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Ismay Police Frequencies

We do not have frequencies listed specifically for Ismay in Custer County, Montana yet. Countywide channels for Custer County that may also cover this area are shown below when we have them. The closest trunked radio site we have is Fallon (Montana Public Safety Communications System), about 34 miles away.

About Ismay 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.

Custer County channels that also cover Ismay

Dispatch

AgencyDescriptionFrequency (MHz)ToneModeFCC
Custer County SheriffCuster County Sheriff – Dispatch (Government Hill Repeater)155.5950
In 159.0300
162.2 PLFMNWNNB235

Talk-around & Car-to-Car

AgencyDescriptionFrequency (MHz)ToneModeFCC
Custer County SheriffCuster County Sheriff – Alternate153.9950FMNWNNB235
Custer County SheriffCuster County Sheriff – Alternate155.1000103.5 PLFMNWNNB235

Nearest trunked radio sites

Distances are measured from the center of Ismay.

Fallon · Montana Public Safety Communications System
RFSS 2 · Site 2 (hex 2) · about 34 mi away
Control 161.9625, 161.9875
Site 2-008 TBD · Montana Public Safety Communications System
RFSS 2 · Site 8 (hex 8) · about 36 mi away
Control 161.8125
Makoshika · Montana Public Safety Communications System
RFSS 2 · Site 5 (hex 5) · about 39 mi away
Control 161.9125, 161.9375
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 Ismay?

We do not have a dispatch channel listed specifically for Ismay. County-level dispatch channels in the same county: Custer County Sheriff 155.5950 MHz (162.2 PL).