KAJO

The Grants Pass Broadcasting Corporation, a partnership of James O. "Jim" Wilson Jr. and Jim T. Jackson, applied for a construction permit to build a new 1,000-watt, daytime-only radio station in Grants Pass on October 1, 1956; the Federal Communications Commission (FCC) granted the application on May 1, 1957. Wilson had been encouraged to become a station owner while selling ad time on a station in Klamath Falls; a national appliance salesman told him to move to Grants Pass, which at the time only had one station. A third partner, Phil Jackson, was added to the ownership group in 1958, and the station increased its daytime power to 5,000 watts in 1960. The Jacksons would remain part-owners until 1973, when Wilson bought them out and made Elzie Parker, a longtime friend, the only other partner in the business.

In the 1980s, Jim Wilson's son Carl Wilson and his brother Matt became involved in the management of the station. Grants Pass Broadcasting also expanded in 1993 by starting KLDR (98.3 FM). Carl Wilson became a state legislator from 1999 to 2003; he left the legislature citing its dysfunction, noting that there were five special sessions in 2002, and returned to focus on KAJO, where he hosts a talk show. When Wilson returned to the legislature, he stopped hosting his show during election season to avoid a conflict of interest, though he continued to purchase campaign advertising to air on his own stations.

Grants Pass Broadcasting acquired KRRM (94.7 FM), then off the air, in 2020, giving it a third station in the area.

KAJO also broadcasts on the following FM translator: this improves the coverage and provides high fidelity stereo sound.