About Irmo Police Frequencies
- 1 conventional channel is analog FM, so any scanner can receive it. Enter the frequency and set the tone shown in the table.
- 2 conventional channels use a digital mode (DMR), which needs a scanner that decodes that mode.
- Trunked radio systems that carry law-enforcement traffic here: Palmetto 800: 3 talkgroups; Palmetto 800: 18 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.
- 16 listed entries are marked encrypted. No scanner can decode encrypted audio.
Irmo trunked talkgroups
Palmetto 800
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Irmo Police | Irmo Police | 24912 | 6150 | D |
| Lexington County Sheriff | Channel 14 Municipal Police North (Corner, Animal Services, Chapin, Irmo, Midlands Tech) | 24522 | 5fca | D |
1 encrypted talkgroup (cannot be monitored)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Irmo Police | Irmo Police Roam | 24913 | 6151 | D Encrypted |
Lexington County channels that also cover Irmo
Tactical
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Lexington County Sheriff | Regional Police Channel (Lexington Police Department Channel 4) | 460.0500 | 173.8 PL | FM | KMK750 |
Jails & Corrections
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Lexington County Sheriff | Jail | 453.9625 In 458.9625 | CC 12 · TG 100 · SL 1 | DMR | WNYG270 |
| Lexington County Sheriff | Jail | 453.9625 In 458.9625 | CC 12 · TG 100 · SL 2 | DMR | — |
Palmetto 800
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Lexington County Sheriff | Channel 4 Roam/Mutual Aid | 24510 | 5fbe | D |
| Lexington County Sheriff | Airport Police | 24666 | 605a | D |
| Lexington County Sheriff | Airport Police Roam | 24667 | 605b | D |
15 encrypted talkgroups (cannot be monitored)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Lexington County Sheriff | Lexington County Sheriff – Dispatch | 24501 | 5fb5 | D Encrypted |
| Lexington County Sheriff | Lexington County Sheriff – Dispatch | 24502 | 5fb6 | D Encrypted |
| Lexington County Sheriff | Lexington County Sheriff – Dispatch | 24503 | 5fb7 | D Encrypted |
| Lexington County Sheriff | Lexington Medical Center Police DIspatch | 24671 | 605f | D Encrypted |
| Lexington County Sheriff | Channel 6 North | 24506 | 5fba | D Encrypted |
| Lexington County Sheriff | Channel 7 South | 24507 | 5fbb | D Encrypted |
| Lexington County Sheriff | Channel 8 West | 24509 | 5fbd | D Encrypted |
| Lexington County Sheriff | Channel 5 WRT/CRT | 24511 | 5fbf | D Encrypted |
| Lexington County Sheriff | Channel 9 Detectives | 24512 | 5fc0 | D Encrypted |
| Lexington County Sheriff | Channel 10 Narcotics | 24513 | 5fc1 | D Encrypted |
| Lexington County Sheriff | Sheriff 24514 | 24514 | 5fc2 | D Encrypted |
| Lexington County Sheriff | Channel 13 Special Operations | 24515 | 5fc3 | D Encrypted |
| Lexington County Sheriff | Channel 11 Special Operations | 24518 | 5fc6 | D Encrypted |
| Lexington County Sheriff | Channel 12 Special Operations | 24519 | 5fc7 | D Encrypted |
| Lexington County Sheriff | Lexington Medical Center Police Roam | 24672 | 6060 | 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.
Common questions
Are Irmo police talkgroups encrypted?
1 of the 3 talkgroups listed for Irmo are marked fully or partly encrypted; a scanner cannot decode encrypted audio.