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 These systems are either no longer in use or have been superceded by another system.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 |
|---|---|---|---|---|---|
| Advanced Radio Technology | LTR | Standard | Various | Hamilton | 2022-10-17 |
| Airborne Express (Wilmington) | LTR | Standard | Wilmington | Clinton | 2011-05-02 |
| Akron Public Service | Motorola | Type II Smartnet | Akron | Summit | 2005-07-11 |
| Alan Vasu (420 LTR) 1 | LTR | Standard | Various | Lorain | 2018-07-23 |
| Alan Vasu (420 LTR) 3 | LTR | Standard | Brunswick | Medina | 2018-07-23 |
| Alan Vasu (420) | LTR | Standard | Various | Multi-County [2] | 2017-05-28 |
| Alan Vasu (UHF) | LTR | Standard | Various | Multi-County [2] | 2017-05-28 |
| America West Airlines | Motorola | Type II Smartnet | Columbus | Franklin | 2005-11-09 |
| American Electric Power (Eastern US) | EDACS | Networked Standard | Multiple | Multi-County [32] | 2024-10-29 |
| Anderson Concrete | Motorola | Type I | Westerville | Franklin | 2018-01-12 |
| Anheuser-Busch Columbus | Motorola | Type II Smartnet | Columbus | Franklin | 2024-11-20 |
| Austintown Township Public Safety | Motorola | Type IIi Hybrid | Austintown | Mahoning | 2013-05-03 |
| B and C Communications 2 | LTR | Standard | Newark | Licking | 2018-07-23 |
| B and C Communications LTR | LTR | Standard | Various | Multi-County [3] | 2022-08-28 |
| Barberton | Project 25 | Phase I | Barberton | Summit | 2015-10-02 |
| Bath | Motorola | Type II Smartnet | Bath | Summit | 2012-03-02 |
| Bath (Project 25) | Project 25 | Motorola X2-TDMA | Akron | Summit | 2015-10-08 |
| Belmont County | Motorola | Type II SmartZone | St. Clairsville | Multi-County [2] | 2015-01-16 |
| BP America (Oregon) | Motorola | Type II Smartnet | Oregon | Lucas | 2021-04-16 |
| Bureau of Prisons - Elkton FCI | Motorola | Type II Smartnet | Elkton | Columbiana | 2009-11-25 |
| Butler Regional Interoperable Communications System (BRICS) | Project 25 | Phase I | Hamilton | Butler | 2014-09-18 |
| Canton/Stark County | Motorola | Type II SmartZone | Canton | Stark | 2019-04-09 |
| Cincinnati Public Safety | Motorola | Type II SmartZone | Cincinnati | Hamilton | 2005-03-16 |
| City of Dayton | Motorola | Type II Smartnet | Dayton | Montgomery | 2016-12-05 |
| City of Springfield | EDACS | Standard | Springfield | Clark | 2019-03-01 |
| City of Toledo | Motorola | Type II Smartnet | Toledo | Lucas | 2008-02-09 |
| City of Westerville School District | LTR | Standard | Westerville | Franklin | 2016-10-27 |
| Clermont County | Motorola | Type II SmartZone | Batavia | Clermont | 2015-05-19 |
| Cleveland | Motorola | Type II | Cleveland | Cuyahoga | 2014-05-19 |
| Cleveland Browns Stadium | Motorola | Type II Smartnet | Cleveland | Cuyahoga | 2018-09-04 |
| Cleveland Browns Stadium (UHF) | LTR | Passport | Cleveland | Cuyahoga | 2018-09-04 |
| Cleveland Cavaliers | LTR | Standard | Cleveland | Cuyahoga | 2016-07-21 |
| Clinton County OH | EDACS | Standard | Wilmington | Clinton | 2016-10-04 |
| Communications Service (Painesville) | LTR | Standard | Painesville | Lake | 2018-03-26 |
| Communications Service OH | LTR | Standard | Thompson | Multi-County [3] | 2018-03-26 |
| DaimlerChrysler Corp. (Toledo) | Motorola | Type II Smartnet | Toledo | Lucas | 2012-06-14 |
| DaimlerChrysler Corp. (Twinsburg) | LTR | Standard | Twinsburg | Summit | 2012-12-07 |
| Dayton Power and Light | EDACS | Networked Standard | Various | Multi-County [13] | 2018-07-22 |
| Defense Supply Center Columbus (DSCC) | Project 25 | Phase I | Whitehall | Franklin | 2016-12-25 |
| Delphi Automotive Systems (Moraine) | Motorola | Type II Smartnet | Moraine | Montgomery | 2017-09-09 |
| Domer Communications (Wooster) | LTR | Standard | Wooster | Wayne | 2024-03-29 |
| Dublin | Motorola | Type II Smartnet | Dublin | Franklin | 2009-12-17 |
| Duke Energy | Motorola | Type II Smartnet | Cincinnati | Hamilton | 2008-12-20 |
| East Ohio Gas | EDACS | Narrowband | New Philadelphia | Tuscarawas | 2016-08-28 |
| EC Repeaters | LTR | Standard | Dayton | Montgomery | 2022-01-16 |
| Electrocomm (Akron) | LTR | Standard | Akron | Summit | 2018-11-22 |
| Electrocomm (Maple Heights) | LTR | Standard | Maple Heights | Cuyahoga | 2024-03-29 |
| Englewood Communications | LTR | Standard | Trotwood | Montgomery | 2022-01-16 |
| Fayette County OH | EDACS | Standard | Washington Court House | Fayette | 2022-01-21 |
| Findlay City Services | Motorola | Type II Smartnet | Findlay | Hancock | 2010-05-05 |
| First Energy - Sammis Plant | DMR | Motorola Capacity Plus Multi Site (TRBO) | Stratton | Jefferson | 2023-08-05 |
| Ford Plant (Lima) | EDACS | Narrowband | Lima | Allen | 2018-09-17 |
| Ford Plant (Lorain) | Motorola | Type II Smartnet | Lorain | Lorain | 2006-01-25 |
| Ford Plant (Maumee) | EDACS | Narrowband | Maumee | Lucas | 2009-01-14 |
| Ford Plant (Sharonville) | EDACS | Narrowband | Sharonville | Hamilton | 2011-10-15 |
| Ford Plant (Walton Hills) | Motorola | Type II Smartnet | Walton Hills | Cuyahoga | 2023-11-26 |
| Franklin County Public Safety | Motorola | Type II Smartnet | Columbus | Franklin | 2016-09-02 |
| Franklin County Public Service | Motorola | Type II Smartnet | Columbus | Franklin | 2020-02-03 |
| Futronics (MOTOTRBO) | DMR | Motorola Connect Plus (TRBO) | Varies | Multi-County [9] | 2016-10-03 |
| Futronics (UHF) | DMR | Motorola Capacity Plus Single Site (TRBO) | Various | Multi-County [21] | 2016-09-09 |
| Geauga County | Motorola | Type II Smartnet | Geauga County | Geauga | 2013-04-22 |
| General Motors Research (Moraine) | Motorola | Type II Smartnet | Moraine | Montgomery | 2010-02-15 |
| Goodyear Tire and Rubber | Motorola | Type II Smartnet | Akron | Summit | 2018-08-26 |
| Great Wolf Lodge | LTR | Standard | Mason | Warren | 2018-08-12 |
| Grove City | Motorola | Type II Smartnet | Grove City | Franklin | 2015-09-10 |
| Hamilton County-Cincinnati Public Safety | Project 25 | Phase I | Cincinnati | Multi-County [2] | 2016-10-07 |
| Heath | Motorola | Type II Smartnet | Heath | Licking | 2008-06-29 |
| Hi-Tech Wireless | LTR | Standard | Girard | Trumbull | 2017-08-26 |
| Hi-Tech Wireless (Lisbon) | LTR | Standard | Lisbon | Multi-County [3] | 2018-09-01 |
| Hi-Tech Wireless (Minerva) | LTR | Standard | Minerva | Multi-County [3] | 2016-06-17 |
| Hi-Tech Wireless (New Springfield) | LTR | Standard | New Springfield | Multi-County [2] | 2017-06-26 |
| Huber Heights | Motorola | Type I | Huber Heights | Montgomery | 2010-02-16 |
| Independence Communications (Cleveland 2) | LTR | MultiNet | Cleveland | Cuyahoga | 2018-06-28 |
| Indiana Project Hoosier SAFE-T (P25) | Project 25 | Phase I | Statewide | Multi-County [3] | 2014-04-15 |
| Jefferson County OH | Motorola | Type II Smartnet | Jefferson County | Jefferson | 2015-06-18 |
| Lake County | Motorola | Type II SmartZone | Lake County | Lake | 2012-11-08 |
| Lauttamus Communications - Weirton | LTR | Standard | Weirton | Multi-County [2] | 2013-06-20 |
| Limited Logisitcs Services | LTR | Standard | Columbus | Franklin | 2016-10-25 |
| Lubrizol | DMR | Motorola Connect Plus (TRBO) | Wickliffe and Painesville | Lake | 2022-02-18 |
| Lubrizol, Inc (1) | Motorola | Type II Smartnet | Wickliffe | Lake | 2019-11-03 |
| Lubrizol, Inc (2) | Motorola | Type II | Painesville | Lake | 2019-11-03 |
| Marathon Petroleum | DMR | Motorola Connect Plus (TRBO) | Canton | Stark | 2024-08-20 |
| MedCorp EMS (Columbus Division) | LTR | Standard | Various | Multi-County [7] | 2008-05-11 |
| Miami County (EDACS) | EDACS | Standard | Miami County | Miami | 2018-12-02 |
| Miami County (P25) | Project 25 | Phase I | Troy | Miami | 2018-10-20 |
| Middletown Coke Company | LTR | Standard | Middletown | Butler | 2018-07-21 |
| Midport Electronics (420) 2 | LTR | Standard | Toledo | Lucas | 2018-07-23 |
| Montgomery County OH | Motorola | Type II Smartnet | Dayton | Multi-County [3] | 2016-12-05 |
| NASA John Glenn Research Center | EDACS | Standard | Brookpark | Cuyahoga | 2010-06-04 |
| Nextel (Chillicothe) | Motorola | Type I | Chillicothe | Ross | 2004-07-24 |
| Ohio Health - Central Ohio | DMR | Motorola Capacity Plus Multi Site (TRBO) | Columbus | Franklin | 2020-10-07 |
| Ohio MARCS - Multi-Agency Radio Communications | Motorola | Type II SmartZone Omnilink | Statewide | Statewide | 2016-08-10 |
| Ottawa County Public Safety Radio System | EDACS | Standard | Port Clinton | Ottawa | 2014-05-19 |
| Oxford Area Radio System (OARS) | Project 25 | Phase I | Oxford | Butler | 2010-07-25 |
| P and R Communication Service (Bellbrook) | LTR | Standard | Bellbrook | Greene | 2018-07-23 |
| P and R Spectrum Communications (Springfield) | LTR | Standard | Springfield | Clark | 2024-10-08 |
| P and R Spectrum Communications (Xenia) | LTR | Standard | Xenia | Greene | 2018-07-23 |
| P and R Spectrum Resources, Inc. | LTR | Standard | Dayton | Montgomery | 2018-07-23 |
| P and R Spectrum Resources, Inc. Dayton | LTR | Standard | Dayton | Multi-County [2] | 2022-10-17 |
| P and R Spectrum Resources, Trotwood | LTR | Standard | Trotwood | Montgomery | 2018-07-23 |
| Pickaway County Backup | EDACS | Standard | Circleville | Pickaway | 2020-11-23 |
| Proctor and Gamble (Cincinnati) | Motorola | Type II Smartnet | Cincinnati | Hamilton | 2018-07-23 |
| Proctor and Gamble (Ivorydale) | Motorola | Type II Smartnet | Mason | Warren | 2018-07-23 |
| Quicken Loans Arena (The 'Q') | Motorola | Type II Smartnet | Cleveland | Cuyahoga | 2006-09-10 |
| Radio Link Communications 2 | LTR | Standard | Elyria Twp | Lorain | 2018-08-14 |
| Republican National Convention (2016) | DMR | Motorola Capacity Plus Multi Site (TRBO) | Cleveland | Cuyahoga | 2017-03-10 |
| Richfield | Motorola | Type II Smartnet | Richfield | Summit | 2018-10-21 |
| Sandusky Asphalt and Concrete | Motorola | Type I | Sandusky | Erie | 2024-06-20 |
| Shelby County | Motorola | Type II Smartnet | Sidney | Shelby | 2009-05-04 |
| Southwest Regional Communications Network (SWRCN) | Motorola | Type II Smartnet | Brookpark | Cuyahoga | 2014-02-08 |
| Staley Communications (Bridgeport-Wheeling) | Motorola | Type II | Bridgeport/Wheeling | Multi-County [2] | 2018-01-27 |
| Staley Communications (Masury) | LTR | Standard | Masury | Trumbull | 2016-07-27 |
| Staley Technologies (New Philly) | Motorola | Type II | New Philadelphia | Tuscarawas | 2016-08-28 |
| Strongsville Service Department | EDACS | Standard | Strongsville | Cuyahoga | 2014-01-20 |
| Summit County (P25) | Project 25 | Phase I | Various | Summit | 2019-01-18 |
| Summit County Regional 800 Radio | Motorola | Type II SmartZone | Various | Summit | 2018-10-12 |
| SWRCN East Side? | Motorola | Type II | Cleveland | Cuyahoga | 2008-05-17 |
| Target Stores Regional Distribution Center | LTR | Standard | West Jefferson | Madison | 2024-10-08 |
| The Ohio State University | Motorola | Type II Smartnet | Columbus | Franklin | 2015-09-11 |
| Thomas E. Schleppi | LTR | Standard | Columbus | Franklin | 2016-07-09 |
| Toledo Area SMR | Motorola | Type I | Sylvania | Lucas | 2004-12-06 |
| Toledo Museum of Art | LTR | Standard | Toledo | Lucas | 2016-12-13 |
| Tuscarawas County | Motorola | Type II Smartnet | New Philadelphia | Tuscarawas | 2020-06-04 |
| United Airlines | Motorola | Type II Smartnet | Cleveland | Cuyahoga | 2024-09-23 |
| United Airlines (Dayton) | LTR | Standard | Vandalia | Montgomery | 2023-03-19 |
| United Parcel Service (Dayton) | LTR | Standard | Dayton | Montgomery | 2023-03-19 |
| United Telephone of Ohio | Motorola | Type II Smartnet | Various | Multi-County [12] | 2022-02-20 |
| University of Akron | LTR | Passport | Akron | Summit | 2018-01-10 |
| University of Akron (900) | LTR | Standard | Akron | Summit | 2004-11-13 |
| University of Toledo Medical Center | LTR | Standard | Toledo | Lucas | 2017-07-16 |
| Warren County | Motorola | Type II Smartnet | Lebanon | Warren | 2014-05-16 |
| West Chester Township | Motorola | Type II Smartnet | West Chester/Monroe | Butler | 2010-05-27 |
| Winton Transportation (UTS) | LTR | Standard | West Chester | Butler | 2022-01-16 |
| Wright State University | Motorola | Type II Smartnet | Dayton | Greene | 2014-06-20 |
| Wright-Patterson Air Force Base | Motorola | Type II Smartnet | Riverside | Multi-County [2] | 2017-10-15 |
| Youngstown Radio service Inc | LTR | Standard | Youngstown | Mahoning | 2017-05-05 |