Regional 800MHz trunked radio system

The largest system supported by RCS is the regional 800 MHz trunked radio
system. The regional radio system is comprised of owners from the City of
Seattle, Valley Communications Center, the East Side Public Safety Communications
Agency and King County. RCS services and supports both the King County
and Valley Communications Center subregional systems. Countywide this system
consists of 27 transmitter sites, multiple interconnecting microwave and fiber
systems, and multiple public safety dispatch centers. The system supports
approximately 14,000 radio users in county and suburban agencies, including
police, fire, Emergency Medical Services (EMS), general government functions,
school districts, water and sewer districts, etc.
The King County Regional Communications Board is responsible for the coordination of this system. Read more about the Regional Communications Board, including meeting schedules and minutes.
Other radio services

RCS also provides radio and mobile data radio programming, radio
template development and installation, and user training. We are also
responsible for the installation of mobile radios, mobile data radios
and computer equipment in a variety of King County vehicles, including
the King County Sheriff's Office's fleet.
RCS also provides installation and support services to a wide variety
of other local government agencies. With a well equipped shop and
field service vehicles, RCS provides a full line of radio services to our
customers, from bench level repair of radio equipment, to shop and
field radio installation and maintenance, to mountain-top transmitter
site maintenance.