About Au Sable Police Frequencies
- Trunked radio systems that carry law-enforcement traffic here: Michigan's Public Safety Communications System (MPSCS): 6 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 Au Sable, start with the Oscoda site of Michigan's Public Safety Communications System (MPSCS), about 10 miles away. Its control channels: 853.3625, 853.8625 MHz.
Iosco County channels that also cover Au Sable
Michigan's Public Safety Communications System (MPSCS)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Iosco County Law Enforcement | Iosco County Law Enforcement – Dispatch | 1255 | 4e7 | D |
| Iosco County Law Enforcement | Countywide Narcotics | 1170 | 492 | D |
| Iosco County Law Enforcement | Iosco County Law Enforcement – Alternate | 1493 | 5d5 | D |
| Iosco County Law Enforcement | Countywide Police Tactical | 1495 | 5d7 | D |
| Iosco County Law Enforcement | Countywide Police Tactical | 1496 | 5d8 | D |
| Iosco County Law Enforcement | Sheriff Administration | 1218 | 4c2 | D |
Nearest trunked radio sites
Distances are measured from the center of Au Sable.
Oscoda · Michigan's Public Safety Communications System (MPSCS)
RFSS 1 · Site 12 (hex C) · NAC 794 · about 10 mi away
Control 853.3625, 853.8625
Voice 769.18125, 851.0625, 851.8625, 852.8625, 854.7875, 854.9625, 855.9875, 861.3375, 861.7625
National City · Michigan's Public Safety Communications System (MPSCS)
RFSS 1 · Site 13 (hex D) · NAC 795 · about 24 mi away
Control 853.475, 853.975
Voice 851.125, 851.975, 852.975, 856.2875, 856.3125, 858.3125, 859.3125, 860.3125
Barton City · Michigan's Public Safety Communications System (MPSCS)
RFSS 4 · Site 14 (hex E) · NAC 796 · about 25 mi away
Control 852.95, 853.45
Voice 851.825, 852.1875, 852.45, 861.4375
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.