The Crosley broadcast division took the name of its parent company in 1968, becoming Avco Broadcasting Corporation. In 1969, the FCC enacted its "one-to-a-market" rule, which enforced a ban on common ownership of AM radio stations and television stations with overlapping coverage areas under certain conditions while grandfathering some already existing instances. Avco's ownership of WLW radio (a 50,000-watt, clear-channel station) and WLWT, and the Columbus, Dayton and Indianapolis television stations was initially protected under the new rule. While WLWT's channel 5 potential coverage area covered a large amount of the Dayton and Columbus markets, the station was forced by the FCC to transmit with a shorter broadcast tower, thus reducing the signal overlap between WLWT, WLWC, and WLWD.