About Penn 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): 8 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 Penn, start with the Cassopolis site of Michigan's Public Safety Communications System (MPSCS), about 5 miles away. Its control channels: 854.6125, 857.0375 MHz.
- 3 listed entries are marked encrypted. No scanner can decode encrypted audio.
Cass County channels that also cover Penn
Dispatch
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Southeast Public Safety Authority | Southeast Public Safety Authority – Dispatch | 155.3100 | FMN | KNBU370 |
Tactical
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Southeast Public Safety Authority | Fire/Police – Tactical | 154.8150 | FMN | KNBU370 |
Michigan's Public Safety Communications System (MPSCS)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Cass County Sheriff | Cass County Sheriff – Dispatch | 3148 | c4c | D |
| Cass County Sheriff | Pokagon Band of Potawatomi Indians – Tribal Police | 3391 | d3f | D |
| Cass County Sheriff | County Police Tactical | 13204 | 3394 | D |
| Cass County Sheriff | Animal Control | 3745 | ea1 | D |
| Cass County Sheriff | LEIN | 13203 | 3393 | D |
3 encrypted talkgroups (cannot be monitored)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Cass County Sheriff | Cass County Sheriff – Tactical Channel | 13965 | 368d | D Encrypted |
| Cass County Sheriff | Cass County Sheriff – Tactical Channel | 13966 | 368e | D Encrypted |
| Cass County Sheriff | Sheriff Department Proprietary | 13972 | 3694 | D Encrypted |
Nearest trunked radio sites
Distances are measured from the center of Penn.
Cassopolis · Michigan's Public Safety Communications System (MPSCS)
RFSS 3 · Site 44 (hex 2C) · NAC 794 · about 5 mi away
Control 854.6125, 857.0375
Voice 769.93125, 770.90625, 852.225, 852.8875, 854.0625, 854.3375
Jones · Michigan's Public Safety Communications System (MPSCS)
RFSS 3 · Site 3 (hex 3) · NAC 792 · about 7 mi away
Control 853.4625, 853.9625
Voice 851.4625, 851.6375, 852.9625, 853.2, 856.3375
Union · Michigan's Public Safety Communications System (MPSCS)
RFSS 3 · Site 53 (hex 35) · NAC 792 · about 11 mi away
Control 853.8
Voice 769.08125, 769.81875, 851.55, 852.3, 852.9375, 853.1375, 853.325
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.