Sheldon also extends into Sioux County.
About Sheldon Police Frequencies
- 3 conventional channels are analog FM, so any scanner can receive them. Enter the frequency and set the tone shown in the table.
- 2 conventional channels use a digital mode (P25), which needs a scanner that decodes that mode.
Sheldon conventional frequencies
Dispatch
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Sheldon Police | Sheldon Police – Dispatch | 154.9050 In 158.9625 | NAC 171 | P25 | KAA457 |
O'Brien County channels that also cover Sheldon
Dispatch
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| O'Brien County Sheriff | O'Brien County Sheriff – Dispatch | 154.7400 In 158.7900 | NAC 071 | P25 | WNYK934 |
Tactical
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| O'Brien County Sheriff | O'Brien County Sheriff – Tactical Channel | 155.1900 | FM | KAA317 |
Talk-around & Car-to-Car
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| O'Brien County Sheriff | Sheriff Information – Base | 155.6100 | FM | KAA317 | |
| O'Brien County Sheriff | Sheriff Information – Mobiles | 155.9100 | FM | KAA317 |
Nearest trunked radio sites
Distances are measured from the center of Sheldon.
Sanborn · Iowa Statewide Interoperable Communications System (ISICS)
RFSS 1 · Site 71 (hex 47) · about 11 mi away
Control 770.40625
Voice 769.15625, 769.40625, 769.65625, 769.90625, 770.15625
Rock Rapids · Iowa Statewide Interoperable Communications System (ISICS)
RFSS 1 · Site 51 (hex 33) · NAC 4C2 · about 22 mi away
Control 773.34375, 774.59375, 774.84375
Voice 773.09375
Cherokee · Iowa Statewide Interoperable Communications System (ISICS)
RFSS 1 · Site 22 (hex 16) · NAC 4C3 · about 28 mi away
Control 774.03125, 774.28125, 774.78125
Voice 773.03125, 773.28125, 773.53125, 773.78125
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 Sheldon?
Dispatch channels listed for Sheldon: Sheldon Police 154.9050 MHz (NAC 171).