Transition to PSERN Overview
The transition to PSERN is when agencies will begin using the PSERN System on their new radios. End-user agencies will be assigned to one of four Transition Dates that will occur after they have received their new radios.
Public safety agencies operating throughout King County that are using the local (analog) radio communications system are transitioning to the (P25) digital PSERN radio system. This change began with Seattle area agencies, including Seattle Fire and Police, on March 28, 2023. The next major area to transition is north King County on August 1, 2023.