Sign on (date Unknown) as KEOK   (250 watts)

(Date Inknown)    Call letters changed to KYET 

October 1, 1984  call letters changed to KACY

January 30, 1990  call letters changed to KIOV

2007  City of license and transmitter moved from Payette to Notus 

March 25, 2011 call sign changed to KWEI

March 25, 2014 call sign changed to KTRP