Compliance | Phases | Frequencies
Updated: 10 May 2023


All CARES members should review, understand, and load your radios with the frequencies that we use.

Operating Frequencies

Assignment Frequency Notes

Resource Net, Alt

147.570s, Tone, 151.4

TAC1, Simplex
Resource Net Alt2 147.570s, CT/TSQL, 151.4 TAC11, Simplex
Message Net 146.460s, Tone, 151.4 TAC2, Simplex
Resource Net 440.150+, Tone, 100.0 TAC3, W6TDM Repeater
Resource Net, Direct 440.150s, Tone, 100.0 TAC4, W6TDM output
Field Tactical 441.000s, CT/TSQL, 151.4 TAC5, Simplex
Field Tactical 147.585s, Tone, 151.4 TAC6, Simplex
Command Net 442.000+, Tone, 151.4 TAC7, WW6HP Repeater
Command Net Direct 442.000s, Tone, 151.4 TAC8, WW6HP Output

Packet Frequencies

Assignment Frequency Notes

Primary BBS

145.750, 223.620, 433.570   

Connect: W1XSC-1
Secondary BBS 145.690, 223.600, 433.550    Connect: W4XSC-1


CHIRP files

CHIRP is a free, open-source tool for programming your amateur radio; see the download page here. The following files are configured for Cupertino ARES operations. While frequencies are listed in a specific order, you can re-arrange them to suit your particular setup. Also, if you create a version for your favorite radio, please submit it for posting here.


Commercial Frequency Guard

During an activation, CARES Net Control Station (NCS) may request one or more net participants to listen to the following Emergency Alert System (EAS) Local Primary (LP) stations and other stations of interest to monitor for reports for five minutes, then return to this net and report on what was heard. Additionally, other Amateur Radio frequencies are also included as part of the Guard.

Station Frequency Purpose


740 KHz AM

LP1, National Primary EAS Station
KFRC 106.9 MHz FM LP1, National Primary EAS Station
KFBK 1530 KHz AM CA State Primary EAS Station


1670 KHz AM

City of Cupertino, local


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