The station's transmitter is located on Krell Hill southeast of the city.
Two months after the original construction permit was granted, the station changed its call letters June 12, 1998, to KGPX to reflect the new Pax network (the predecessor to Ion), of which the station was to be a part.
The station's signal is multiplexed: KGPX-TV shut down its analog signal, over UHF channel 34, on June 12, 2009, and "flash-cut" its digital signal into operation UHF channel 34,[3] because it was granted an original construction permit after the FCC finalized the DTV allotment plan on April 21, 1997.
KGPX twice attempted to secure a companion digital allocation on channel 43 through a complex Negotiated Channel Election Arrangement with 19 other stations in Washington, Idaho and Oregon, but was denied by the FCC due to interference issues.
[4] KGPX was the fourth television station to be granted an original construction permit on channel 34 in Spokane, Washington.