I first started listening to KFBK back in 1986. At that time the station was affiliated with both ABC and NBC. They aired ABC News at the top of the hour (although I do recall several times where NBC News came on, apparently by mistake). In 1987 or '88, the station completely dropped ABC and went solely with NBC. After a while KFBK completely dropped NBC, and went solely with ABC. Why was ABC dropped during this period and then why was it brought back?