later in the 1940s, westinghouse moved on to develop fm and television stations as the fcc began to issue permits for those services. westinghouse built fm sister stations for wbz/wbza, kdka, kyw, kex, and wowo, all of which were on the air by the end of the decade. fm radio was, initially, an unsuccessful venture for westinghouse, and the company would silence most of its fm stations during the 1950s. of the early westinghouse fms, only the original kdka-fm (now wltj) and the second wbz-fm facility (now wmjx) proved to be worth keeping, and westinghouse sold those outlets in the early 1980s.