About Madison 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 (NXDN48), which needs a scanner that decodes that mode.
- Trunked radio systems that carry law-enforcement traffic here: Indiana Project Hoosier SAFE-T: 4 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 Madison, start with the Marengo site of Indiana Project Hoosier SAFE-T, about 10 miles away. Its control channels: 853.875 MHz.
- 4 listed entries are marked encrypted. No scanner can decode encrypted audio.
Washington County channels that also cover Madison
Dispatch
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Washington County Sheriff | Washington County Sheriff – Dispatch | 151.4450 | NXDN48 | WQF450 |
Tactical
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Washington County Sheriff | Washington County Sheriff – Tactical Channel | 151.4075 | 203.5 PL | FMN | WQF450 |
Talk-around & Car-to-Car
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Washington County Sheriff | Car-to-Car | 159.3750 | NXDN48 | WQF450 |
Indiana Project Hoosier SAFE-T
4 encrypted talkgroups (cannot be monitored)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Washington County Sheriff | Washington County Sheriff – Dispatch | 21697 | 54c1 | D Encrypted |
| Washington County Sheriff | Operations | 21698 | 54c2 | D Encrypted |
| Washington County Sheriff | Washington County Sheriff – Tactical Channel | 21699 | 54c3 | D Encrypted |
| Washington County Sheriff | Law Data (County) | 21703 | 54c7 | D Encrypted |
Nearest trunked radio sites
Distances are measured from the center of Madison.
Marengo · Indiana Project Hoosier SAFE-T
RFSS 2 · Site 24 (hex 18) · NAC 6B2 · about 10 mi away
Control 853.875
Voice 851.975, 852.4625, 852.9625, 858.9625
Salem · Indiana Project Hoosier SAFE-T
RFSS 2 · Site 51 (hex 33) · NAC 6B5 · about 12 mi away
Control 853.975
Voice 852.7875, 853.2125, 853.8125
Paoli · Indiana Project Hoosier SAFE-T
RFSS 2 · Site 55 (hex 37) · NAC 6B5 · about 14 mi away
Control 853.2375
Voice 851.7, 851.875, 852.8375
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
What frequency do the police use in Madison?
We do not have a dispatch channel listed specifically for Madison. County-level dispatch channels in the same county: Washington County Sheriff 151.4450 MHz.