On March 17, 1997, the Federal Communications Commission (FCC) announced that eighty-eight stations had been given permission to move to newly available "Expanded Band" transmitting frequencies, ranging from 1610 to 1700 kHz, with KBZS authorized to move from 620 to 1680 kHz."FCC Public Notice: Mass Media Bureau Announces Revised AM Expanded Band Allotment Plan and Filing Window for Eligible Stations" (FCC DA 97-537), March 17, 1997. Notice lists the station under its earlier (and later) call sign of KSTR. However, the station never procured the Construction Permit needed to implement the authorization, so the expanded band station was never built.
