Spring Hill also extends into Maury County.
About Spring Hill 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.
- Trunked radio systems that carry law-enforcement traffic here: Middle Tennessee Regional Trunked Radio System: 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 Spring Hill, start with the Theta site of Tennessee Advanced Communications Network (TACN), about 8 miles away. Its control channels: 770.36875, 770.78125 MHz.
- 2 listed entries are marked encrypted. No scanner can decode encrypted audio.
Williamson County channels that also cover Spring Hill
Jails & Corrections
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Williamson County Jail | County Jail | 453.6875 In 458.6875 | 136.5 PL | FMN | WNHN698 |
Middle Tennessee Regional Trunked Radio System
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| State and Federal Law Enforcement | US Marshal Service | 2165 | 875 | D |
| State and Federal Law Enforcement | Tennessee Wildlife Resource Agency | 2329 | 919 | D |
2 encrypted talkgroups (cannot be monitored)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Williamson Sheriff | Williamson Sheriff – Dispatch | 20230 | 4f06 | D Encrypted |
| Williamson/Maury Co - Spring Hill | Williamson/Maury Co – Spring Hill – Dispatch | 20424 | 4fc8 | D Encrypted |
Nearest trunked radio sites
Distances are measured from the center of Spring Hill.
Theta · Tennessee Advanced Communications Network (TACN)
RFSS 1 · Site 59 (hex 3B) · NAC 2A0 · about 8 mi away
Control 770.36875, 770.78125
Voice 769.20625, 771.58125, 773.79375
Thompson Station (MTE) · Tennessee Advanced Communications Network (TACN)
RFSS 1 · Site 67 (hex 43) · NAC 2A0 · about 10 mi away
Control 854.9125, 856.8625
Voice 851.225, 858.3375
Franklin (*) · Middle Tennessee Regional Trunked Radio System
RFSS 3 · Site 21 (hex 15) · about 11 mi away
Control 774.86875
Voice 769.23125, 769.38125, 769.73125, 769.88125, 774.51875
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.