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United States Forest Service (CA)

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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
1 8 172.3750 172.3750 ANF FN1* Forest Net Direct
2 1-14 172.3750 169.9500 ANF FN2 Forest Net Repeat
3 8 164.9375 164.9375 ANF AN1* Admin Direct
4 1-14 164.9375 170.0750 ANF AN2 Admin Repeat
5 164.1250 164.1250 ANF SN1* Service Net Direct
6 3, 5, 14 164.1250 164.8250 ANF SN2 Service Net Repeat
7 168.0500 168.0500 N TAC 1 NIFC TAC 1
8 168.2000 168.2000 N TAC 2 NIFC TAC 2
9 168.6000 168.6000 N TAC 3 NIFC TAC 3
10 168.4875 168.4875 R5 A/G53 Region 5 Air to Ground 53
11 169.1125 169.1125 R5 A/G59 Region 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.

Repeaters

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).

Tones

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
1 1-12 168.7500 171.4250 CNF F1 FN Forest Repeater Net
2 All excp. 1,6,8 168.1500 169.7250 CNF F2 AN Admin Repeater Net
3 2,5,10 164.1250 164.8250 CNF F3 SN Service Repeater Net
4 168.6625 168.6625 CNF F4 Prjct R5 Project
5 168.2000 168.2000 CNF F5 NIFC T2 NIFC Tac 2
6 166.5500 166.5500 CNF F6 R5 T4 R5 Tac 4 Palomar Ranger District Initial Attack
7 167.1125 167.1125 CNF F7 R5 T5 R5 Tac 5 Trabuco Ranger District Initial Attack
8 168.2375 168.2375 CNF F8 R5 T6 R5 Tac 6 Descanso Ranger District Initial Attack
9 151.1900 151.1900 CNF F9 CF Loc Cal Fire MVU Local Direct Tone 3 Rx Side
10 151.3550 159.3000 CNF F10 CF C1 Cal Fire Command 1
11 151.2650 159.3300 CNF F11 CF C2 Cal Fire Command 2
12 151.3400 159.3450 CNF F12 CF C3 Cal Fire Command 3 Tone 8 Rx Side
13 151.2500 151.2500 CNF F13 CF T5 Cal Fire Tac 5 Tone 16 Rx Side
14 151.4600 151.4600 CNF F14 CF T12 Cal Fire Tac 12 Tone 16 Rx Side
15 151.4750 151.4750 CNF F15 CF T13 Cal Fire Tac 13 Tone 16 Rx Side
16 169.1125 169.1125 CNF F16 R5 AG 4 CNF (P) USFS Region 5 Air-Ground 4 Primary


Tones

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

Channels

Sequoia National Forest Channel Lineup
Channel Tone(s) Rx Tx Alpha Tag Description
1 8 168.6750 168.6750 SQF F1 Emergency Net Direct
2 1-14 167.67500 170.5750 SQF F2 Emergency Repeater Net
3 8 168.7750 168.7750 SQF F3 Fire Net Direct
4 1-14 168.7750 170.6000 SQF F4 Fire Repeater Net
5 8 168.1750 168.1750 SQF F5 Admin Net Direct
6 169.7250 169.7250 SQF F6 BLM Central CA DIstrict Admin Net Direct
7 4,5,8 169.7250 165.450 SQF F7 BLM Central CA District Admin Repeater
8 169.7750 169.7750 SQF F8 BLM Central CA District Fire Net Direct
9 2-8 169.7750 163.0250 SQF F9 BLM Central CA District Fire Repeater Net

Tones

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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