 From 6 a.m. until 6 p.m., the station aired a 1950s oldies format, and simulcasted AM 940 during the remainder of the day.Once again, it was hard to establish a listener base on FM radio in the 1970s, so KIOA-FM also struggled in the ratings.In the early 1970s, KIOA-FM put together a double album of oldies, called "Solid Gold."