Big Rock also extends into Clinton County.
About Big Rock 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.
Scott County channels that also cover Big Rock
Dispatch
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Bettendorf Police and Fire Deparment | Bettendorf Police and Fire Deparment – Dispatch (F-1 Legacy) – PATCHED | 460.4500 In 465.4500 | 261 DPL | FMN | WNKB402 |
Nearest trunked radio sites
Distances are measured from the center of Big Rock.
Dewitt · Iowa Statewide Interoperable Communications System (ISICS)
RFSS 1 · Site 54 (hex 36) · NAC 4C5 · about 14 mi away
Control 769.45625, 769.95625, 770.45625
Voice 769.20625
Muscatine/Scott Co Simulcast · Iowa Statewide Interoperable Communications System (ISICS)
RFSS 1 · Site 14 (hex E) · NAC 4C0 · about 15 mi away
Control 773.83125, 774.08125, 774.33125
Voice 773.58125
Wilton · Iowa Statewide Interoperable Communications System (ISICS)
RFSS 2 · Site 149 (hex 95) · NAC 4C3 · about 16 mi away
Control 857.5375
Voice 854.4125, 856.1875, 858.5375
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 Big Rock?
We do not have a dispatch channel listed specifically for Big Rock. County-level dispatch channels in the same county: Bettendorf Police and Fire Deparment 460.4500 MHz (261 DPL).