From Freq Of Nature
- Region 1 Northern
- Region 2 Rocky Mountain
- Region 3 Southwestern
- Region 4 Inter-Mountain
- Region 5 Pacific Southwest
- Region 6 Pacific Northwest
- Region 8 Southern
- Region 9 Eastern
- Region 10 Alaska
Links of Interest
Wildland Fire Terminology
National Interagency Fire Center (NIFC)
Southwest Coordination Center (SWCC)
Common Frequencies
Air Guard
168.6250 MHz is the common air guard frequency and is always the last channel of all NIRSC radios. This frequency is used for air-to-air initial contact, emergency ground-to-air communications and initial call, recall and redirection.
Flight Following
168.6500 MHz is the national flight following frequency. In addition to flight following, this frequency is used for general administration of air traffic but is never used for ground-to-ground communications.
VHF-FM
National VHF-FM air frequencies are located in group 2 of the NIRSC radios. These frequencies have specific uses and the incident's dispatch center must notify the Geographic Area Coordination Center (GACC) for clearance. This is to avoid interference problems.
| Description
| Frequency
|
| Air Guard
| 168.6250
|
| Flight Following
| 168.6500
|
| Incident Command System (ICS) Callup / Smoke Jumpers
| 168.5500
|
| Air Safety
| 172.6000
|
| Air Tac 1
| 166.6750
|
| Air Tac 2
| 169.1500
|
| Air Tac 3
| 169.2000
|
| Air Tac 4
| 170.0000
|
| Air Tac 5
| 167.9500
|
VHF-AM (Victor)
There are six national AM frequencies that are used for aviation only. Additional frequencies may be used but these are common nation wide in all NIRSC radios.
Contrary to popular belief and older frequency publications, Victor 7 135.975 MHz is no longer included in the USFS radio plan. This frequency was pulled from the radio channel plan several years ago due to interference with other fixed aviation stations. While this frequency is not officially part of this plan it may be worth monitoring in certain areas since it is a common heliport frequency.
| Description
| Frequency
|
| VICTOR-1
| 122.9250
|
| VICTOR-2 Helicopter Air/Air
| 122.9750
|
| VICTOR-3 Helicopter
| 122.8500
|
| VICTOR-4 Helicopter
| 122.0250
|
| VICTOR-5 Helicopter Air/Ground
| 123.0500
|
| VICTOR-6 Helicopter
| 123.0750
|
| Helicopter Calling
| 123.0250
|
| Air Tankers
| 123.9750
|
Logistics
Logistics radios are used for support personnel, e.g., Plans, Logistics, Finance. The radios can operate independently or in conjunction with UHF repeaters. The radios have a toggle switch on top. This is the talk-around switch and, when activated, the radio frequency moves 5 MHz up in frequency on all transmit channels, receive channels are not changed.
Logistic repeaters are a portable battery operated repeater designed for mountainous terrain and/or extended area coverage.
| Description
| Frequency
|
| L1 Group 2, Ch 2
| 414.6500
|
| L2 Group 2, Ch 4
| 415.4000
|
| L3 Group 2, Ch 6
| 415.5000
|
| L4 Group 1, Ch 1
| 417.3000
|
| L5 Group 1, Ch 2
| 417.3500
|
| L6 Group 1, Ch 3
| 417.5000
|
| L7 Group 1, Ch 4
| 417.8000
|
Command
| Description
| Frequency
|
| Command 1
| 168.7000
|
| Command 2
| 168.1000
|
| Command 3
| 168.0750
|
| Command 4
| 169.9750
|
| Command 5
| 169.1750
|
Tactical
| Description
| Frequency
|
| Tac 1
| 168.0500
|
| Tac 2
| 168.2000
|
| Tac 3
| 168.6000
|
| Tac 4
| 173.9125
|
| Tac 5
| 173.9625
|
| Tac 6
| 173.9875
|
UHF Links
| Frequency
|
| 415.2250
|
| 415.2500
|
| 415.2750
|
| 415.3250
|
| 415.3750
|
| 415.4250
|
| 415.4500
|
| 415.4750
|
| 415.5250
|
| 415.5500
|
| 415.6500
|
| 415.7500
|
Region 3 Southwestern
| Description
| Frequency
|
| CH-09 TAC 1
| 168.0500
|
| CH-10 TAC 2
| 168.2000
|
| CH-11 TAC 3
| 168.6000
|
| CH-12 TRAVEL NET
| 168.3500
|
| CH-14
| 168.6250
|
| COMMAND 1
| 168.7000
|
| COMMAND 2
| 168.1000
|
| COMMAND 3
| 168.0750
|
| COMMAND 4
| 169.9750
|
| COMMAND 5
| 169.1750
|
| TAC 1
| 168.0500
|
| TAC 2
| 168.2000
|
| TAC 3
| 168.6000
|
| TAC 4
| 173.9125
|
| TAC 5
| 173.9625
|
| TAC 6
| 173.9875
|
| TRAVEL NET
| 168.3500
|
| LAW ENFORCEMENT
| 168.0250
|
| LAW ENFORCEMENT INTERAGENCY
| 168.5500
|
Fire Air Operations
Guard One
168.6250 MHz C110.9
Designated as the emergency channel, this is a contact and emergency frequency for use between aircraft and ground units.
Flight Following
168.6500 MHz CSQ
Flight following frequency for ground-to-air communications between base stations and aircraft. Air tanker bases, primary heliports, and dispatch offices use this frequency for a discussion channel to aircraft.
Common Air Frequencies
| Description
| Frequency
|
| AIR OPERATIONS
| 122.9250
|
| AIR OPERATIONS - HELICOPTERS
| 122.8500
|
| AIR OPERATIONS - HELICOPTERS
| 123.0750
|
| AIR OPERATIONS - HELICOPTERS AIR/GROUND
| 123.0500
|
| AIR OPERATIONS - HELICOPTERS AIR-AIR
| 122.9750
|
| AIR OPERATIONS - HELICOPTERS CALLING
| 123.0250
|
| AIR TANKER BASES
| 123.9750
|
| AIR TANKERS (SPECIAL CONDITION)
| 135.9750
|
Air Tactic Frequencies
| Description
| Frequency
|
| AIR-1
| 166.6750
|
| AIR-2
| 169.1500
|
| AIR-3
| 169.2000
|
| AIR-4
| 170.0000
|
| AIR-5
| 167.9500
|
Albuquerque Zone (ABZ)
| Description
| Frequency
|
| CIBOLA DISPATCH
| 171.4500
|
| FIRE NET
| 168.6000
|
| AIR TAC EAST
| 170.0000
|
| AIR TAC WEST
| 169.1500
|
| AIR INITIAL ATTACK EAST
| 119.5750
|
| AIR INITIAL ATTACK WEST
| 118.7750
|
Central Arizona Zone (CAZ)
| Description
| Frequency
|
| PHOENIX DISPATCH
| 164.1250
|
| FIRE NET
| 168.2000
|
| FOREST NET 1
| 171.5000
|
| FOREST NET 2
| 170.5000
|
| SERVICE NET
| 168.7250
|
| FIRE CREWS
| 168.3250
|
| AIR TAC
| 170.0000
|
| AIR INITIAL ATTACK
| 126.3250
|
| AIR OPS
| 123.5000
|
Central West Zone (CWZ)
| Description
| Frequency
|
| PRESCOTT DISPATCH
| 168.1750
|
| FIRE NET
| 168.2000
|
| FOREST NET
| 172.2250
|
| AIR TAC
| 166.9750
|
| AIR INITIAL ATTACK
| 135.6750
|
Flagstaff Zone (FLZ)
| Description
| Frequency
|
| FLAGSTAFF DISPATCH
| 171.5500
|
| FIRE NET
| 168.6000
|
| AIR TAC
| 171.5750
|
| AIR INITIAL ATTACK
| 135.6500
|
| AIR OPS
| 122.5750
|
Grand Canyon Zone (GCZ)
| Description
| Frequency
|
| WILLIAMS DISPATCH NORTH
| 168.7500
|
| WILLIAMS DISPATCH SOUTH
| 170.5500
|
| FOREST NET 1
| 169.9000
|
| FOREST NET 2
| 170.5500
|
| FIRE NET
| 168.0500
|
| AIR TAC
| 171.4750
|
| AIR INITIAL ATTACK
| 136.6000
|
Gila-Las Cruces Zone (GLZ)
| Description
| Frequency
|
| GILA DISPATCH NORTH
| 169.9750
|
| GILA DISPATCH SOUTH
| 169.1750
|
| FIRE NET
| 168.2000
|
| AIR TAC
| 171.4750
|
| AIR INITIAL ATTACK
| 120.7500
|
Lincoln Zone (LNZ)
| Description
| Frequency
|
| LINCOLN DISPATCH
| 169.1250
|
| FIRE NET
| 168.0500
|
| AIR TAC
| 170.0000
|
| AIR INITIAL ATTACK EAST
| 119.9750
|
| AIR INITIAL ATTACK WEST
| 135.5500
|
Southeast Arizona Zone (SEZ)
| Description
| Frequency
|
| CORONADO DISPATCH
| 169.6000
|
| FIRE NET
| 168.6000
|
| FOREST NET
| 168.1500
|
| AIR TAC
| 171.4250
|
| AIR INITIAL ATTACK
| 135.6250
|
| AIR OPS
| 122.7500
|
Santa Fe Zone (SNZ)
| Description
| Frequency
|
| SANTA FE DISPATCH
| 172.3000
|
| FIRE NET
| 168.2000
|
| AIR TAC
| 166.6875
|
| AIR INITIAL ATTACK
| 119.4250
|
Taoz Zone (TAZ)
| Description
| Frequency
|
| CARSON DISPATCH
| 169.1750
|
| FIRE NET
| 168.0500
|
| AIR TAC
| 171.4250
|
| AIR INITIAL ATTACK EAST
| 118.9750
|
| AIR INITIAL ATTACK WEST
| 120.1250
|
White Mountain Zone (WMZ)
| Description
| Frequency
|
| SPRINGERVILLE DISPATCH EAST
| 169.8750
|
| SPRINGERVILLE DISPATCH WEST
| 169.9500
|
| FIRE NET
| 168.0500
|
| AIR TAC
| 171.1375
|
| AIR TAC
| 172.3250
|
| AIR INITIAL ATTACK
| 118.9500
|
| AIR OPS
| 122.4250
|
Region 5 Pacific Southwest
| Description
| Input
| Frequency
|
| National Travel Net (Calling)
| 168.3250
| 169.1250
|
| Command
| 168.1750
| 168.7750
|
| Project (HT Net)
|
| 168.6500
|
| North Zone Dispatch
|
| 166.5875
|
| South Zone Dispatch
| 166.5625
| 164.9125
|
| South Zone Fire Camp
|
| 164.1250
|
| Los Angeles Basin fire cache
| 168.7250
| 168.1250
|
| Law Enforcement
|
| 168.0250
|
| A-13 Common User Simplex
|
| 418.0500
|
| A-14 Common User Simplex
|
| 418.5750
|
| B-13 Common User Simplex
|
| 418.0750
|
| B-14 Common User Simplex
|
| 408.4000
|
North Zone (NZF)
El Dorado (ENF)
Klamath (KNF)
Lake Tahoe Basin (TMU)
Mendocino (MNF)
Modoc (MDF)
Plumas (PNF)
Shasta-Trinity (SHF)
Six Rivers (SRF)
Stanislaus (STF)
Tahao (TNF)
South Zone (SZF)
Angeles (ANF)
The Angeles National Forest was established by Executive Order in December, 1892. It covers over 650,000 acres and is the backyard playground to the huge metropolitan area of Los Angeles. The Angeles National Forest manages the watersheds within its boundaries to provide valuable water to southern California and to protect surrounding communities from catastrophic floods.
The land within the Forest is as diverse in appearance and terrain as it is in the opportunities it provides for enjoyment. Elevations range from 1,200 to 10,064 feet. Much of the Forest is covered with dense chaparral which changes to pine and fir-covered slopes as you reach the majestic peaks of the higher elevations.
The USDA Forest Service, Angeles National Forest, revised its radio communications system as of Spring 1999. The following frequency changes are the result of the new international frequency agreement and will eliminate the current forest radio frequency, 171.575 MHz. The Angeles National Forest Net is the primary emergency channel for dispatch and fire ground operations. The Angeles Administrative Net is the channel for standard day-to-day communications.
| Description
| Input
| Output
|
| F1 ANF Forest Net (Direct)
| 172.3750
| 172.3750
|
| F2 ANF Forest Net (Repeat)
| 169.9500
| 172.3750
|
| F3 ANF Administrative Net (Direct)
| 164.9375
| 164.9375
|
| F4 ANF Administrative Net (Repeat)
| 170.0750
| 164.9375
|
The following tone guard frequencies are also required when transmitting on direct and repeat channels. Tone number 8, at a frequency of 103.5 Hz, is required for transmitting on direct channels (F1 and F3). Tone numbers 1-14 are required for transmitting on repeat channels (F2 and F4), depending on the location. The following list shows the revised repeater tone frequencies and their respective locations.
| Location
| Tone
|
| 1 Mt. Waterman
| 110.9
|
| 2 Santiago Peak
| 123.0
|
| 3 Mt Hawkins
| 131.8
|
| 4 Frost Peak
| 136.5
|
| 5 Alpine Butte
| 146.2
|
| 6 Oat Mountain
| 156.7
|
| 7 Josephine Peak
| 167.9
|
| 8 Frazier Mountain
| 103.5
|
| 9 Pine Mountain
| 100.0
|
| 10 Burnt Peak
| 107.2
|
| 11 Magic Mountain
| 114.8
|
| 12 Mt. Lukens
| 114.8
|
| 13 Johnstone Peak
| 141.3
|
| 14 Grass Mountain
| 151.4
|
Cleveland (CNF)
Inyo (INF)
Los Padres (LPF)
San Bernardino (BNF)
Sequoia (SQF)
Sierra (SNF)
Region 8 Southern
| Description
| Frequency
| Tone
|
| AIR NET FLIGHT FOLLOWING
| 168.6500
| CSQ
|
| AIR GUARD
| 168.6250
| CSQ
|
| AIR TAC 1
| 166.6750
| CSQ
|
| AIR TAC 2
| 169.1500
| CSQ
|
| AIR TAC 3
| 169.2000
| CSQ
|
| AIR TAC 4
| 170.0000
| CSQ
|
| DISPATCH NET
| 171.5500
| CSQ
|
| ATLANTA DISPATCH
| 168.6500
| CSQ
|
| ALABAMA DISPATCH
| 168.7250
| CSQ
|
| HOT SPRINGS DISPATCH EAST
| 169.6750
| CSQ
|
| HOT SPRINGS DISPATCH WEST
| 169.1750
| CSQ
|
| TALLAHASSEE DISPATCH
| 168.6750
| CSQ
|
| ROANOKE DISPATCH
| 171.5750
| CSQ
|
| GAINESVILE DISPATCH
| 168.7750
| CSQ
|
| DANIEL BOONE DISPATCH
| 171.5250
| 103.5
|
| PINEVILLE DISPATCH
| 169.9250
| 110.9
|
| JACKSON DISPATCH
| 168.6750
| CSQ
|
| ASHEVILLE DISPATCH
| 168.7250
| CSQ
|
| SAVANNAH RIVER DISPATCH
| 169.9750
| CSQ
|
| COLUMBIA DISPATCH
| 164.1250
| 136.5
|
| COLUMBIA DISPATCH
| 168.6750
| CSQ
|
| CHEROKEE DISPATCH
| 169.9250
| 103.5
|
| LUFKIN DISPATCH
| 168.7250
| 114.8
|
