Irmo also extends into Lexington County.
About Irmo Police Frequencies
- 3 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: Palmetto 800: 27 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 Irmo, start with the Harbison site of Palmetto 800, about 4 miles away. Its control channels: 856.4875, 858.6875, 859.4375 MHz.
- 25 listed entries are marked encrypted. No scanner can decode encrypted audio.
Richland County channels that also cover Irmo
Tactical
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Columbia College | Columbia College Police Back-up channel | 460.5000 In 465.5000 | 565 DPL | FM | WQQF849 |
Jails & Corrections
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Alvin S Glenn Detention Center | Operations | 851.1500 | 131.8 PL | FMN | WQFQ330 |
| Alvin S Glenn Detention Center | Operations | 855.2125 | 131.8 PL | FMN | WQFQ330 |
Palmetto 800
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Richland County Sheriff | Benedict College Police Dispatch | 25761 | 64a1 | D |
| Richland County Sheriff | Benedict College Police Roam | 25762 | 64a2 | D |
25 encrypted talkgroups (cannot be monitored)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Richland County Sheriff | Sheriff Reg 1 Dispatch | 25501 | 639d | D Encrypted |
| Richland County Sheriff | Sheriff Reg 2 Dispatch | 25502 | 639e | D Encrypted |
| Richland County Sheriff | Sheriff Reg 3 Dispatch | 25503 | 639f | D Encrypted |
| Richland County Sheriff | Sheriff Reg 4/5 Dispatch | 25504 | 63a0 | D Encrypted |
| Richland County Sheriff | Sheriff Reg 6/7 Dispatch | 25506 | 63a2 | D Encrypted |
| Richland County Sheriff | Richland County Sheriff – Tactical Channel | 25505 | 63a1 | D Encrypted |
| Richland County Sheriff | Richland County Sheriff – Tactical Channel | 25507 | 63a3 | D Encrypted |
| Richland County Sheriff | Sheriff Investigations | 25508 | 63a4 | D Encrypted |
| Richland County Sheriff | Richland County Sheriff – Tactical Channel | 25509 | 63a5 | D Encrypted |
| Richland County Sheriff | Sheriff Unknown 25510 | 25510 | 63a6 | D Encrypted |
| Richland County Sheriff | Sheriff Unknown 25511 | 25511 | 63a7 | D Encrypted |
| Richland County Sheriff | Sheriff Operations | 25512 | 63a8 | D Encrypted |
| Richland County Sheriff | Sheriff Operations | 25513 | 63a9 | D Encrypted |
| Richland County Sheriff | Sheriff Operations | 25514 | 63aa | D Encrypted |
| Richland County Sheriff | Sheriff SRT | 25516 | 63ac | D Encrypted |
| Richland County Sheriff | Sheriff Unknown 25517 | 25517 | 63ad | D Encrypted |
| Richland County Sheriff | Sheriff Traffic/CAT | 25518 | 63ae | D Encrypted |
| Richland County Sheriff | Sheriff Investigations | 25519 | 63af | D Encrypted |
| Richland County Sheriff | Sheriff Desk Sargeant | 25520 | 63b0 | D Encrypted |
| Richland County Sheriff | Sheriff Statewide | 25521 | 63b1 | D Encrypted |
| Richland County Sheriff | Sheriff Unknown 25523 | 25523 | 63b3 | D Encrypted |
| Richland County Sheriff | Sheriff Unknown 25524 | 25524 | 63b4 | D Encrypted |
| Richland County Sheriff | Sheriff 25530 | 25530 | 63ba | D Encrypted |
| Richland County Sheriff | Sheriff Mutual Aid | 25522 | 63b2 | D Encrypted |
| Richland County Sheriff | Coroner Tactical | 25641 | 6429 | D Encrypted |
Nearest trunked radio sites
Distances are measured from the center of Irmo.
Harbison · Palmetto 800
RFSS 2 · Site 81 (hex 51) · NAC 1D1 · about 4 mi away
Control 856.4875, 858.6875, 859.4375, 859.4875
Voice 854.0875, 854.3375, 856.2125, 856.4375, 857.4375, 857.4875, 857.7625, 858.2125, 858.4375, 858.4875, 859.2125
Little Mountain · Palmetto 800
RFSS 2 · Site 94 (hex 5E) · NAC 1DA · about 14 mi away
Control 851.8125, 852.1125, 853.8
Voice 851.325, 852.2625, 853.225, 853.4875, 855.4875, 856.9875, 858.7625, 858.9875, 859.9875
Lexington County Simulcast · Palmetto 800
RFSS 2 · Site 32 (hex 20) · NAC 1D1 · about 14 mi away
Control 853.5, 855.4625, 859.2625, 860.8875
Voice 852.65, 854.6375, 855.6125, 856.2625, 856.8875, 857.2625, 857.8875, 858.2625, 859.7125, 859.9625, 860.8375
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.