About Caledonia Police Frequencies
- Trunked radio systems that carry law-enforcement traffic here: Michigan's Public Safety Communications System (MPSCS): 7 talkgroups. A trunking scanner is required, and it must support the system type shown.
- To follow a trunked system, program a control channel first. For Caledonia, start with the Barton City site of Michigan's Public Safety Communications System (MPSCS), about 7 miles away. Its control channels: 852.95, 853.45 MHz.
Alcona County channels that also cover Caledonia
Michigan's Public Safety Communications System (MPSCS)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Alcona County Law Enforcement | Alcona County Law Enforcement – Dispatch | 4107 | 100b | D |
| Alcona County Law Enforcement | Countywide Narcotics Enforcement Common | 4021 | fb5 | D |
| Alcona County Law Enforcement | Region 7 Law Tactical | 4178 | 1052 | D |
| Alcona County Law Enforcement | Alcona County Law Enforcement – Tactical Channel | 4256 | 10a0 | D |
| Alcona County Law Enforcement | Alcona County Law Enforcement – Tactical Channel | 4257 | 10a1 | D |
| Alcona County Law Enforcement | Alcona County Law Enforcement – Tactical Channel | 4258 | 10a2 | D |
| Alcona County Law Enforcement | Alcona County Law Enforcement – Tactical Channel | 4259 | 10a3 | D |
Nearest trunked radio sites
Distances are measured from the center of Caledonia.
Barton City · Michigan's Public Safety Communications System (MPSCS)
RFSS 4 · Site 14 (hex E) · NAC 796 · about 7 mi away
Control 852.95, 853.45
Voice 851.825, 852.1875, 852.45, 861.4375
Curran · Michigan's Public Safety Communications System (MPSCS)
RFSS 4 · Site 12 (hex C) · NAC 792 · about 9 mi away
Control 852.9625, 853.95
Voice 851.9875, 852.475, 855.0375, 855.2375
Glennie · Michigan's Public Safety Communications System (MPSCS)
RFSS 4 · Site 15 (hex F) · NAC 797 · about 13 mi away
Control 853.4625, 853.9625
Voice 851.4625, 852.4625, 854.4625
What do these numbers mean?
- Control channel
- The frequency your scanner listens to first. It tells the scanner where each voice call is happening, so program it before anything else.
- Voice
- The other frequencies the site uses for calls. A trunking scanner follows them automatically once it has the control channel.
- Site
- One tower location of the system. Scanners show the number in decimal or hex, so both are listed.
- RFSS (Radio Frequency Sub-System)
- A group of sites run by the same controller. Large Project 25 systems can have several.
- NAC (Network Access Code)
- A hex code the site transmits. Your scanner can use it to ignore other systems on the same frequency.
- Talkgroup
- A virtual channel on a trunked system, such as one agency’s dispatch. Programming uses the decimal or hex number, depending on your scanner.