ARES · RACES · EmComm Frequencies by County
Emergency Freq's
by Region
County-by-county ARES and RACES primary frequencies for Southern California. These are emergency communication frequencies only — not casual operating channels. For everyday repeaters see the Frequencies section.
These are EmComm frequencies. Monitor before transmitting. During a disaster, listen first — check in only when you have something useful to report or when net control asks for check-ins.
Los Angeles County — EmComm Frequencies
Primary
LA COUNTY · DCS/RACES
145.300
LA County DCS — Primary
LA County Disaster Communications Service (RACES). Primary EmComm net Mondays 7 PM. DCS tone encoded.
Offset: − · DCS Encoded
RACES Alt
147.270
LA RACES — Alternate
LA County RACES alternate frequency. Used during county emergency operations when primary is congested.
Offset: + · PL: 179.9
ARES
DARN System
DARN — ARES LAX
LA division ARES net on the DARN linked system. Hospital affiliated. LAX ARES Monday 9 PM net.
Simplex Fallback
146.520
National 2m Emergency Simplex
If all repeaters fail — this is the universal LA Basin fallback. Every ham in LA should have this as channel 1.
No PL — Simplex
LA County HF Emergency
HF Night
3.992 LSB
CA EmComm Net — Night
California Emergency Services Net — nighttime. Connects statewide when VHF/UHF infrastructure is down.
80 Meters · LSB · Night
HF Day
7.192 LSB
CA EmComm Net — Day
California Emergency Services Net — daytime. 40m provides excellent statewide coverage during daylight hours.
40 Meters · LSB · Day
Resources
Orange County — EmComm Frequencies
Primary
OC ARES · W4MCO ANALOG
443.050
OC ARES — W4MCO Primary
Orange County ARES primary analog repeater. Downtown OC site. Primary for OC emergency coordination.
Offset: +5.00 · PL: 103.5
Primary Linked
OC ARES · W4MCO LINKED
146.730
OC ARES — W4MCO 2m Link
Linked to 443.525 and 444.125 for county-wide OC coverage. Note: different PL from Palomar W6NWG machine.
Offset: −0.600 · PL: 103.5
OC RACES
146.895
OC RACES/ACS Net
Official OC RACES net — Mondays 7 PM. Emergency coordinators check in. Official county EmComm net.
Offset: − · PL: 136.5
HF
3.965 LSB
OC ARES HF Net
Orange County ARES public service HF net. 80 meters, LSB — for when VHF repeaters are unavailable.
80 Meters · LSB
Resources
San Diego County — EmComm Frequencies
Primary
SAN DIEGO · PARC EMCOMM
146.730
Palomar Mtn — W6NWG
Highly reliable high-site EmComm primary for SD County. Generator backed. Most ARES activations start here.
Offset: − · PL: 107.2
ARES Linked
147.060
SD ARES — Linked Primary
SD ARES EC Net primary. Linked to 449.260 − and 449.440 − (both PL 107.2) for full county coverage.
Offset: + · PL: 107.2
ARES Link 2
449.260
SD ARES — UHF Link
Part of the SD ARES three-site linked system. Same PL as 147.060 and 449.440.
Offset: − · PL: 107.2
ARES Link 3
449.440
SD ARES — Otay Mtn
Otay Mountain site. South SD county coverage. Linked to 147.060 and 449.260.
Offset: − · PL: 107.2
Imperial County
147.150
Mt. Laguna — Imperial ARES
Primary for Imperial Valley and eastern San Diego County ARES operations.
Offset: + · PL: 107.2
HF
3.913 LSB
SD ARES HF Net
ARES Southern District HF Net. San Diego Section. 80 meters LSB — statewide reach when VHF/UHF is down.
80 Meters · LSB
Resources
Inland Empire — EmComm Frequencies
Primary
INLAND EMPIRE · KPRA FLAGSHIP
146.385
Keller Peak — KE6TZG (KPRA)
Official IE Emergency Communication Repeater. Wide coverage: IE, LA, OC, parts of SD. IRLP #3216. Primary for all IE ARES nets.
Offset: + · PL: 146.2
HF — SB County
3.987 LSB
San Bernardino County RACES HF
SB County RACES primary HF net. Connects IE, High Desert, and mountain communities county-wide.
80 Meters · LSB
HF — Riverside County
3.945 LSB
Riverside County RACES/ARES HF
Riverside County coordinated HF emergency net. Join if you're in the Riverside County area.
80 Meters · LSB
Keller Peak EmComm Net Schedule
| Net | Time | Schedule |
|---|---|---|
| Hospital Net | 7:00 PM | First Monday / month |
| SB County Fire EmComm | 7:30 PM | First Monday / month |
| NTS Traffic Net (SCN/V) | 9:00 PM | Mon / Wed / Fri |
| SATERN | 8:00 PM | Sunday nights |
| EmComm Hub on Keller | 8:00 PM | Sunday nights |
Resources
Ventura County — EmComm Frequencies
County Primary
VENTURA COUNTY · ACS/ARES
145.200
Sulphur Mtn — WD6EBY
Ventura County ACS/ARES county-wide primary. Covers all 8 VC areas from Sulphur Mountain. First stop for any VC emergency.
Offset: − · PL: 127.3
Area 1
146.805
Simi Valley — K6ERN
Ventura County Area 1 EmComm repeater covering Simi Valley.
Offset: − · PL: 100.0
Area 4
146.970
Oxnard — WB6YQN
Ventura County Area 4 EmComm repeater covering Oxnard and the coastal area.
Offset: − · PL: 127.3
UHF County-Wide
445.560
Sulphur Mtn UHF — WD6EBY
Ventura County 70cm county-wide EmComm machine. Backup to 145.200 when 2m is congested.
Offset: − · PL: 141.3
Resources
Santa Barbara County — EmComm Frequencies
WIN Node
SANTA BARBARA · WIN SYSTEM
448.900
Santa Ynez Peak — K6JSI
WIN System node at Santa Ynez Peak. Wide SB county coverage, into Ventura County. AllStar Node 1360. Open system.
Offset: − · PL: 123.0
HF
3.867 LSB
SB Section ARES HF Net
Santa Barbara Section ARES HF emergency net. 80 meters, LSB mode. Statewide reach when VHF infrastructure fails.
80 Meters · LSB
Resources
High Desert — EmComm Frequencies
Simplex — Critical
146.520
National 2m Emergency Simplex
In High Desert areas with limited repeater infrastructure, simplex is especially critical. Must be channel 1 in every radio.
No PL — Simplex
HF — SB County
3.987 LSB
San Bernardino County RACES HF
SB County RACES HF net covering High Desert under the San Bernardino County system.
80 Meters · LSB
For current High Desert ARES/RACES repeater assignments, contact San Bernardino County RACES directly and check RepeaterBook.com filtered to San Bernardino County for the most up-to-date local machines.
Coachella Valley — EmComm Frequencies
Primary
COACHELLA VALLEY
146.760
Coachella Valley — Primary
Primary local EmComm repeater for Coachella Valley communities — Palm Springs, Indio, Cathedral City, and surrounding desert areas.
Offset: − · PL: 107.2
Wide Area Backup
146.385
Keller Peak — Wide Area
From the valley floor with a good antenna, Keller Peak is often reachable and links to the full IE EmComm system.
Offset: + · PL: 146.2
HF
3.945 LSB
Riverside County RACES/ARES HF
Riverside County RACES HF net — the Coachella Valley falls under Riverside County's ARES/RACES organization.
80 Meters · LSB
For the full Coachella Valley and Riverside County ARES frequency list and EC contact, visit arrl.org/ares and search for the Riverside County ARES group.