We currently have 1 conventional radio frequency in our database for Portland Police. We do not have any conventional radio frequencies for Middlesex County. We have 1 Middlesex countywide trunking system in our database.
| Agency | Description | Radio Freq | FCC License |
| Portland Police | Portland Police - Dispatch | 155.5350 | N/A |
System name: Cromwell
System type: LTR Standard
| County | Trunking Freq |
| Middlesex | 461.76250 |
| Middlesex | 461.96250 |
| Middlesex | 462.01250 |
| Middlesex | 463.31250 |
| Middlesex | 464.68750 |
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