info from an online 2020 document - mutual aid wildfire agreement between Ketchum and federals
all freqs match the Radio Reference Database - except -
Sawtooth National Forest - Tac 1 - 168.675 - Tac 2 - 168.6125
BLM (Twin Falls) - Tacs - Tac 1 - 172.775 - Tac 2 - 173.8625 - Tac 3 - 168.6375 - Tac 4 - 166.80 - (same freqs as other BLM units in Idaho but in a different order)
A/g - 168.5375 - (database shows 168.4375 which I suspect is a typo)
BLM Twin Falls also has SOA Rptr 167.15 R 163.175 in - same as the other BLM districts show in Idaho
Yup, I show Air-Ground 19 (168.1250) as the primary, Air-Ground 54 (168.
5375) as secondary and Air-Ground Idaho Department of Lands (151.1450) as tertiary for that dispatch zone. It is also listed as Air-Ground 54 (168.
5375) in the 2019 National Aviation Frequency Guide assigned to, among others, Idaho Zone 04, dispatched by the Shoshone center. It is also listed that way in an official 2020 document for that dispatch center.
The Sawtooth NF and the BLM Twin Falls District are dispatched by the South Central Interagency Dispatch Center located in Shoshone, Idaho.
The BLM code for the Twin Falls District is coded as ID-02. Unit identifiers should start with a "2" and will contain 4 digits. There is a net for 2 of the 3 field offices in the district. The Shoshone Field Office is on 168.8500/163.025, which will change to comply with the 2019 NTIA allocation. It will change when funding permits, as I expect is the reason it hasn't yet. The Burley Field Office (southern portion of the district) is on 168.5625/163.0750, with the same NTIA issue. I can't find which net the Jarbidge Field Office uses, the repeater maps I have don't show any repeaters in that Field Office. It covers some of the neatest terrain in the U.S., if you appreciate remoteness, running rivers and fantastic sightings of raptors (eagles, hawks, and many others).
The Sawtooth NF has two nets, north and south. The north is on 172.2500/164.4250 and south is on 171.5000/162.6125. Per nearly all listings the first number is the repeater output and after the slash is the repeater input. The Sawtooth has 4 ranger districts:
D1 Minidoka, south near the Nevada and Utah borders, with one unit of land in northern Utah.
D3 Ketchum, in the vicinity of the town of that name
D4 Sawtooth NRA
D5 Fairfield, borders the southeastern portion of the Boise National Forest.
Here is some additional info for aviation frequencies used by the South Central Interagency Dispatch Center.
National Air Guard (168.6250) and National Flight Following each have a remote base on Mt. Harrison. This dispatch center has a "local flight following repeater net on 170.1000/164.8000. There are 3 repeaters on this net: Bennett Mtn., Mt. Harrison and Big Peak. Per RR policy I'm not listing the repeater input CTCSS tones. Repeater output tones are not shown in the guide I have.
The South Central Idaho dispatch center also provides services to 3 National Park Service units, 1 Bureau of Reclamation unit, and a few U.S. Fish and Wildlife Service units. They also have the Eastern Idaho Area Office of the Idaho Department of Lands and the Idaho Department of Parks and Recreation units in the zone.