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Greenfield Police Frequencies

We do not have frequencies listed specifically for Greenfield in Gallia County, Ohio yet. Countywide channels for Gallia County that may also cover this area are shown below when we have them. The closest trunked radio site we have is Oak Hill (Ohio MARCS-IP: Multi-Agency Radio Communications), about 4 miles away.

About Greenfield 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.
  • Trunked radio systems that carry law-enforcement traffic here: Ohio MARCS-IP: Multi-Agency Radio Communications: 7 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 Greenfield, start with the Oak Hill site of Ohio MARCS-IP: Multi-Agency Radio Communications, about 4 miles away. Its control channels: 774.18125, 774.73125 MHz.

Gallia County channels that also cover Greenfield

Dispatch

AgencyDescriptionFrequency (MHz)ToneModeFCC
Gallia County Sheriff BackupGallia County Sheriff – Dispatch155.5650
In 158.9100
127.3 PLFMWPEU876

Tactical

AgencyDescriptionFrequency (MHz)ToneModeFCC
Gallia County Sheriff BackupGallia County Sheriff – Tactical Channel155.5050FM—

Ohio MARCS-IP: Multi-Agency Radio Communications

AgencyDescriptionTalkgroupHexMode
Gallia County SheriffGallia County Sheriff – Dispatch54800d610D
Gallia County SheriffEMS Operations190094a41D
Gallia County SheriffGallia County Sheriff – Tactical Channel190124a44D
Gallia County SheriffJail Operations190234a4fD
Gallia County SheriffGallia County Sheriff – Tactical Channel54793d609D
Gallia County SheriffSheriff Events54804d614D
Gallia County State CorrectionsAdult Parole Authority – Portsmouth Unit52885ce95D

Nearest trunked radio sites

Distances are measured from the center of Greenfield.

Oak Hill · Ohio MARCS-IP: Multi-Agency Radio Communications
RFSS 3 · Site 52 (hex 34) · NAC 343 · about 4 mi away
Control 774.18125, 774.73125
Voice 772.95625, 773.88125
Pyro (Oak Hill) · Ohio MARCS-IP: Multi-Agency Radio Communications
RFSS 3 · Site 47 (hex 2F) · NAC 34E · about 7 mi away
Control 769.70625, 773.53125
Voice 769.45625, 851.625, 852.4375, 858.4625
Carmel Church · Ohio MARCS-IP: Multi-Agency Radio Communications
RFSS 3 · Site 46 (hex 2E) · NAC 34D · about 11 mi away
Control 773.18125, 774.38125
Voice 772.15625, 772.75625
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.