About Alder 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.
- Trunked radio systems that carry law-enforcement traffic here: Montana Public Safety Communications System: 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 Alder, start with the Virginia City Hill site of Montana Public Safety Communications System, about 10 miles away. Its control channels: 151.2875, 154.085 MHz.
Madison County channels that also cover Alder
Dispatch
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Madison County Sheriff | Sheriff 1 Dispatch (includes Madison Police and Madison Valley Fire/EMS) | 155.0250 In 153.9350 | 141.3 PL | FMN | WNRR222 |
Talk-around & Car-to-Car
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Madison County Sheriff | Sheriff 2 | 154.0250 | FMN | WQAS328 | |
| Madison County Sheriff | Madison County Sheriff – Alternate | 159.0825 | FMN | WQHI513 |
Montana Public Safety Communications System
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Madison County Sheriff | Madison County Sheriff – Dispatch | 7165 | 1bfd | D |
| Madison County Sheriff | Madison County Sheriff – Tactical Channel | 7162 | 1bfa | D |
Nearest trunked radio sites
Distances are measured from the center of Alder.
Virginia City Hill · Montana Public Safety Communications System
RFSS 1 · Site 58 (hex 3A) · NAC 160 · about 10 mi away
Control 151.2875, 154.085
Voice 154.845, 161.8125
Big Sky Simulcast · Gallatin County / Bozeman
RFSS 1 · Site 2 (hex 2) · NAC 820 · about 35 mi away
Control 856.2125, 856.7125, 857.0125, 857.4375
Red Mountain · Montana Public Safety Communications System
RFSS 1 · Site 11 (hex B) · NAC 160 · about 36 mi away
Control 161.6, 161.825
Voice 161.79, 170.85
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 Alder?
We do not have a dispatch channel listed specifically for Alder. County-level dispatch channels in the same county: Madison County Sheriff 155.0250 MHz (141.3 PL).