the westinghouse group survived the government-dictated split of nbc's radio division in 1943. wbz/wbza, kdka, and kyw became affiliates of nbc's red network while wowo, which had a secondary affiliation with the blue network, fell back on its primary relationship with cbs. westinghouse expanded to the west coast in 1944 with its purchase of 5,000-watt kex in portland, oregon, a station which also shared a frequency with wowo. westinghouse would increase kex's power to 50,000 watts in 1948.