MDARC provides a wide variety of programs and activities for its members. These include hosting and staffing our Campout and Field Day each June, PACIFICON (ARRL Pacific Division convention since 1920) each October, annual holiday party, public service events, great monthly meeting speakers, newsletter, ham radio classes, license testing, vehicle deployments, repeaters, ATV and weekly on the air nets.
Embedded Files
MDARC is an ARRL
Special Service Club
within the arrleb.org section
and within the pacific.arrl.org division.
ANNOUNCEMENTS
(See Announcements page for more.)
Radio By The Bay is July 18 in Alameda
californiahistoricalradio.com/event/radio-day-2026
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Upcoming License Testing
Friday, Aug 21, 2026 @ 5:30 PM
Our Savior's Lutheran Church
1035 Carol Lane, Lafayette
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MDARC Membership supports our voice & ATV repeaters (W6CX), Packet / APRS,
Education & Testing, Public Service, Activities and is
tax deductible.
Update Member Directory listings or Renew on the
Member Portal
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The Technician License Class
began June 16, 2026, eight weeks zoom & in-person
plus two Get On The Air (GOTA) classes in Clayton
Meets Tuesdays at 7:00 PM
Click here for details.
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New Technician Question Pool Took Effect July 1
On July 1, 2026, a new Element 2 Technician-class question pool took effect for examinations. VECs and VEs have new tests available for use at exam sessions. There were not too many changes. ExamTools (https://examtools.org) switched to the new pool.
Thank you to those that donated their ARRL Ver 5 manuals for the Technician class switching to Ver 6.
Stale announcements? Let the web team know with the URL.
See the pacificon.org site for details on the best ham radio convention in the western United States since 1920.
Register for Fri - Sun, Oct 16-18, 2026!
We hold hybrid meetings
In-Person and Zoom
We meet upstairs in Oak View 3. Park in the Upper Parking Lot. Testing is also upstairs. Ask anyone when you arrive.
See our COVID-19 statement.
Members are encouraged to
join the first Mon zoom
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Veterans radio Net Wed 6PM
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real time weather
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Thank you for joining us for Field Day.
It was held Sat & Sun, 27 & 28 June
MDARC is a 501(c)3 organization. We accept tax deductible club donations via PayPal.
Amateur Radio Event Support
MDARC can help provide Amateur Radio communications support for your event and assistance planning better event communications, event safety and event coordination. We can support all event areas including areas where cell phones do not work, SAG/Sweep Vehicles, Rest Stops, Water Stations, etc. Contact the public service coordinator listed on the Public Service page for assistance. We are operating and/or promoting approximately 42 events in 2025 throughout the region.
Join MDARC.groups.io to stay up to date with what's happening, meeting announcements, etc.
Communicating With You.
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Mount Diablo Amateur Radio Club
The Mount Diablo Amateur Radio Club (MDARC) was founded in 1947. Today it has a membership of approximately 300 dedicated hams and is one of the largest amateur radio clubs in California. MDARC's purpose is to encourage innovation in amateur radio, provide public service and educational opportunities, foster goodwill within our community, and have fun in the process.
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