[3] Because AM 1500 is a clear-channel frequency reserved for WFED in Washington, D.C., and KSTP in St. Paul, Minnesota, KJIM is a daytimer and must sign-off at sunset.

On July 31, 1991, the station adopted the call letters KJIM and began airing an oldies format.

He later worked on air at a number of stations in the Midwest including, KIOA and KSO in Des Moines, Iowa; KRMG and KELI in Tulsa, Oklahoma.

Allen later became a well-known Top 40 DJ and talk show host in Fort Worth, Texas, working at KXOL and KFJZ.

He left radio to establish his own advertising agency to service a growing Tandy Corporation (headquartered in Fort Worth).

Featured in the auto dealer's TV commercials, Allen's own Great Dane, Widetrack, became a star of the campaign.

On March 16, 2016, the Federal Communications Commission granted the construction of an FM translator station, K233CV to Bob Mark Allen Productions, Inc. to simulcast the programming of KJIM 1500 as part of the AM Revitalization Act.