About Underwood 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.
- 1 conventional channel uses a digital mode (P25), which needs a scanner that decodes that mode.
- Trunked radio systems that carry law-enforcement traffic here: North Dakota Statewide Interoperable Radio Network (SIRN 20/20): 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 Underwood, start with the Underwood site of North Dakota Statewide Interoperable Radio Network (SIRN 20/20), about 16 miles away. Its control channels: 853.6375, 853.8625 MHz.
- 6 listed entries are marked encrypted. No scanner can decode encrypted audio.
McLean County channels that also cover Underwood
Dispatch
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| McLean County Sheriff | Mclean So – Encrypted | 151.2050 In 155.8500 | NAC 256 | P25 Encrypted | WQGL765 |
| McLean County Sheriff | Mclean So – Dispatch | 151.2050 In 155.8500 | 100.0 PL | FMN Encrypted | WQGL765 |
Tactical
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| McLean County Sheriff | Sheriff's Office – FIRE – EMS Car To Car | 155.8950 | CSQ | FMN | WQBR517 |
North Dakota Statewide Interoperable Radio Network (SIRN 20/20)
4 encrypted talkgroups (cannot be monitored)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| McLean County Sheriff | County Sheriff's Main | 28101 | 6dc5 | T Encrypted |
| McLean County Sheriff | County Sheriff Drug Task Force | 28106 | 6dca | T Encrypted |
| McLean County Sheriff | Sheriff's Office Operations | 28102 | 6dc6 | T Encrypted |
| McLean County Sheriff | Sheriff's Office Operations | 28103 | 6dc7 | T Encrypted |
Nearest trunked radio sites
Distances are measured from the center of Underwood.
Underwood · North Dakota Statewide Interoperable Radio Network (SIRN 20/20)
RFSS 1 · Site 106 (hex 6A) · about 16 mi away
Control 853.6375, 853.8625
Voice 853.4125
Hannover · North Dakota Statewide Interoperable Radio Network (SIRN 20/20)
RFSS 1 · Site 23 (hex 17) · NAC A66 · about 23 mi away
Control 852.1875, 852.4125
Voice 851.9125
Center · North Dakota Statewide Interoperable Radio Network (SIRN 20/20)
RFSS 1 · Site 104 (hex 68) · NAC A66 · about 25 mi away
Control 852.3625
Voice 851.8625, 852.1375
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 Underwood?
We do not have a dispatch channel listed specifically for Underwood. County-level dispatch channels in the same county: McLean County Sheriff 151.2050 MHz (NAC 256); McLean County Sheriff 151.2050 MHz (100.0 PL).