CKST switched formats to modern rock and adopted the on-air name "Coast 800" on November 9, 1990. The station underwent major changes during the early part of 1992; on January 30, the CRTC authorized station owner Western World Communications (the former Saskatoon Telecable) to buy Vancouver station CIMA (which had begun operations on September 12, 1986 as CIOF, then CKXY, then CIMA) from Monarch Broadcasting Ltd., also granting permission to CKST to switch frequencies (from 800 to 1040), increase transmission power (from 25,000 watts to 50,000), relocate its transmitter from Aldergrove to Delta and move its operations from Langley to Vancouver. CIMA 1040 signed off for the final time on February 4, and CKST moved into CIMA's facilities and became "Coast 1040" on March 9.