| System Name | Type | City |
|---|---|---|
| Alliant Energy | DMR Tier 3 Standard | Various |
| East Central Iowa Rural Electric Cooperative | DMR Conventional Networked | |
| Iowa DMR Users Group | DMR Conventional Networked | Various |
| Iowa Statewide Interoperable Communications System (ISICS) | Project 25 Phase II | Statewide |
| Linn County REC | DMR Conventional Networked | Marion |
| SARA Network | Project 25 Phase II | Various |
| T.I.P. Rural Electric Cooperative | DMR Conventional Networked | Brooklyn |
