The City of Costa Mesa Emergency Service Amateur Communications organization (known as MESAC), is comprised of licensed amateur radio operators dedicated to serving the community and the public in the event of emergencies and disasters. Members also frequently participate in non-emergency city and community activities where portable communications capabilities are necessary.


Costa Mesa Police Chief Rob Sharpnack visits MESAC booth at National Night Out on August 4, 2015.

New to Ham Radio?

If you are new to Ham Radio please come to one of our meetings and we’ll help you to learn about the hobby and how to obtain your FCC Amateur Radio License. The ARRL (Amateur Radio Relay League) is a valuable resource to learn about Ham Radio. Visit their introductory page to learn about our great hobby.

There are other great resources for learning about Ham Radio and licensing. Here are some web resources: