| Western Connecticut State University | DMR | Motorola Capacity Plus Single Site (TRBO) | Danbury | Fairfield | 2021-02-06 |
| Adusa Corporation | DMR | Motorola Capacity Plus Single Site (TRBO) | Manchester | Hartford | 2022-01-27 |
| Bristol | Project 25 | Phase II | Bristol | Hartford | 2022-08-21 |
| Choate Rosemary Hall Foundation | LTR | Passport | Wallingford | New Haven | 2008-10-04 |
| Connecticut Land Mobile Radio Network (CLMRN) | Project 25 | Phase II | Statewide | Statewide | 2025-04-11 |
| Connecticut Radio SMR | Motorola | Type IIi Hybrid | New Britain | Hartford | 2013-11-03 |
| Cromwell | LTR | Standard | Cromwell | Middlesex | 2014-06-23 |
| CT Amateur Radio Emergency Services (ARES) | DMR | Conventional Networked | Statewide | Statewide | 2025-01-31 |
| Dattco | DMR | Motorola Capacity Plus Single Site (TRBO) | Farmington | Hartford | 2020-09-15 |
| Dominion Nuclear (Millstone) | Motorola | Type II Smartnet | Waterford | New London | 2011-11-01 |
| East Windsor | LTR | Standard | East Windsor | Hartford | 2023-06-10 |
| Eastern Connecticut Health Network | DMR | Conventional Networked | Manchester - Rockville | Multi-County [2] | 2025-03-30 |
| ESPN | NXDN | NEXEDGE 4800 | Bristol | Hartford | 2023-05-15 |
| Eversource | DMR | Tier 3 Standard | Statewide | Statewide | 2022-06-26 |
| Federal Correctional Institution Danbury | Motorola | Type II SmartZone | Danbury | Fairfield | 2013-06-07 |
| Frito Lay | NXDN | NEXEDGE 9600 | Dayville | Windham | 2020-06-26 |
| Greenwich | Project 25 | Phase II | Greenwich | Fairfield | 2025-04-02 |
| Hartford Hospital | DMR | Hytera XPT | Hartford | Hartford | 2024-01-18 |
| HartLink | EDACS | Standard | Hartford | Hartford | 2024-04-22 |
| Homeland Defense Network | DMR | Tier 3 Standard | Various | Multi-County [5] | 2024-08-29 |
| Kimberly Clark | DMR | Motorola Capacity Plus Single Site (TRBO) | New Milford | Litchfield | 2025-01-19 |
| Marcus Communications - Manchester | LTR | Standard | Manchester | Hartford | 2013-12-30 |
| Marcus Communications - Statewide | LTR | Standard and Passport | Various | Multi-County [7] | 2018-07-12 |
| Mashantucket Peqout Tribal Nation | LTR | Standard and Passport | Mashantucket | New London | 2022-06-20 |
| Mashantucket Pequot Tribal Nation (NXDN) | NXDN | NEXEDGE 9600 | North Stonington | New London | 2022-01-02 |
| Metropolitan District | DMR | Motorola Capacity Plus Multi Site (TRBO) | West Hartford | Multi-County [2] | 2024-12-30 |
| Middletown | Project 25 | Phase II | Middletown | Middlesex | 2024-11-01 |
| Mohegan Sun Casino | DMR | Motorola Connect Plus (TRBO) | Uncasville | New London | 2024-03-23 |
| New Haven Municipal | DMR | Motorola Capacity Plus Single Site (TRBO) | New Haven | New Haven | 2021-12-06 |
| New Milford Hospital | DMR | Motorola Capacity Plus Single Site (TRBO) | New Milford | Litchfield | 2025-02-17 |
| Newington | LTR | Standard | Newington | Hartford | 2020-08-05 |
| Northeast Utilities | MPT-1327 | Standard | Various | Multi-County [5] | 2020-08-17 |
| OneVoice MAX | DMR | Tier 3 Non-Standard | Regional | Multi-County [29] | 2025-04-09 |
| OneVoice Network | DMR | Motorola Connect Plus (TRBO) | Various | Multi-County [66] | 2025-03-29 |
| Quinnipiac University | DMR | Motorola Capacity Plus Multi Site (TRBO) | Hamden | New Haven | 2019-12-02 |
| Rentschler Stadium (DMR) | DMR | Hytera XPT | East Hartford | Hartford | 2022-11-13 |
| Somers Board of Health | DMR | Motorola Capacity Plus Single Site (TRBO) | Somers | Tolland | 2019-07-09 |
| Southern Connecticut State University | DMR | Motorola Capacity Plus Single Site (TRBO) | New Haven | New Haven | 2019-10-22 |
| Stamford Town Center | DMR | Motorola Capacity Plus Single Site (TRBO) | Stamford | Fairfield | 2020-08-05 |
| Tower Square | DMR | Motorola Capacity Plus Single Site (TRBO) | Hartford | Hartford | 2024-02-03 |
| United States Department of Defense (14C) | Project 25 | Phase I | Various | Multi-County [62] | 2024-12-28 |
| University Of Hartford | DMR | Motorola Capacity Plus Single Site (TRBO) | West Hartford | Hartford | 2022-10-03 |
| Wallingford | Project 25 | Phase II | Wallingford | New Haven | 2024-05-18 |
| Waterbury | Project 25 | Phase I | Waterbury | New Haven | 2025-02-14 |
| Waterford Regional | Project 25 | Phase I | Waterford | New London | 2024-01-16 |
| West Hartford | Project 25 | Phase I | West Hartford | Hartford | 2022-08-21 |
| Wethersfield | Project 25 | Phase II | Wethersfield | Hartford | 2022-09-07 |
| Windsor | Project 25 | Phase II | Windsor | Hartford | 2023-07-08 |
| Yale University | Motorola | Type II Smartnet | West Haven | New Haven | 2019-10-22 |
| Yale University - New Haven | LTR | Standard | New Haven | New Haven | 2019-10-22 |
