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 These systems are either no longer in use or have been superceded by another system.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 |
|---|---|---|---|---|---|
| Alliant Energy (iDEN) | iDEN | Standard | Various | Multi-County [106] | 2017-08-11 |
| Alliant Energy Edgewater Generating Plant | LTR | Standard | Sheboygan | Sheboygan | 2019-06-11 |
| ARINC (General Mitchell International Airport) | iDEN | Standard | Milwaukee | Milwaukee | 2020-03-25 |
| Bay Shipbuilding Company | LTR | Standard | Sturgeon Bay | Door | 2018-06-03 |
| Bearcom Crossfit Games Madison 2018 | DMR | Motorola Capacity Plus Single Site (TRBO) | Madison | Dane | 2018-08-24 |
| Childrens Hospital of Wisconsin | LTR | Standard | Wauwatosa | Milwaukee | 2020-11-24 |
| Communications Service (La Crosse) | Motorola | Type I | La Crosse | La Crosse | 2017-07-06 |
| Croell Redi-Mix | NXDN | Conventional Networked | Various | Multi-County [9] | 2023-08-14 |
| CUNA Mutual Insurance | NXDN | NEXEDGE 9600 | Madison | Dane | 2024-04-01 |
| EAA Aviation Foundation | LTR | Standard | Oshkosh | Winnebago | 2008-07-30 |
| Epic Systems | LTR | Standard | Verona | Dane | 2018-04-07 |
| Farmers Telephone Company | Motorola | Type I | Lancaster | Grant | 2020-04-13 |
| Federal Correctional Institution Oxford | Project 25 | Phase I | Oxford | Adams | 2019-09-25 |
| Flipco | LTR | Passport | Various | Multi-County [3] | 2017-07-18 |
| General Communications (Madison Downtown) | LTR | Standard | Madison | Dane | 2020-11-30 |
| General Communications (Madison East) | LTR | Standard | Madison | Dane | 2015-07-17 |
| General Communications (Verona 1) | LTR | Standard | Verona | Dane | 2013-07-10 |
| General Communications (Walworth) | LTR | Standard | Walworth | Walworth | 2020-11-30 |
| General Motors (Janesville) | Motorola | Type II | Janesville | Rock | 2012-05-19 |
| Georgia Pacific | DMR | Motorola Connect Plus (TRBO) | Green Bay | Brown | 2020-11-28 |
| Great River Energy | Motorola | Type II SmartZone Omnilink | Various | Multi-County [44] | 2017-11-05 |
| Great River Energy (WI) | LTR | Standard | Various | Douglas | 2004-07-07 |
| Green Bay - Brown County | Motorola | Type II Smartnet | Green Bay | Brown | 2018-07-20 |
| HarkCom SMR (Berlin) | Motorola | Type I | Berlin | Green Lake | 2020-04-13 |
| Ho-Chunk Casino | NXDN | Icom IDAS Type D | Baraboo | Sauk | 2024-11-07 |
| Illowa Communications | Motorola | Type I | Kieler | Grant | 2020-04-13 |
| La Crosse Municipal Airport | iDEN | Standard | La Crosse | La Crosse | 2022-07-03 |
| La Crosse Public Safety | Motorola | Type II Smartnet | La Crosse | La Crosse | 2017-04-09 |
| Madison Area Public Safety | Motorola | Type II Smartnet | Madison | Dane | 2018-12-06 |
| Madison Chadmoore SMR | Motorola | Type IIi Hybrid | Madison | Dane | 2005-05-14 |
| Marquette University | LTR | Standard | Milwaukee | Milwaukee | 2014-10-23 |
| Milwaukee 440 Airwing | Motorola | Type II SmartZone | Milwaukee | Milwaukee | 2008-09-25 |
| Milwaukee Area Technical College | LTR | Standard | Milwaukee | Milwaukee | 2019-09-06 |
| Milwaukee County Public Safety | Motorola | Type II Smartnet | Milwaukee County | Milwaukee | 2019-09-01 |
| Milwaukee County Public Safety (Project 25) | Project 25 | Phase I | Milwaukee | Milwaukee | 2016-02-05 |
| Milwaukee Repeater Service | LTR | Standard | West Allis | Milwaukee | 2005-02-13 |
| Milwaukee World Festivals (Summerfest) | LTR | Standard | Milwaukee | Milwaukee | 2023-07-01 |
| Nestle Chocolate Manufacturing Plant | LTR | Standard | Burlington | Racine | 2016-10-11 |
| Nextel (Madison) | Motorola | Type I | Madison | Dane | 2007-01-07 |
| Nielson Communications (Appleton 1) | LTR | Standard | Appleton | Outagamie | 2018-07-20 |
| Nielson Communications (Appleton 2) | LTR | Standard | Appleton | Outagamie | 2018-07-20 |
| Nielson Communications (Brillion 1) | LTR | Standard | Brillion | Calumet | 2018-07-20 |
| Nielson Communications (Brillion 2) | LTR | Standard | Brillion | Calumet | 2018-07-20 |
| Nielson Communications (De Pere 2) | LTR | Standard | De Pere | Brown | 2018-07-20 |
| Nielson Communications (Glenmore) | LTR | Standard | Glenmore | Brown | 2008-09-30 |
| Nielson Communications (New London) | LTR | Standard | New London | Waupaca | 2005-05-14 |
| PGA US Open 2017 | DMR | Motorola Capacity Plus Single Site (TRBO) | Hartford | Washington | 2017-06-24 |
| RC Electronics (Brighton) | NXDN | NEXEDGE 9600 | Brighton | Kenosha | 2015-10-03 |
| Satellite Communications (Menomonee Falls) | LTR | Standard | Menomonee Falls | Waukesha | 2009-01-08 |
| SC Johnson Wax | LTR | Standard | Sturtevant | Racine | 2020-09-27 |
| Sheboygan County Public Safety | Motorola | Type II Smartnet | Sheboygan | Sheboygan | 2017-02-10 |
| Sigma-Aldrich Chemical Company 2 | LTR | Standard | Sheboygan Falls | Sheboygan | 2018-07-20 |
| Specialized Care Transport | LTR | Standard | West Milwaukee | Milwaukee | 2019-09-06 |
| Superior Water Light and Power | MPT-1327 | Standard | Superior | Douglas | 2018-07-20 |
| Target Distribution Center (Oconomowoc) | LTR | Standard | Oconomowoc | Waukesha | 2021-04-10 |
| University of Wisconsin - Eau Claire | LTR | Standard | Eau Claire | Eau Claire | 2017-10-16 |
| Watertown Public Services | EDACS | Standard | Watertown | Jefferson | 2015-06-09 |
| Waukesha County Public Safety | Motorola | Type II Smartnet | Countywide | Waukesha | 2019-01-23 |
| WE Energies (UHF) | DMR | Motorola Connect Plus (TRBO) | Various | Multi-County [6] | 2017-08-11 |
| West Bend LTR Partners | LTR | Standard | West Bend | Washington | 2016-12-01 |
| Wisconsin Center District | LTR | Standard | Milwaukee | Milwaukee | 2023-06-11 |
| Wisconsin Dept of Corrections - Chippewa Valley Correctional Treatment Facility | Motorola | Type II Smartnet | Madison | Chippewa | 2023-03-04 |
| Wisconsin Dept of Corrections - Columbia Correctional Institution | Motorola | Type II Smartnet | Portage | Columbia | 2016-07-24 |
| Wisconsin Dept of Corrections - Ethan Allen School | Motorola | Type II Smartnet | Wales | Waukesha | 2011-09-16 |
| Wisconsin Dept of Corrections - Jackson Correctional Institution | Motorola | Type II Smartnet | Black River Falls | Jackson | 2020-08-29 |
| Wisconsin Dept of Corrections - Kettle Moraine Correctional Institution | Motorola | Type II Smartnet | Greenbush | Sheboygan | 2022-04-03 |
| Wisconsin Dept of Corrections - Lincoln Hills School | Motorola | Type II Smartnet | Irma | Lincoln | 2014-10-30 |
| Wisconsin Dept of Corrections - Milwaukee Secure Detention Facility | Motorola | Type II Smartnet | Milwaukee | Milwaukee | 2014-10-24 |
| Wisconsin Dept of Corrections - New Lisbon Correctional Institution | Motorola | Type II Smartnet | New Lisbon | Juneau | 2023-03-04 |
| Wisconsin Dept of Corrections - Oakhill Correctional Institution | Motorola | Type II Smartnet | Fitchburg | Dane | 2021-01-26 |
| Wisconsin Dept of Corrections - Prairie du Chein Correctional Institution | Motorola | Type II Smartnet | Prairie du Chein | Crawford | 2023-03-04 |
| Wisconsin Dept of Corrections - Racine Correctional Institution | Motorola | Type II Smartnet | Sturtevant | Racine | 2020-09-30 |
| Wisconsin Dept of Corrections - Racine Youthful Offenders Center | Motorola | Type II Smartnet | Racine | Racine | 2015-12-14 |
| Wisconsin Dept of Corrections - Redgranite Correctional Institution | Motorola | Type II Smartnet | Redgranite | Waushara | 2015-08-09 |
| Wisconsin Dept of Corrections - Stanley Correctional Institution | Motorola | Type II Smartnet | Stanley | Chippewa | 2015-08-09 |
| Wisconsin Dept of Corrections - Taycheedah Correctional Institution | Motorola | Type II Smartnet | Taycheedah | Fond Du Lac | 2023-03-04 |
| Wisconsin Dept of Corrections - Union Grove area institutions | Motorola | Type II Smartnet | Union Grove | Racine | 2016-03-11 |
| Wisconsin Dept of Corrections - Waupun area institutions | Motorola | Type II Smartnet | Waupun | Dodge | 2014-09-09 |
| Wisconsin Dept of Corrections - Wisconsin Secure Program Facility | Motorola | Type II Smartnet | Boscobel | Grant | 2015-08-09 |
| Wisconsin Dept of Health and Family Services - Mendota Mental Health Institute | Motorola | Type II Smartnet | Madison | Dane | 2018-07-20 |
| Wisconsin Dept of Health and Family Services - Sand Ridge Secure Treatment Facility | Motorola | Type II Smartnet | Mauston | Juneau | 2018-07-20 |
| Wisconsin Dept of Health and Family Services - Winnebago institutions | Motorola | Type II Smartnet | Oshkosh | Winnebago | 2018-07-20 |
| Wisconsin Dept. of Corrections (P25) | Project 25 | Phase I | Winnebago | Multi-County [2] | 2023-03-04 |
| Wisconsin Exposition Center | LTR | Standard | West Allis | Milwaukee | 2011-08-17 |
| Wisconsin Interoperable System for Communications (WISCOM) | Project 25 | Phase I | Statewide | 2009-08-03 | |
| Wisconsin State Fair Park | LTR | Standard | West Allis | Milwaukee | 2023-06-26 |