Puget Sound Emergency Radio Network (PSERN)

System Name: Puget Sound Emergency Radio Network (PSERN)
Location: Seattle, WA
County: King
System Type: Project 25 Phase II
System Voice: APCO-25 Common Air Interface Exclusive
System ID: Sysid: 3AB WACN: BEE00
Last Updated: November 24, 2022, 1:57 pm CST   [Added Talkgroup to: Sound Transit (3755 Sound Transit Train Control)]
System Notes

The Pugent Sound Emergency Radio Network (PSERN) has established one radio system that will drastically improve its coverage, capacity, capability, and connectivity to provide King County with reliable emergency radio functionality. The new Motorola P25 Phase II system will provide several new and improved features such as better reliability, improved interoperability, increased capacity to keep up with King County’s growing population, additional radio sites to provide improved coverage to help make sure responders maintain communication during emergencies. In addition, the aging 20-year old analog system will be replaced with state-of-the-art digital technology. The new digital network is in it's intitial testing stage, with the Wave 1 cutover to being in early 2022. The final cutover is expected in the first quarter of 2023, and the old analog legacy system will be deactivated at that time.

Sites and Frequencies

Red (c) are control channel capable frequencies
RFSS Site Name Freqs
1 (1) 025 (19) Seattle/Eastside 851.8875852.8625853.825854.2875c
1 (1) 026 (1A) North King County 851.9875852.4375853.425854.6375c
1 (1) 027 (1B) West King County 851.5375c852.7875c853.675c854.4875c
1 (1) 028 (1C) South King County 851.4625c851.8125852.8125853.175
1 (1) 032 (20) Three Sisters Mountain 855.2125c856.2375c858.2375c859.7125c
1 (1) 033 (21) Kangley 857.4375c858.8875c859.4375c860.7125c
1 (1) 034 (22) Grass Mountain 858.2375c   


DEC HEX Mode Alpha TagDescriptionTag
50001c351TTECH 1Radio Techs (Voice Testing)Public Works
50002c352TTECH 2Radio Techs (Voice Testing)Public Works
50003c353TTECH 3Radio Techs (Voice Testing)Public Works
50004c354TTECH 4Radio Techs (Voice Testing)Public Works
50005c355TTECH 5Radio Techs (Voice Testing)Public Works
50006c356TTECH 6Radio Techs (Voice Testing)Public Works
50007c357DTECH 7Radio Techs (Voice Testing)Public Works
50008c358TTECH 8Radio Techs (Voice Testing)Public Works
50009c359TTECH 9Radio Techs (Voice Testing)Public Works
50010c35aTTECH 10Radio Techs (Voice Testing)Public Works
DEC HEX Mode Alpha TagDescriptionTag
2070cfDSPD Disp SouthDispatch SouthLaw Dispatch
DEC HEX Mode Alpha TagDescriptionTag
3755eabDTrain ControlSound Transit Train ControlTransportation