FL Digi Net - For information go to NETS page


We welcome and encourage your input to this website.  If you have event information, articles, news items, photos or 'other'  you'd like to pass on to the membership, please submit it to us using the link below.  If accepted it will be added to our site promptly.

Send to:  4cs.comm@gmail.com

Here is an online turorial that will help you get a handle on FL Digi.  Thanks to the folks that created this learning aid.  This is how I am teaching myself to use NBEMS.  

dj, KJ6DJ


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

4C's Repeaters


  144-   145.110   -82.5

  220-    224.300  +82.5

  440-    444.275  +82.5 .

2020 Copyright © Contra Costa Communication Club  |   Privacy Policy

Before you buy a two way radio watch this video.  Many are talking about FRS and GMRS radio use in emergency and disaster service.  If you are a licensed amateur you need to know the legal issues associated with their use and how they effect you. This video may save you and your license from cancellation.


Contra Costa Communications Club

A Club Dedicated toService

The "Four C's" runs an open repeater 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 Used Equipment Sale!!

Dyna Jet 606 Tube Tester

MFJ-949D Antenna Tuner

Diamond MR-77/SMA Antenna

RS TRC-494 HT 40Ch.

​ICOM IC-W32A Dual Band HT

Radio Shack Trunking Scanner (2)

Radio Shack Trunking Scanner (HT)​​

Cash and carry from El Sobrante.  

Send offers to:


Rick has a very thorough and complete setup video.

When the need arises for amateurs and emergency responders to report, digital reporting of damages, accidents, medical incidents and other issues will require accurate reports.  Digital makes it happen.

First Wednesday FRS/GMRS/HAM

communication nets.  Commences with activation of Richmond alert sirens at 1100 Hrs.



​​West County EMCOMM

Net Control Roster 

Check-In List


Richmond Simulated EOC Radio Frequency Tests on the first Thursday of every month​

Time:  1030 - 1130 
Simplex Frequencies:
147.450, 441.000,  223.400