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Santa Clara County ARES®/RACES

State and Region Frequencies

The following frequencies can be used to communicate between the Santa Clara County EOC and other Bay Area OAs.

Alameda (Primary)
Repeater
WB6ECE
Frequency
441.300+ PL 100
Location
Multi-site
SCV Section Net
Alameda VHF (Calling)
Repeater
W6RGG
Frequency
147.240+ PL 107.2
Location
San Leandro
AUXCOM
Alameda UHF (Calling)
Repeater
W6RGG
Frequency
147.240+ PL 107.2
Location
San Leandro
AUXCOM
Contra Costa (Calling)
Repeater
WA6HAM
Frequency
145.490- PL 107.2
Location
Orinda
Contra Costa (Calling)
Repeater
WA6HAM
Frequency
445.625+ PL 79.7
Location
Orinda
Marin
Repeater
TBD
Monterey (Primary)
Repeater
WB6ECE
Frequency
441.300+ PL 100
Location
Multi-site
SCV Section Net
Napa North VHF
Frequency
146.820+ PL 151.4
Napa South VHF
Frequency
146.820+ PL 100
San Benito (Primary)
Repeater
WB6ECE
Frequency
441.300+ PL 100
Location
Multi-site
SCV Section Net
San Benito ARC
Frequency
147.315+ PL 94.8
Location
Multi-site
San Francisco
Repeater
TBD
San Mateo (Bay-side) (Primary)
Repeater
WB6ECE
Frequency
441.300+ PL 100
Location
Multi-site
SCV Section Net
San Mateo (Bay-side) (Calling)
Repeater
KC6ULT
Frequency
146.865- PL 114.8
Location
Skyline Blvd, San Mateo
San Mateo EOC RACES
San Mateo (Coast-side)
Repeater
TBD
Santa Clara (Primary)
Repeater
WB6ECE
Frequency
441.300+ PL 100
Location
Multi-site
SCV Section Net
Santa Clara (Calling)
Repeater
K6SNY
Frequency
443.275+ PL 107.2
Location
Crystal Peak
SCC Resource Net South
Santa Clara (Calling)
Repeater
W6GGF
Frequency
442.500+ PL 100
Location
Crystal Peak
SCCo Command Net
Santa Clara (Calling)
Repeater
W6TI
Frequency
147.360+ PL 110.9
Location
Black Mountain
SCCo Message Net
Santa Cruz (Primary)
Repeater
WB6ECE
Frequency
441.300+ PL 100
Location
Multi-site
SCV Section Net
Solano ACS
Frequency
441.050- PL 77.0
ACS
Sonoma EOC Tactical
Frequency
146.730- PL 88.5
EOC Tactical
Sonoma Command 1
Frequency
224.820- PL 103.5
Command 1
Sonoma Command 2
Frequency
223.760- PL 88.5
Command 2
CountyUse [1]RepeaterFrequencyTX ToneLocationNotes
Alameda Primary WB6ECE 441.300+ 100.0 Multi-site SCV Section Net
Alameda Calling W6RGG 147.240+ 107.2 San Leandro AUXCOM
Alameda Calling W6RGG 444.200+ 107.2 San Leandro AUXCOM
Contra Costa Calling WA6HAM 145.490- 107.2 Orinda
Contra Costa Calling WA6HAM 445.625+ 79.7 Orinda
Marin TBD
Monterey Primary WB6ECE 441.300+ 100.0 Multi-site SCV Section Net
Napa Calling 145.820+ 151.4
Napa Calling 145.820+ 100
San Benito Primary WB6ECE 441.300+ 100.0 Multi-site SCV Section Net
San Benito Calling 147.315+ 94.8 Multi-site
San Francisco TBD
San Mateo (Bay-side) Primary WB6ECE 441.300+ 100.0 Multi-site SCV Section Net
San Mateo (Bay-side) Calling KC6ULT 146.865- 114.8 Skyline Blvd, San Mateo San Mateo EOC RACES
San Mateo (Coast-side) TBD
Santa Clara Primary WB6ECE 441.300+ 100.0 Multi-site SCV Section Net
Santa Clara Primary K6SNY 443.275+ 107.2 Crystal Peak SCC Resource Net South
Santa Clara Calling W6GGF 442.500+ 100.0 Crystal Peak SCCo Command Net
Santa Clara Calling W6TI 147.360+ 110.9 Black Mountain SCCo Message Net
Santa Cruz Primary WB6ECE 441.300+ 100.0 Multi-site SCV Section Net
Solano Calling 441.150+ 77.0 ACS
Sonoma Calling 146.730 88.5 EOC Tactical
Sonoma Calling 224.820- 103.5 Command 1
Sonoma Calling 223.760- 88.5 Command 2
Note [1]:
Primary/Secondary: Used for inter-county communications. Not for in-county use while inter-county nets are active.
Calling: A frequency/repeater used primarily for another in-county purpose, but can be used to reach the county if the county is not currently listening on an inter-county frequency. Make contact on the calling frequency, then move to an inter-county frequency.
Note [2]:
Not verified.

Santa Clara County EOC

To contact the Santa Clara County EOC when ARES/RACES in the county has been activated:

If the section-wide net is active
The Santa Clara County EOC radio operators will monitor the section-wide net on WB6ECE.
If the section-wide net is not active
Other EOCs can reach the SCCo EOC on the SCCo Command Net
Primary = W6GGF (UHF) (Crystal Peak): 442.500+ PL 100
Alternate = K6SNY (Crystal Peak): 443.275+ PL 107.2

Santa Clara Valley Section

The ARRL Santa Clara Valley Section includes the following Operational Areas: Monterey County, San Benito County, Santa Clara County, Santa Cruz County, and San Mateo County. During emergencies and/or disasters, the Santa Clara County EOC can use these systems to contact other OAs in the Santa Clara Valley Section.

Primary: WB6ECE
The WB6ECE repeater system is a network of UHF repeaters designed to cover the Santa Clara Valley Section. It is a simulcast system, where users operate on a single frequency, regardless of location. The system selects the best received signal from all sites and then transmits out from all sites at once.
WB6ECE System: 441.300+ PL 100 (do not use tone squelch)
Alternate: WR6ABD
The WR6ABD repeater on Loma Prieta has been used in the past for NTS traffic.
WR6ABD (Loma Prieta) 146.640- PL 162.2

California Emergency Services Net (HF)

The California Auxiliary Communications Service (ACS) operates the California Emergency Services Net (CESN) for statewide HF communications. During emergencies and/or disasters, the Santa Clara County EOC can use this net to contact other OAs throughout the State.

Daytime
Primary
7.192 MHz LSB
Secondary
7.230 MHz LSB
Verified With
Weekly CESN Nets
Nighttime
Primary
3.992 MHz LSB
Secondary
3.960 MHz LSB
Alternate
1.987 MHz LSB
TimePrimarySecondaryAlternateVerified With
Daytime 7.192 MHz LSB 7.230 MHz LSB Weekly CESN Nets
Nighttime 3.992 MHz LSB 3.960 MHz LSB 1.987 MHz LSB

The Santa Clara County EOC does monitor SHARES HF when activated but does not monitor other HF frequencies. Contact Santa Clara County on other communication paths to arrange a contact. The county EOC has 80-10m capability.

California Emergency Services Radio System (CESRS)

The California Office of Emergency Services (Cal OES) operates the California Emergency Services Radio System (CESRS) for statewide VHF communications. The acronym CESRS is typically pronounced “Caesars.” The system operates under FCC Part 90 (not amateur radio) and consists of a series of repeaters, some of which are linked via microwave. Different PL tones are used to access different repeaters. During emergencies and/or disasters, the Santa Clara County EOC can use this system to contact other OAs and resources throughout the State.

CESRS Frequencies and Tones
CA State Ops Ctr (SOC) and OAs to the Northeast
Radio Preset
[Frequency][3]
Tone
6
Repeater Location
Mt. Diablo
Verified With
SOC
OAs to the South and for microwave network access
Radio Preset
[Frequency][1]
Tone
1
Repeater Location
Loma Prieta
OAs to the North
Radio Preset
[Frequency][2]
Tone
3
Repeater Location
Mt. Tamalpais
CESRS Frequencies and Tones
DestinationRadio PresetToneRepeater LocationVerified With
CA State Ops Ctr (SOC) and OAs to the Northeast [Frequency][3] 6 Mt. Diablo SOC
OAs to the South and for microwave network access [Frequency][1] 1 Loma Prieta
OAs to the North [Frequency][2] 3 Mt. Tamalpais
To make a call:
Select the correct preset, press PTT, wait 1 second, then say: “[destination], this is Santa Clara County on CESRS tone [#].”
To answer a call:
Listen to the tone number that the caller says, select the preset corresponding to that tone (see above table), press PTT, wait 1 second, then respond.
To contact the Santa Clara County EOC:
When ARES/RACES in Santa Clara County has been activated, the amateur radio operators at the county EOC normally monitor CESRS full time.

Shared Resources HF Radio Program (SHARES)

The Department of Homeland Security (DHS) Cybersecurity & Infrastructure Security Agency (CISA) manages the SHARES program. It is not part of amateur radio, although amateur radio operational experience can be useful. The Santa Clara County Office of Emergency Management utilizes SHARES to communicate with the region and state. Frequency and operational information is confidential.