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United States Forest Service (CA)


Angeles National Forest (ANF - Forest #01)

Radio System

Channel Lineup

Most radios on the forest have 9 frequencies in common: ANF FN1 and ANF FN2 (Forest Net), ANF AN1 and ANF AN2 (Admin Net), NIFC tactical channels 1 through 3, and two Region 5 Air-to-Ground frequencies. Each ranger district, and crews within each ranger district, may have different channel lineups, but they will usually have these nine in common. The variations between ranger districts and crews involve frequencies belonging to other agencies such as Los Angeles County Fire, San Bernardino County Fire, CalFIRE, and the Bureau of Land Management, as well as frequencies of adjacent National Forests.

ANF FN1 and ANF FN2 are called "Forest Net" and are used primarily for fire and emergency traffic. ANF AN1 and ANF AN2 are called "Admin Net" and are used for routine communications. The channels ANF FN1 and ANF AN1 are simplex frequencies and ANF FN2 and ANF AN2 are repeated.

When users transmit on ANF FN1 or ANF AN1 using tone 8 (103.5 Hz) their transmission can be received by dispatch on the forest's 9 remote bases. These remote bases are linked to dispatch and the Forest Supervisor's Office in Arcadia. Most of these remote bases are co-located with repeaters and some are not. When someone communicates to dispatch on ANF FN1 or ANF AN1 it is not picked up by a repeater, and receiving them requires being close enough to receive simplex traffic. On the other hand, if users transmit on ANF FN2 or ANF AN2, the tone in use must match a repeater within range or their transmission will not be heard.

The 9 remote bases are located at: Fox Field (dispatch office), Arcadia (Forest Supervisor's Office), Frazier Peak, Warm Springs, Magic Mountain, Mt. Lukens, Blue Ridge, Johnstone Peak and Santiago Peak. Those remote bases that are not co-located with a repeater are: Fox Field, Arcadia, Warm Springs and Blue Ridge.

Intra-crew and tactical communications on the Angeles NF take place on the regional project net or on National Crew Net 163.7125. The 6 NIFC tactical frequencies may not be used for intra-crew communications or for the initial attack phase of a fire. All NIFC frequencies are reserved for use on "National Fires." These are fires where a National Type I or Type II incident management team is in command.

Angeles National Forest Channel Lineup
Channel Tone(s) Rx Tx Alpha Tag Description
18172.3750172.3750ANF FN1*Forest Net Direct
21-14172.3750169.9500ANF FN2Forest Net Repeat
38164.9375164.9375ANF AN1*Admin Direct
41-14164.9375170.0750ANF AN2Admin Repeat
5164.1250164.1250ANF SN1*Service Net Direct
63, 5, 14164.1250164.8250ANF SN2Service Net Repeat
7168.0500168.0500N TAC 1NIFC TAC 1
8168.2000168.2000N TAC 2NIFC TAC 2
9168.6000168.6000N TAC 3NIFC TAC 3
10168.4875168.4875R5 A/G53Region 5 Air to Ground 53
11169.1125169.1125R5 A/G59Region 5 Air to Ground 59

Regional project net is 168.6625 simplex (transmit and receive frequencies the same), and available for fire and non-fire uses. However, Regional 5 project net only appears in programming for recreation crews at this time.


The Angeles National Forest (ANF) radio system is comprised of 14 repeater sites situated on various mountain peaks in and around the forest which are linked to the dispatch center at Fox Field near Palmdale. Each repeater site functions as both a repeater and as a receiving antenna for dispatch.

Each repeater operates on the same input/output frequency pairs but uses a different CTCSS tone on the input. By selecting different tones users may activate different repeaters, choosing the one best suited to their location and communication needs. When a user activates a repeater by keying up on the appropriate input frequency and tone, their transmission is repeated only by that repeater. Other repeaters in the forest do not repeat transmissions from other repeaters. The input or repeater selection tone is not transmitted on the repeater output frequency, rather all repeaters transmit Tone 8 (103.5) on the output.

The nature of Bendix King radios used by the Forest Service is such that users may select a CTCSS tone by selecting a number on the radio's keypad. As a result, most users refer to the CTCSS tone by its number (e.g., "tone 9" instead of Pine Mountain or 100.0 Hz).


ANF Repeaters
Tone Location CTCSS Tone
1 Waterman Mountain 110.9
2 Santiago Peak 123.0
3 Mount Hawkins 131.8
4 Frost Peak 136.5
5 Not Assigned 146.2
6 Oat Mountain 156.7
7 Josephine Peak 167.9
8 Frasier Peak 103.5
9 Pine Mountain 100.0
10 Burnt Peak 107.2
11 Magic Mountain 114.8
12 Mount Lukens 127.3
13 Johnstone Peak 141.3
14 Grass Mountain 151.4

Cleveland National Forest (CNF - Forest #02)

Cleveland National Forest Channel Lineup
Channel Tone(s) Rx Tx Alpha Tag Description
11-12168.7500171.4250CNF F1 FNForest Repeater Net
2All excp. 1,6,8168.1500169.7250CNF F2 ANAdmin Repeater Net
32,5,10164.1250164.8250CNF F3 SNService Repeater Net
4168.6625168.6625CNF F4 PrjctR5 Project
5168.2000168.2000CNF F5 NIFC T2NIFC Tac 2
6166.5500166.5500CNF F6 R5 T4R5 Tac 4 Palomar Ranger District Initial Attack
7167.1125167.1125CNF F7 R5 T5R5 Tac 5 Trabuco Ranger District Initial Attack
8168.2375168.2375CNF F8 R5 T6R5 Tac 6 Descanso Ranger District Initial Attack
9151.1900151.1900CNF F9 CF LocCal Fire MVU Local Direct Tone 3 Rx Side
10151.3550159.3000CNF F10 CF C1Cal Fire Command 1
11151.2650159.3300CNF F11 CF C2Cal Fire Command 2
12151.3400159.3450CNF F12 CF C3Cal Fire Command 3 Tone 8 Rx Side
13151.2500151.2500CNF F13 CF T5Cal Fire Tac 5 Tone 16 Rx Side
14151.4600151.4600CNF F14 CF T12Cal Fire Tac 12 Tone 16 Rx Side
15151.4750151.4750CNF F15 CF T13Cal Fire Tac 13 Tone 16 Rx Side
16169.1125169.1125CNF F16 R5 AG 4 CNF (P)USFS Region 5 Air-Ground 4 Primary


CNF Repeaters
Tone Location CTCSS Tone
1 Sierra 110.9
2 Santiago Peak 123.0
3 Elsinore 131.8
4 High Point 136.5
5 Cuyumaca 146.2
6 Ortega 156.7
7 Los Pinos 167.9
8 Boucher 103.5
9 Lyons Peak 100.0
10 Portable Repeater 107.2
11 Black Mtn. 114.8
12 Sitton Peak 127.3

Sequoia National Forest (SQF - Forest #13)

Radio System


Sequoia National Forest Channel Lineup
Channel Tone(s) Rx Tx Alpha Tag Description
18168.6750168.6750SQF F1Emergency Net Direct
21-14167.67500170.5750SQF F2Emergency Repeater Net
38168.7750168.7750SQF F3Fire Net Direct
41-14168.7750170.6000SQF F4Fire Repeater Net
58168.1750168.1750SQF F5Admin Net Direct
6169.7250169.7250SQF F6BLM Central CA DIstrict Admin Net Direct
74,5,8169.7250165.450SQF F7BLM Central CA District Admin Repeater
8169.7750169.7750SQF F8BLM Central CA District Fire Net Direct
92-8169.7750163.0250SQF F9BLM Central CA District Fire Repeater Net


SQF Fire Repeaters
Tone Location CTCSS Tone
1 Delilah Lookout 110.9
2 Buckrock Lookout 123.0
3 Mule Peak Lookout 131.8
4 Baker Point 136.5
5 Oakflat 146.2
6 Piute BM 156.7
7 Chimney Peak 167.9
8 Jordan Peak Lookout 103.5
9 Sherman Peak 100.0
10 Tobias Peak 107.2
11 Breckenridge 114.8
12 Parkridge 127.3
13 Converse 141.3
14 Olancha 151.4

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