Difference between revisions of "United States Forest Service (CA)"
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Revision as of 18:16, 20 April 2011
Contents
Sequoia National Forest (SQF)
Radio System
| Channel # | Tone | Rx | Tx | Description |
|---|---|---|---|---|
| 1 | 8 | 168.6750 | 168.6750 | SQF Direct |
| 2 | 1,2,12(3) | 168.6750 | 170.5750 | SQF Repeated |
| 3 | 8 | 168.7750 | 168.7750 | SQF Fire Direct |
| 4 | 1,2,12(3) | 168.7750 | 170.6000 | SQF Fire Repeated |
| 5 | 8 | 168.1750 | 168.1750 | SQF Admin |
| 6 | 8 | 164.7500 | 164.2500 | NPS Front Country |
| 7 | 8 | 171.7500 | 172.5000 | NPS Backcountry |
| 8 | 8 | 171.4750 | 169.8750 | SNF Admin |
| 9 | 8 | 172.2250 | 169.9250 | SNF Fire |
| 10 | 8 | 163.7125 | 163.7125 | Share Net |
| 11 | 8 | 164.1500 | 164.1500 | R5 Project Net |
| 12 | 8 | 170.0000 | 170.0000 | R5 Air-Ground |
| 13 | 8 | 168.0500 | 168.0500 | NIFC Tac 1 |
| 14 | 8 | 168.2000 | 168.2000 | NIFC Tac 2 |
Angeles National Forest (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 | Table Mountain | 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 |
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 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).
Channel Lineup
Most radios on the forest have the first 8 frequencies in common. The first four channels, ANF F1 through ANF F4, are the dispatch frequencies, the next three are NIFC tactical channels 1 through 3, and the 8th is USFS Region 5 Air-to-Ground. Each ranger district, and crews within each ranger district, have different channel lineups after the 8 common frequencies. The variations between ranger districts and crews on channels 9 through 16 involve frequencies belonging to other agencies such as Los Angeles County Fire, San Bernardino County Fire, the California Emergency Management Agency, and the Bureau of Land Management, as well as frequencies of adjacent National Forests.
ANF F1 and ANF F2 are called "Forest Net" and are used primarily for fire and emergency traffic. ANF F3 and ANF F4 are called "Admin" and are used for routine communications. The odd numbered channels, ANF F1 and ANF F3, are simplex frequencies and the even numbered channels, ANF F2 and ANF F4, are repeated.
When users transmit on ANF F1 or ANF F3 using tone 8 (103.5 Hz) their transmission can be received by dispatch through antennas at any of the 14 repeater sites. On the other hand, if users transmit on ANF F2 or ANF F4 the tone in use must match a repeater within range or their transmission will not be heard.
Intra-crew and tactical communications on the Angeles NF take place on several frequencies depending on the ranger district and crew. Fire crews primarily use NIFC TAC 2 for intracrew communications, and NIFC TAC 1 or 3 if TAC 2 is busy.
| Channel | Tone(s) | Rx | Tx | Alpha Tag | Description |
| 1 | 8 | 172.3750 | 172.3750 | ANF F1 | Forest Net Direct |
| 2 | 1-14 | 172.3750 | 169.9500 | ANF F2 | Forest Net Repeat |
| 3 | 8 | 164.9375 | 164.9375 | ANF F3 | Admin Direct |
| 4 | 1-14 | 164.9375 | 170.0750 | ANF F4 | Admin Repeat |
| 5 | 168.0500 | 168.0500 | TAC 1 | NIFC TAC 1 | |
| 6 | 168.2000 | 168.2000 | TAC 2 | NIFC TAC 2 | |
| 7 | 168.6000 | 168.6000 | TAC 3 | NIFC TAC 3 | |
| 8 | 170.0000 | 170.0000 | R5 A/GR | Region 5 Air-to-Ground | |
| 9 | 169.0875 | 169.0875 | SOPS A/G | R5 Southern Operations Air-to-Ground | |
| 10 | 1-14 | 168.7500 | 171.4250 | CNF F2 | Cleveland NF Admin Repeat |
| 11 | 1-14 | 170.5500 | 169.9000 | LPF F2 | Los Padres NF Admin Repeat |
| 12 | 154.3400 | 154.3400 | LAC T18 | Los Angeles County Fire TAC 18 | |
| 13 | 154.4000 | 154.4000 | LAC T19 | Los Angeles County Fire TAC 19 | |
| 14 | 14 | 154.0700 | 154.0700 | LAC T21 | Los Angeles County Fire TAC 21 |
| 15 | 154.3700 | 154.3700 | VERDUGO | Verdugo Fire Authority Red 1 | |
| 16 | 155.1600 | 155.1600 | MRA S R | Sierra Madre Search and Rescue |