About Smithfield Police Frequencies
- Trunked radio systems that carry law-enforcement traffic here: Johnston County: 1 talkgroup; Johnston County: 7 talkgroups; North Carolina VIPER: 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 Smithfield, start with the Smithfield site of Johnston County, about 4 miles away. Its control channels: 851.225, 851.725, 852.2 MHz.
- 7 listed entries are marked encrypted. No scanner can decode encrypted audio.
Smithfield trunked talkgroups
Johnston County
1 encrypted talkgroup (cannot be monitored)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Smithfield Police | Smithfield Police – Dispatch | 4001 | fa1 | T Encrypted |
Johnston County channels that also cover Smithfield
Johnston County
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Johnston County Sheriff | Johnston County Sheriff – Tactical Channel | 5001 | 1389 | T |
6 encrypted talkgroups (cannot be monitored)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| County Police | County Police Department Dispatch | 4004 | fa4 | T Encrypted |
| Johnston County Sheriff | Johnston County Sheriff – Dispatch | 5000 | 1388 | T Encrypted |
| Johnston County Sheriff | Narcotics | 5002 | 138a | T Encrypted |
| Johnston County Sheriff | Johnston County Sheriff – Tactical Channel | 5005 | 138d | T Encrypted |
| County Police | County Police Department Call | 4035 | fc3 | T Encrypted |
| Johnston County Sheriff | County Jail | 5011 | 1393 | D Encrypted |
North Carolina VIPER
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Johnston County Sheriff | Johnston County Sheriff – Dispatch | 26003 | 6593 | D |
| Johnston County Sheriff | Johnston County Sheriff – Tactical Channel | 26004 | 6594 | D |
Nearest trunked radio sites
Distances are measured from the center of Smithfield.
Smithfield · Johnston County
RFSS 4 · Site 4 (hex 4) · NAC 004 · about 4 mi away
Control 851.225, 851.725, 852.2, 852.7, 853.225, 855.7125
Smithfield · North Carolina VIPER
RFSS 1 · Site 53 (hex 35) · NAC 1F2 · about 4 mi away
Control 856.0125, 859.6875
Voice 851.35, 852.5875, 853.175, 853.675, 853.9, 854.8625
Clayton · Johnston County
RFSS 3 · Site 3 (hex 3) · NAC 3 · about 9 mi away
Control 853.9875, 856.7125, 857.7125, 858.1375, 858.7125, 859.7125
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.
Common questions
Are Smithfield police talkgroups encrypted?
1 of the 1 talkgroups listed for Smithfield are marked fully or partly encrypted; a scanner cannot decode encrypted audio.