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.
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 | 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
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)
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
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
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
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 |
Wiki Links
- US Forest Service - Lake Tahoe Basin Mgmt Unit (CA/NV)
- US Forest Service - Lassen National Forest (CA)
Return to DB page: United States Forest Service (CA)
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