About Grand Island Police Frequencies
- 2 conventional channels are analog FM, so any scanner can receive them. Enter the frequency and set the tone shown in the table.
- Trunked radio systems that carry law-enforcement traffic here: Michigan's Public Safety Communications System (MPSCS): 2 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 Grand Island, start with the Munising site of Michigan's Public Safety Communications System (MPSCS), about 7 miles away. Its control channels: 852.8875, 853.375 MHz.
- 1 listed entry is marked encrypted. No scanner can decode encrypted audio.
Alger County channels that also cover Grand Island
Jails & Corrections
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Michigan State | Prison | 155.9250 | FMN | WNSQ995 | |
| Michigan State | Prison | 158.7900 In 153.9650 | 107.2 PL | FMN | WPME490 |
Michigan's Public Safety Communications System (MPSCS)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Alger County Sheriff | Alger County Sheriff – Dispatch | 5061 | 13c5 | D |
1 encrypted talkgroup (cannot be monitored)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Alger County Sheriff | County Narcotics Enforcement | 6022 | 1786 | D Encrypted |
Nearest trunked radio sites
Distances are measured from the center of Grand Island.
Munising · Michigan's Public Safety Communications System (MPSCS)
RFSS 5 · Site 24 (hex 18) · NAC 79B · about 7 mi away
Control 852.8875, 853.375
Voice 851.475, 852.3625, 852.7125
Melstrand · Michigan's Public Safety Communications System (MPSCS)
RFSS 5 · Site 25 (hex 19) · NAC 799 · about 14 mi away
Control 852.9625, 853.95
Voice 851.9875, 852.475
Sundel · Michigan's Public Safety Communications System (MPSCS)
RFSS 5 · Site 23 (hex 17) · NAC 79A · about 23 mi away
Control 853.3875, 853.825
Voice 851.2875, 851.4875, 851.9625, 852.4375
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.