About Red Rock 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: South Dakota State Radio System: 12 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 Red Rock, start with the Sioux Falls Simulcast site of South Dakota State Radio System, about 12 miles away. Its control channels: 157.86, 157.98, 158.055 MHz.
- 2 listed entries are marked encrypted. No scanner can decode encrypted audio.
Minnehaha County channels that also cover Red Rock
Jails & Corrections
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Minnehaha County Sheriff | State Penitentiary | 453.4500 | 100.0 PL | FMN | — |
| Minnehaha County Sheriff | State Penitentiary | 460.4750 In 465.4750 | 136.5 PL | FMN | KVJ774 |
South Dakota State Radio System
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Minnehaha County Sheriff | Law 1 | 1485 | 5cd | D |
| Minnehaha County Sheriff | Special Operations | 1478 | 5c6 | D |
| Minnehaha County Sheriff | Special Operations | 1479 | 5c7 | D |
| Minnehaha County Sheriff | Special Operations | 1480 | 5c8 | D |
| Minnehaha County Sheriff | SWAT | 1492 | 5d4 | D |
| Minnehaha County Sheriff | SWAT Interagency | 1493 | 5d5 | D |
| Minnehaha County Sheriff | Jail | 1495 | 5d7 | D |
| Minnehaha County Sheriff | Law 3 | 1497 | 5d9 | D |
| Minnehaha County Sheriff | Jail | 1498 | 5da | D |
| Minnehaha County Sheriff | Animal Control | 1685 | 695 | D |
2 encrypted talkgroups (cannot be monitored)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Minnehaha County Sheriff | Minnehaha County Sheriff – Dispatch | 1494 | 5d6 | D Encrypted |
| Minnehaha County Sheriff | Law Data | 1488 | 5d0 | D Encrypted |
Nearest trunked radio sites
Distances are measured from the center of Red Rock.
Sioux Falls Simulcast · South Dakota State Radio System
RFSS 1 · Site 44 (hex 2C) · NAC 47A · about 12 mi away
Control 157.86, 157.98, 158.055, 158.55
Voice 157.275, 157.485, 158.115, 158.28, 158.595
Baltic · South Dakota State Radio System
RFSS 1 · Site 43 (hex 2B) · NAC 479 · about 15 mi away
Control 157.2625, 157.755
Voice 158.49, 158.64
Minnehaha Simulcast · South Dakota State Radio System
RFSS 1 · Site 61 (hex 3D) · NAC 479 · about 17 mi away
Control 157.2625, 157.755
Voice 157.95, 158.49, 158.64
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.