About Yarmouth 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: Iowa Statewide Interoperable Communications System (ISICS): 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 Yarmouth, start with the Beaverdale site of Iowa Statewide Interoperable Communications System (ISICS), about 10 miles away. Its control channels: 773.84375, 774.09375, 774.34375 MHz.
- 1 listed entry is marked encrypted. No scanner can decode encrypted audio.
Des Moines County channels that also cover Yarmouth
Dispatch
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Des Moines County - DesCom | Augusta Police | 453.9250 In 458.9250 | 162.2 PL | FMN | KQT250 |
Iowa Statewide Interoperable Communications System (ISICS)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Des Moines County Sheriff | DMCo Sheriff | 26720 | 6860 | T |
1 encrypted talkgroup (cannot be monitored)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Des Moines County Sheriff | Law 26723 | 26723 | 6863 | T Encrypted |
Nearest trunked radio sites
Distances are measured from the center of Yarmouth.
Beaverdale · Iowa Statewide Interoperable Communications System (ISICS)
RFSS 1 · Site 11 (hex B) · NAC 4C3 · about 10 mi away
Control 773.84375, 774.09375, 774.34375
Louisa · Iowa Statewide Interoperable Communications System (ISICS)
RFSS 1 · Site 58 (hex 3A) · NAC 4C5 · about 16 mi away
Control 773.05625, 773.30625, 773.80625, 774.05625, 774.30625
Conesville · Iowa Statewide Interoperable Communications System (ISICS)
RFSS 2 · Site 70 (hex 46) · about 25 mi away
Control 856.5375
Voice 854.0375, 854.3375, 855.4875
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.