, who headed VEU, called the market "total insanity". ON TV ran third in the Metroplex's subscription television wars. By June 1982, the general zenith of STV nationally, VEU had 42,000 subscribers, Preview 30,000, and ON TV 24,800. Of the eight ON TV-branded services nationally, the Dallas–Fort Worth market was the second-smallest behind the newer franchise serving Salem and Portland, Oregon, and of those owned by Oak, it also had the worst relationship between station and STV franchise. Milton Grant, who had joined the Shlenker group and became intimately involved in operations, built up channel 21 as an aggressive independent in program purchasing. When ON TV launched in the Metroplex, as in other cities and with other STV services, it broadcast late-night adult programming