About Caledonia charter Police Frequencies
- Trunked radio systems that carry law-enforcement traffic here: Michigan's Public Safety Communications System (MPSCS): 12 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 charter, start with the Oak Grove site of Michigan's Public Safety Communications System (MPSCS), about 8 miles away. Its control channels: 853.125, 853.7125 MHz.
- 5 listed entries are marked encrypted. No scanner can decode encrypted audio.
Shiawassee County channels that also cover Caledonia charter
Michigan's Public Safety Communications System (MPSCS)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Shiawassee County Law Enforcement | Shiawassee County Law Enforcement – Dispatch | 1093 | 445 | D |
| Shiawassee County Law Enforcement | Tactical Operations | 1583 | 62f | D |
| Shiawassee County Law Enforcement | Car-to-Car | 1586 | 632 | D |
| Shiawassee County Law Enforcement | Owosso City Police Proprietary | 1614 | 64e | D |
| Shiawassee County Law Enforcement | Baker College Owosso Campus Safety | 1908 | 774 | D |
| Shiawassee County Law Enforcement | County Court Security Services | 1587 | 633 | D |
| Shiawassee County Law Enforcement | Sheriff Jail Security | 1915 | 77b | D |
5 encrypted talkgroups (cannot be monitored)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Shiawassee County Law Enforcement | Tactical Operations | 1581 | 62d | D Encrypted |
| Shiawassee County Law Enforcement | Tactical Operations | 1582 | 62e | D Encrypted |
| Shiawassee County Law Enforcement | Proprietary | 1619 | 653 | D Encrypted |
| Shiawassee County Law Enforcement | Sheriff Detectives | 1620 | 654 | D Encrypted |
| Shiawassee County Law Enforcement | LEIN | 1584 | 630 | D Encrypted |
Nearest trunked radio sites
Distances are measured from the center of Caledonia charter.
Oak Grove · Michigan's Public Safety Communications System (MPSCS)
RFSS 1 · Site 32 (hex 20) · about 8 mi away
Control 853.125, 853.7125
Voice 851.2, 852.075, 855.225
Owosso · Michigan's Public Safety Communications System (MPSCS)
RFSS 1 · Site 4 (hex 4) · NAC 796 · about 8 mi away
Control 853.4375, 853.9375
Voice 851.1, 851.4375, 851.825, 851.9375, 852.325, 852.4375, 852.7, 852.775, 852.9375, 853.6875, 857.4125, 861.1625
Saginaw County Simulcast · Michigan's Public Safety Communications System (MPSCS)
RFSS 1 · Site 21 (hex 15) · NAC 797 · about 20 mi away
Control 853.5, 853.8625, 853.9875
Voice 851.4125, 851.55, 851.625, 851.675, 851.7125, 852.15, 852.25, 852.425, 852.5875, 852.75, 852.9125, 852.9875, 853.1875
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.