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Crystal Lake Police Frequencies

We do not have frequencies listed specifically for Crystal Lake in Aurora County, South Dakota yet. Countywide channels for Aurora County that may also cover this area are shown below when we have them. The closest trunked radio site we have is Stickney (South Dakota State Radio System), about 7 miles away.

About Crystal Lake Police Frequencies

  • Trunked radio systems that carry law-enforcement traffic here: South Dakota State Radio System: 3 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 Crystal Lake, start with the Stickney site of South Dakota State Radio System, about 7 miles away. Its control channels: 155.55, 157.47, 159.045 MHz.

Aurora County channels that also cover Crystal Lake

South Dakota State Radio System

AgencyDescriptionTalkgroupHexMode
Aurora County SheriffWhite Lake Public Safety1159487D
Aurora County SheriffAurora County Sheriff – Tactical Channel1160488D
Aurora County SheriffLaw 2116348bD

Nearest trunked radio sites

Distances are measured from the center of Crystal Lake.

Stickney · South Dakota State Radio System
RFSS 1 · Site 33 (hex 21) · NAC 470 · about 7 mi away
Control 155.55, 157.47, 159.045
Voice 159.39
Mitchell · South Dakota State Radio System
RFSS 1 · Site 11 (hex B) · NAC 470 · about 28 mi away
Control 159, 159.255, 159.84
Voice 155.64, 156.12, 159.45
Lake Andes (Radar Hill) · South Dakota State Radio System
RFSS 1 · Site 36 (hex 24) · about 39 mi away
Control 157.8, 157.92
Voice 158.04, 158.61
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.