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US Forest Service - Roosevelt National Forest (CO)

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The Roosevelt National Forest comprises 813,799 acres of mixed-conifer forest spread across the foothills and mountains of Larimer, Boulder, and Gilpin counties in north-central Colorado. Management of the forest is split into two ranger districts, the Boulder Ranger District, headquartered in Boulder and overseeing operations in Boulder and Gilpin Counties, and the Canyon Lakes Ranger District, headquartered in Fort Collins and in charge of operations in Larimer County. The forest is a sub-unit of the jointly administered Arapaho, Roosevelt, and Pawnee National Forests and Grasslands. Together the three management units comprise over 1.5 million acres of public land in the north-central Colorado Front Range.

Radio Frequencies

The forest relies upon the combined Arapaho, Roosevelt, Pawnee (ARP) radio network for communications. This radio network is a product of the combined administration of the Arapaho National Forest (in Clear Creek and Grand counties), the Roosevelt National Forest (in Larimer, Boulder, and Gilpin Counties), and the Pawnee National Grasslands (in eastern Weld County). Previously, the radio networks for these forests were divided into two separate systems: the Roosevelt Net (which also served Pawnee) and the Arapaho Net. The 2016 NTIA federal re-banding mandate resulted in additional improvements to these networks, causing them to be consolidated into a single network divided into three geographical areas: North, for Roosevelt and Pawnee operations, South, for Arapaho operations on the Clear Creek Ranger District, and West, for Arapaho operations on the Sulphur Ranger District. Dispatching and resource tracking on the Arapaho, Roosevelt, and Pawnee National Forests and Grasslands are handled through the Fort Collins Interagency Dispatch Center.


North Repeater Net (Roosevelt National Forest & Pawnee National Grasslands)

  • The North Net of the Arapaho, Roosevelt, Pawnee (ARP) radio system serves the Roosevelt National Forest and the Pawnee National Grassland in Larimer, Boulder, Gilpin, and Weld Counties.
  • "Tone #" refers to the National Standard Tone Numbering System used by the USFS, BLM, and other land management agencies and is only applicable to TX tones.
  • The North Net does not use any tones on output.
  • Daily Fire Management Briefings are broadcast by Fort Collins Dispatch at approximately 1000 and Fire Weather Forecast Discussions are broadcast at approximately 1600 from the Buckhorn Base/Repeater site.
CH TONE # RX FREQ RX TONE TX FREQ TX TONE Description Ranger District County Confirmation
North Direct 0 169.1750 CSQ 169.1750 CSQ ARP North Direct Canyon Lakes / Boulder / Pawnee Larimer / Boulder / Weld 2022.06
Deadman 1 169.1750 CSQ 164.1000 110.9 Deadman Mountain Repeater Canyon Lakes Larimer 2021.10
Buckhorn 2 169.1750 CSQ 164.1000 123.0 Buckhorn Mountain Repeater Canyon Lakes Larimer 2022.07
Twin Sisters 3 169.1750 CSQ 164.1000 131.8 Twin Sisters Peak Repeater Canyon Lakes / Boulder Larimer 2022.07
Thorodin 4 169.1750 CSQ 164.1000 136.5 Thorodin Mountain Repeater Boulder / Clear Creek Gilpin 2022.07
Jelm Mountain 5 169.1750 CSQ 164.1000 146.2 Jelm Mountain Repeater (Co-located w/ Medicine Bow NF Jelm Mtn Repeater) Canyon Lakes Albany County, WY 2022.07
Reno Hill 7 169.1750 CSQ 164.1000 167.9 Reno Hill Repeater Pawnee Weld 2022.07
Gunbarrel 8 169.1750 CSQ 164.1000 103.5 Gunbarrel Hill Repeater Boulder Boulder 2022.07
Mesa 14 169.1750 CSQ 164.1000 151.4 Mesa Hill Repeater Pawnee Weld
Reiradon ?? 169.1750 CSQ 164.1000 Reiradon Hill Repeater Pawnee Logan 2022.06
6 169.1750 CSQ 164.1000 156.7 Portable Repeater (Incident Specific) (Incident Specific) 2020.12


South Repeater Net (Arapaho National Forest)

  • The South Net of the Arapaho, Roosevelt, Pawnee (ARP) radio system serves the Clear Creek Ranger District of the Arapaho National Forest in Clear Creek County.
  • Information for the ARP South Net can be found by clicking the section header above or here: Arapaho National Forest


West Repeater Net (Arapaho National Forest)

  • The West Net of the Arapaho, Roosevelt, Pawnee (ARP) radio system serves the Sulpher Ranger District of the Arapaho National Forest in eastern Grand County.
  • Information for the ARP South Net can be found by clicking the section header above or here: Arapaho National Forest


Intra-Crew, Work, & Tactical Frequencies

  • General use work channels/frequencies are generally restricted to low power use in handhelds for the purpose of intra-crew communications. These frequencies are part of a shared NITA Itinerant/Common Use pool (see: Federal Government Itinerant) and not reserved for use by any one specific user/agency.
  • On extended attack incidents, frequencies from the National Incident Radio Support Cache pool are likely to be assigned.
  • Local/initial attack incidents may be assigned frequencies from the VHF portion of the NIFOG Interoperability pool (see: Common Public Safety#VHF High Band) to allow for direct coordination with local resources.
CH RX FREQ RX TONE TX FREQ TX TONE Description Notes Confirmation
"FIRETAC" / TAC-1 166.5625 166.5625 (Varies) Arapahoe, Roosevelt, Pawnee Fire TAC / Type III TAC-1 Forest-wide Initial Attack Fire Tactical / Type III Tactical. Exclusive assignment for ARP. Previously used as "ROOS WORK" Channel. Primarily used in CSQ, but CG tones may vary by district. 2022.06 (unable to capture tone)
R2 TAC-1 168.6750 168.6750 USFS Region 2 Tactical 1 Regional Type III Tactical. Has been used by ARP in the past, unknown if still used or authorized. Last reported in use in 2014.
R2 TAC-2 / TAC-2 168.7750 168.7750 USFS Region 2 Tactical 2 / Type III TAC-2 Regional Type III Tactical. Has been used by ARP in the past, unknown if still used or authorized. Last reported in use in 2016.
FTC SOA 169.9500 CSQ 165.2250 107.2 "Scene-of-Action" Command Repeater Portable Incident Command Repeater available for use on Type III incidents from Fort Collins Interagency Dispatch.
"ARP WORK" 168.7250 168.7250 (Varies) Arapahoe, Roosevelt, Pawnee Work Net / Type III Logistics Net Forest-wide simplex for intra-crew work/tactical use. Assigned for use as Logistics Net on Type III incidents. Exclusive assignment for ARP. Primarily used in CSQ, but CG tones may vary by district. 2022.07 (Briefly in use on Canyon View incident for line-of-sight comms).
"WORK 1" 163.7125 163.7125 (Varies) General Use Intra-Crew/Work Ch 1 Gov't Common 1, handheld use only. National Travel Net, IHC, and Intra-Crew frequency. Primarily used in CSQ, but CG tones may vary by district. 2022.07 (Briefly heard maintenance or recreation personnel calling on "Work 1." Unknown if ARF or PSF personnel).
WORK 2 / TAC-3 168.6125 168.6125 (Varies) General Use Intra-Crew/Work Ch 2 / Type III TAC-3 Gov't Common 3, handheld use only. Secondary IHC and Intra-Crew frequency. Assigned for use as TAC-3 on Type III incidents. Primarily used in CSQ, but CG tones may vary by district.


Air Operations

CH RX FREQ RX TONE TX FREQ TX TONE Description Notes Confirmation
"National" (NTL FLTF) 168.6500 110.9 168.6500 110.9 National Flight Following Frequency Used for dispatch, flight following, and/or redirection of aircraft or other air-to-ground administrative traffic. Not for incident or ground operations use. Appears in most radios as "NTL FLTF." Generally referred to on air as "National." Previously known as "Airnet." 2022.07 (in use daily with both PBC and FTC dispatch)
"AIRGUARD" 168.6250 110.9 168.6250 110.9 National Aircraft Emergency Frequency Continuous monitoring of this frequency is required of all tactical aircraft and dispatch offices. Restricted to emergency air-to-air or air-to-ground communications only. May be used for initial call, recall, and redirection of aircraft only if no other frequencies are available. Appears in all radios as "AIRGUARD" and generally as Channel 16 in portable radios to allow crews to quickly switch to it.
"Air-Ground 9" 166.9125 CSQ 166.9125 CSQ Colorado Zone 06 Primary Air-Ground Primary Air-Ground frequency for Fort Collins Dispatch Zone (Colorado Initial Attack Zone 06). National Air-Ground System Channel 9. Has been seen programmed as "CO06AG09" or "A/G 9" in some radios. 2022.07
"Air-Ground 58" 169.0875 CSQ 169.0875 CSQ Colorado Zone 06 Secondary Air-Ground Secondary Air-Ground frequency for Fort Collins Dispatch Zone (Colorado Initial Attack Zone 06). National Air-Ground System Channel 58. Has been seen programmed as "CO06AG58" or "A/G 58" in some radios.
"126.025" 126.025 AM 126.025 AM Colorado Zone 06 Primary Air-Air Primary Air-Air frequency for Fort Collins Dispatch Zone (Colorado Initial Attack Zone 06). 2022.07
124.375 AM 124.375 AM Colorado Zone 06 Secondary Air-Air Secondary Air-Air frequency for Fort Collins Dispatch Zone (Colorado Initial Attack Zone 06). Authorized for 2020 season, unknown if still in use.
133.750 AM 133.750 AM Colorado Zone 06 Tertiary Air-Air Tertiary Air-Air frequency for Fort Collins Dispatch Zone (Colorado Initial Attack Zone 06). Authorized for 2020 season, unknown if still in use.
"123.025" 123.025 AM 123.025 AM Nationwide Rotorwing Deconfliction Nationwide deconfliction position reporting frequency for rotorwing aircraft. Used to coordinate with outside agency and civilian aircraft. Not exclusive to USFS. 2022.06