Difference between revisions of "United States Forest Service (CA)"
From The RadioReference Wiki
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Channel # Tone Rx Tx Description | Channel # Tone Rx Tx Description | ||
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1 8 168.6750 168.6750 SQF Direct | 1 8 168.6750 168.6750 SQF Direct | ||
Revision as of 14:17, 15 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
7/2008
Angeles National Forest (ANF)
Radio System
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.
When users transmit on one of the direct administrative channels their transmission can be received by any of the 14 repeater sites and relayed to dispatch, regardless of their location. On the other hand, if users transmit on one of the repeated administrative channels the CTCSS tone in use must match a repeater within range or their transmission will be lost.
| Tone | Location | CTCSS |
|---|---|---|
| 1 | Waterman Mtn. | 110.9 |
| 2 | Santiago Pk. | 123.0 |
| 3 | Mt. Hawkins | 131.8 |
| 4 | Frost Pk. | 136.5 |
| 5 | Table Mtn. | 146.2 |
| 6 | Oat Mtn. | 156.7 |
| 7 | Josephine Pk. | 167.9 |
| 8 | Frasier Pk. | 103.5 |
| 9 | Pine Mtn. | 100.0 |
| 10 | Burnt Pk. | 107.2 |
| 11 | Magic Mtn. | 114.8 |
| 12 | Mt. Lukens | 127.3 |
| 13 | Johnstone Pk. | 141.3 |
| 14 | Grass Mtn. | 151.4 |
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).