Note: This is a listing of deprecated systems. These systems are either no longer in use or have been superceded by another system.
| System Name | Type | Flavor | City | County | Updated |
|---|---|---|---|---|---|
| Amazon Headquarters | DMR | Motorola Capacity Plus Multi Site (TRBO) | Seattle | King | 2023-03-22 |
| Americell Communications (Spokane) | LTR | Standard | Spokane | Spokane | 2014-08-01 |
| B.P. Cherry Point Refinery | Motorola | Type II | Ferndale | Whatcom | 2024-02-03 |
| Boeing Everett Plant | Motorola | Type II SmartZone | Everett | Snohomish | 2009-07-12 |
| Chelan County, Public Utilities | LTR | MultiNet | Wenatchee | Multi-County [2] | 2019-12-04 |
| Clark Communications | LTR | Standard | Lewiston | Multi-County [6] | 2022-09-24 |
| Clark Regional Emergency Services Agency (CRESA) | Motorola | Type II SmartZone | Vancouver | Multi-County [6] | 2017-06-26 |
| Day Wireless 800 MHz | Motorola | Type IIi Hybrid | Spokane | Spokane | 2013-05-22 |
| Everett Naval Station | Motorola | Type II Smartnet | Everett | Snohomish | 2012-02-03 |
| Fairchild Air Force Base | Project 25 | Phase I | Spokane | Spokane | 2019-11-15 |
| Intel Corporation (Dupont) | Motorola | Type II Smartnet | Dupont | Pierce | 2017-12-27 |
| Joint Base Lewis-McChord | Project 25 | Phase I | Tacoma | Pierce | 2016-01-26 |
| Joint Base Lewis-McChord | Motorola | Type II SmartZone | Tacoma | Pierce | 2012-08-05 |
| King County DOT: Metro Transit | Project 25 | Phase I | Seattle | King | 2008-10-21 |
| Kitsap County Local Government | Motorola | Type II | Bremerton | Kitsap | 2018-09-03 |
| Longview Fibre | Motorola | Type II | Longview | Cowlitz | 2018-09-03 |
| Microsoft Global Headquarters | LTR | Passport | Redmond | King | 2019-03-26 |
| Nextel (Tacoma) | Motorola | Type II Smartnet | Tacoma | Pierce | 2014-08-25 |
| Northern Quest Casino | LTR | Standard | Airway Heights | Spokane | 2009-07-21 |
| Portland Public Safety Radio System | Motorola | Type II SmartZone | Portland | Multi-County [4] | 2018-07-22 |
| Puget Sound Energy (MPT-1327) | MPT-1327 | Standard | Bellevue | Multi-County [2] | 2013-02-07 |
| Puget Sound Naval Shipyard | Motorola | Type II SmartZone | Bremerton | Kitsap | 2014-08-19 |
| Seattle-King County Public Safety (KCERS) | Motorola | Type II SmartZone | Seattle | King | 2023-08-03 |
| Snohomish County Public Transit | OpenSky | 9600 baud | Everett | Multi-County [3] | 2023-03-09 |
| Snoqualmie Entertainment | LTR | Standard | Snoqualmie | King | 2020-10-31 |
| Spokane Dispatch | LTR | Standard | Spokane | Spokane | 2009-11-19 |
| Spokane Transit Authority | Motorola | Type II Smartnet | Spokane | Spokane | 2016-06-30 |
| Tacoma/Puyallup Public Safety | Motorola | Type II SmartZone | Tacoma | Pierce | 2020-03-25 |
| Twin Rivers Correctional Facility | Motorola | Type II | Monroe | Snohomish | 2024-02-07 |
| USS Abraham Lincoln | Motorola | Type II Smartnet | Everett | Snohomish | 2012-02-03 |
| Valley Communications Center | Motorola | Type II Smartnet | Kent | Multi-County [2] | 2006-12-31 |
| Washington State Department of Transportation (P25) | Project 25 | Phase II | Varies | Multi-County [2] | 2019-09-01 |
| Washington State University (Spokane) | LTR | Standard | Spokane | Spokane | 2018-11-21 |
| Whatcom County Fire and Rescue Service (FARS) | Project 25 | Phase I | Ferndale | Whatcom | 2008-11-05 |