Complex sentence: Channel 5 first went on the air as KSD-TV on February 8,1947, owned by the Pulitzer Publishing Company, along with the "St. Louis Post-Dispatch" and KSD radio (550 AM, now KTRS).
Split into simpler sentences: Channel 5 first went on the air on February 8,1947 as KSD-TV. It was owned by the Pulitzer Publishing Company along with the "St. Louis Post-Dispatch" and KSD radio (550 AM, now KTRS).