About Douglas County Police Frequencies
- Trunked radio systems that carry law-enforcement traffic here: State of Colorado DTRS: 24 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 Douglas County, start with the Franktown site of State of Colorado DTRS. Its control channels: 852.975, 853.25, 853.5 MHz.
- 14 listed entries are marked encrypted. No scanner can decode encrypted audio.
Douglas County trunked talkgroups
State of Colorado DTRS
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Douglas County Sheriff | Douglas County Sheriff – Tactical Channel (1011) | 1011 | 3f3 | D |
| Douglas County Sheriff | County Coroner | 1017 | 3f9 | D |
| Douglas County Sheriff | Sheriff Special Assignment | 1073 | 431 | D |
| Douglas County Sheriff | Sheriff Special Assignment | 1075 | 433 | D |
| Douglas County Sheriff | Sheriff Special Assignment | 1077 | 435 | D |
| Douglas County Sheriff | Douglas County Sheriff – Tactical Channel (1081) | 1081 | 439 | D |
| Douglas County Sheriff | Douglas County Sheriff – Tactical Channel (1085) | 1085 | 43d | D |
| Douglas County Sheriff | Douglas County Sheriff – Tactical Channel (1087) | 1087 | 43f | D |
| Douglas County Sheriff | Sheriff Jail | 1069 | 42d | D |
| Douglas County Sheriff | Sheriff Jail Transport | 1071 | 42f | D |
14 encrypted talkgroups (cannot be monitored)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Douglas County Sheriff | Sheriff 1 Dispatch | 1033 | 409 | D Encrypted |
| Douglas County Sheriff | Douglas County Sheriff – Tactical Channel (1007) | 1007 | 3ef | D Encrypted |
| Douglas County Sheriff | Special Investigations | 1009 | 3f1 | D Encrypted |
| Douglas County Sheriff | Sheriff Administration | 1015 | 3f7 | D Encrypted |
| Douglas County Sheriff | Sheriff Supervisors | 1031 | 407 | D Encrypted |
| Douglas County Sheriff | Sheriff 2 | 1035 | 40b | D Encrypted |
| Douglas County Sheriff | Sheriff 3 | 1037 | 40d | D Encrypted |
| Douglas County Sheriff | Sheriff 4 | 1039 | 40f | D Encrypted |
| Douglas County Sheriff | Sheriff Investigations | 1067 | 42b | D Encrypted |
| Douglas County Sheriff | Sheriff SWAT | 1079 | 437 | D Encrypted |
| Douglas County Sheriff | Sheriff SWAT Administration | 1083 | 43b | D Encrypted |
| Douglas County Sheriff | Sheriff Training | 1089 | 441 | D Encrypted |
| Douglas County Sheriff | Highlands Ranch Law Enforcement Training Facility | 507 | 1fb | D Encrypted |
| Douglas County Sheriff | Sheriff Training | 1023 | 3ff | D Encrypted |
Radio system sites in Douglas County
Program the control channel first; your scanner finds the voice channels from it.
Franktown · State of Colorado DTRS
RFSS 1 · Site 10 (hex A) · NAC D1A
Control 852.975, 853.25, 853.5, 853.95
Voice 852.1375, 854.3125, 856.5875, 857.1125
Douglas Co South Simulcast · State of Colorado DTRS
RFSS 1 · Site 14 (hex E) · NAC D1E
Control 852.9, 853.2, 853.375, 853.9375
Voice 851.975, 852.3125, 856.1125, 857.1875, 858.1125, 858.5375, 859.1125, 859.5625
Swank · State of Colorado DTRS
RFSS 4 · Site 25 (hex 19) · NAC D19
Control 852.85, 853.075
Voice 851.075, 851.2875, 851.675, 852.275
Douglas Co North Simulcast · State of Colorado DTRS
RFSS 1 · Site 52 (hex 34) · NAC D14
Control 852.3875, 852.925, 853.525, 853.9
Voice 770.86875, 771.14375, 771.60625, 771.93125, 772.23125, 772.51875, 772.76875, 773.65625, 773.94375, 851.3, 851.825, 855.3125, 857.3375, 857.5875, 858.5875, 859.3375, 859.6875
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.
Cities & communities in Douglas County
Common questions
Are Douglas County police talkgroups encrypted?
14 of the 24 talkgroups listed for Douglas County are marked fully or partly encrypted; a scanner cannot decode encrypted audio.