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Contra Costa Communications Club

A Club Dedicated toService

The "Four C's" operates open repeaters located in San Pablo, CA. It is not unusual to get stations checking in from as far east as the Sierras, up north well into Sonoma County and decent coverage throughout San Francisco and the North Bay​​


4C's Repeaters


  144-   145.110   -82.5

  220-    224.300  -82.5

  440-    444.275  +82.5 .

      Packet Information
Network Node =
Keyboard to Keyboard

KBOX= Box for messages or  



Frequency = 145.050 

Your membership helps keep our repeaters maintained and operating.  Please make a donation to guarantee continuous service.  Join NOW!

You may also donate to our repeater operation fund at the same address.  Thank you