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.
- 1 conventional channel uses a digital mode (DMR), which needs a scanner that decodes that mode.
- Trunked radio systems that carry law-enforcement traffic here: Indiana Project Hoosier SAFE-T: 2 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 Delphi site of Indiana Project Hoosier SAFE-T, about 4 miles away. Its control channels: 856.1375, 858.0875 MHz.
Carroll County channels that also cover Madison
Tactical
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Carroll County Sheriff | Mobile Extenders | 465.2000 | FMN | KSC478 |
Jails & Corrections
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Carroll County Sheriff | County Jail – Operations | 453.6875 In 458.6875 | DMR | WROG448 |
Indiana Project Hoosier SAFE-T
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Carroll County Sheriff | Carroll County Sheriff – Dispatch | 10050 | 2742 | D |
| Carroll County Sheriff | Car-to-Car | 10048 | 2740 | D |
Nearest trunked radio sites
Distances are measured from the center of Madison.
Delphi · Indiana Project Hoosier SAFE-T
RFSS 1 · Site 96 (hex 60) · NAC 6B6 · about 4 mi away
Control 856.1375, 858.0875
Voice 852.4625, 852.9625, 853.475
Flora · Indiana Project Hoosier SAFE-T
RFSS 1 · Site 66 (hex 42) · NAC 6B6 · about 7 mi away
Control 853.6125, 854.9625
Voice 851.825, 852.9875, 857.0625
Geetingsville · Indiana Project Hoosier SAFE-T
RFSS 1 · Site 25 (hex 19) · NAC 6B5 · about 11 mi away
Control 852.95, 853.95
Voice 851.45, 851.95, 852.45, 856.7125
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.