 This would give the network five owned-and-operated stations (O&Os), the maximum allowed by the FCC at the time.However, DuMont was hampered by Paramount's two stations, KTLA (channel 5) in Los Angeles and WBKB (channel 4, now WBBM-TV on channel 2) in Chicago – the descendants of the two experimental stations that rankled DuMont in 1940.Although these stations did not carry DuMont programming (with the exception of KTLA for one year from 1947 to 1948), and in fact competed against DuMont's affiliates in those cities, the FCC ruled that Paramount essentially controlled DuMont, which effectively placed the network at the five-station cap.