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Rockville Police Frequencies

We do not have frequencies listed specifically for Rockville in Charleston County, South Carolina yet. Countywide channels for Charleston County that may also cover this area are shown below when we have them. The closest trunked radio site we have is Edisto Island (Charleston County) (Palmetto 800), about 6 miles away.

About Rockville Police Frequencies

  • 5 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: Palmetto 800: 39 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 Rockville, start with the Edisto Island (Charleston County) site of Palmetto 800, about 6 miles away. Its control channels: 853.45, 853.9125 MHz.
  • 25 listed entries are marked encrypted. No scanner can decode encrypted audio.

Charleston County channels that also cover Rockville

Dispatch

AgencyDescriptionFrequency (MHz)ToneModeFCC
Charleston County SheriffSheriff Awendaw Repeater852.8250156.7 PLFMNWQBD658
Colleges and UniversitiesCollege of Charleston Public Safety857.9875
In 812.9875
103.5 PLFMWPPV344

Tactical

AgencyDescriptionFrequency (MHz)ToneModeFCC
Charleston County SheriffCharleston Police Department Regional Police155.0700186.2 PLFMKJK696
Charleston County SheriffCharleston Co. Jail – Back-up854.9875
In 809.9875
156.7 PLFM—

Talk-around & Car-to-Car

AgencyDescriptionFrequency (MHz)ToneModeFCC
Colleges and UniversitiesCollege of Charleston Public Safety858.9875
In 813.9875
103.5 PLFMWPPV344

Palmetto 800

AgencyDescriptionTalkgroupHexMode
Charleston Co. Sheriff's OfficeAll1665681D
Charleston Co. Sheriff's OfficeLE Common1666682D
Charleston Co. Sheriff's OfficeCourts1687697D
Charleston Co. Sheriff's OfficeDive Team1688698D
SC State Agencies - Charleston CountySC Highway Patrol1605645D
SC State Agencies - Charleston CountySC Highway Patrol1606646D
SC State Agencies - Charleston CountySC Seahawk161064aD
SC State Agencies - Charleston CountySC Seahawk161164bD
SC State Agencies - Charleston CountySC Seahawk161264cD
Charleston Co. Detention CenterAdministration17066aaD
Charleston Co. Detention CenterEnvironmental17076abD
Charleston Co. Detention CenterTransport17086acD
Charleston Co. Sheriff's OfficeCourts1686696D
Charleston Co Government AgenciesJail15145eaD
25 encrypted talkgroups (cannot be monitored)
AgencyDescriptionTalkgroupHexMode
Charleston Co. Sheriff's OfficeNorth Dispatch1667683D
Charleston Co. Sheriff's OfficeWest Dispatch1669685D
SC State Agencies - Charleston CountySC Ports Authority Police Department Operations1620654D
Charleston Co. Aviation AuthorityPolice Department Operations17606e0D
Charleston Co. Sheriff's OfficeNorth Tactical1668684D
Charleston Co. Sheriff's OfficeWest Tactical1670686D
Charleston Co. Sheriff's OfficeCharleston Co. Sheriff's Office – Tactical Channel1671687D
Charleston Co. Sheriff's OfficeCID1673689D
Charleston Co. Sheriff's OfficeTraffic167468aD
Charleston Co. Sheriff's OfficeSWAT167568bD
Charleston Co. Sheriff's OfficeSWAT167668cD
Charleston Co. Sheriff's OfficeMetro1682692D
Charleston Co. Sheriff's OfficeMetro1683693D
Charleston Co. Sheriff's OfficeSheriff DEA Task Force1684694D
Charleston Co. Sheriff's OfficeSheriff DEA Task Force1685695D
Charleston Co. Sheriff's OfficeMarine Patrol1689699D
Charleston Co. Sheriff's OfficeHarbor169169bD
Charleston Co. Sheriff's OfficeOperations16976a1D
Charleston Co. Sheriff's OfficeOperations 169816986a2D
SC State Agencies - Charleston CountySC Law Enforcement Division 11607647D
SC State Agencies - Charleston CountySC Law Enforcement Division 21608648D
SC State Agencies - Charleston CountySC Ports Authority Police Department Administration1621655D
SC State Agencies - Charleston CountySC Ports Authority Police Department Command1622656D
Charleston Co. Detention CenterOperations17056a9D
Charleston Co. Sheriff's OfficeWarrants1680690D

Nearest trunked radio sites

Distances are measured from the center of Rockville.

Edisto Island (Charleston County) · Palmetto 800
RFSS 1 · Site 11 (hex B) · about 6 mi away
Control 853.45, 853.9125
Voice 851.75, 852.075, 852.45, 852.95
Ravenel · Palmetto 800
RFSS 1 · Site 59 (hex 3B) · NAC 1De · about 9 mi away
Control 851.825
Voice 851.325, 852.2125, 852.5375, 853.0375
Charleston Simulcast (State) · Palmetto 800
RFSS 1 · Site 9 (hex 9) · NAC 1DE · about 21 mi away
Control 857.9625, 858.3375, 858.7125, 858.8375
Voice 852.2625, 854.6375, 854.9875, 855.1375, 856.3375, 856.8375, 857.3375, 857.8375, 859.6875, 859.8375, 859.9625
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 Rockville?

We do not have a dispatch channel listed specifically for Rockville. County-level dispatch channels in the same county: Charleston County Sheriff 852.8250 MHz (156.7 PL).