Regular television news broadcasts on ABC began soon after the network signed on its initial owned-and-operated television station (WJZ-TV, now WABC-TV) and production center in New York City in August 1948. ABC news broadcasts have continued as the television network expanded nationwide, a process that took many years beginning with its launch in 1948. However, from the 1950s through the early 1970s, ABC News' programs (as was the case with the television network in general during that period) consistently ranked third in viewership behind news programs on CBS and NBC. Until the 1970s, the ABC television network had fewer affiliate stations, as well as a weaker prime-time programming slate to be able to truly support the network's news operations in comparison to the two larger networks, each of which had established their radio news operations during the 1930s.