The Westinghouse Electric Corporation purchased WAAM from the Cohen brothers in May 1957. Westinghouse then took control of the station in August of that year, and changed its callsign to WJZ-TV the following month. The WJZ call letters had previously resided on ABC's flagship radio/television combination in New York City, which changed its calls to WABC-AM-FM-TV in 1953. However, Westinghouse's history with that set of call letters went back even further, as it was the original owner of WJZ radio, the flagship station of NBC's Blue Network, which would eventually become ABC.