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Trenton Police Frequencies

We do not have frequencies listed specifically for Trenton in Henry County, Iowa yet. Countywide channels for Henry County that may also cover this area are shown below when we have them. The closest trunked radio site we have is Fairfield (Iowa Statewide Interoperable Communications System (ISICS)), about 17 miles away.

About Trenton Police Frequencies

  • 2 conventional channels are analog FM, so any scanner can receive them. Enter the frequency and set the tone shown in the table.
  • 1 conventional channel uses a digital mode (P25), which needs a scanner that decodes that mode.

Henry County channels that also cover Trenton

Dispatch

AgencyDescriptionFrequency (MHz)ToneModeFCC
Henry County SheriffHenry County Sheriff – Dispatch155.0700
In 158.9100
NAC 441P25KNEQ823

Talk-around & Car-to-Car

AgencyDescriptionFrequency (MHz)ToneModeFCC
Henry County SheriffSheriff Information – Base155.5800146.2 PLFMNKNEQ823
Henry County SheriffSheriff Information – Mobiles155.9100FMNKNEQ823

Nearest trunked radio sites

Distances are measured from the center of Trenton.

Fairfield · Iowa Statewide Interoperable Communications System (ISICS)
RFSS 1 · Site 31 (hex 1F) · NAC 4C6 · about 17 mi away
Control 769.90625, 770.15625, 770.40625
Voice 769.65625
Beaverdale · Iowa Statewide Interoperable Communications System (ISICS)
RFSS 1 · Site 11 (hex B) · NAC 4C3 · about 26 mi away
Control 773.84375, 774.09375, 774.34375
Conesville · Iowa Statewide Interoperable Communications System (ISICS)
RFSS 2 · Site 70 (hex 46) · about 26 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.

Common questions

What frequency do the police use in Trenton?

We do not have a dispatch channel listed specifically for Trenton. County-level dispatch channels in the same county: Henry County Sheriff 155.0700 MHz (NAC 441).