News and Events

Click here to read about Chatham Station WCC's recent 95th Anniversary Event.

Saturday Secret Codebreaking Class

Hey kids, can you keep a secret?

(We'll show you how!)

Our popular Saturday Secret Codebreaking workshop for kids entering grades 4-9 is returning for another year. This hands-on activity will be held on eight Saturdays in July and August from 9:00 to 11:00 AM. The cost is a mere $25 which includes take-home materials for continuous fun and learning.

This activity was very popular last summer, and participation is limited to a small group, so please sign up early.

Click here for more information about this workshop.

Click here and scroll down to register.

Sign-up Now

CMMC is again pleased to announce our Summer Science Courses for kids entering grades 3-9. We are offering many one-week courses on a variety of topics including astronomy, marine environment, robotics, physics, chemistry, navigation, and movie making. The courses will be held at the STEM Education Center on our CMMC campus.

We are excited about this opportunity to engage our children during the summer and we hope you'll be able to take advantage of it. Space is limited so be sure to sign up early.

Click here for course descriptions and registration information.

May We Interest You In Volunteering?

For 2016, CMMC is again adding several new museum exhibits, expanding our STEM Education programs, and strengthening our business operations. We are most in need of expertise in website upgrades & social media expansion, writing for a new newsletter and print articles, and researching and restoring vintage electronics for planned future exhibits.

Among our many other volunteer opportunities are event coordination, museum tour guides (no experience needed - we'll train you!), teacher assistance in our Summer Science program, and coordination of the Summer Speaker Series. If you have a skill and a few hours a week, we have a need. Have fun and make new friends at CMMC! To read more about volunteering at CMMC, click here.

Your Invitation to Visit Us


Videos, activites, and interactive displays appeal to all ages including young students, Titanic buffs, Radio buffs and WWII vets. New and expanded exhibits are here!

We are located at 847 Orleans Rd (Route 28) in Chatham MA 02633.

Click here for our museum schedule & map

To Members and Friends:
We have been able to build CMMC with the ongoing support of our members and friends. Membership opportunities continue: Become a Member of CMMC and enjoy the benefit of admissions, plus special member events.
See our Join Us -> Membership page for more information.

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Guglielmo Marconi
Guglielmo Marconi
This website opens the door to the Chatham Marconi Maritime Center (CMMC), where visitors of all ages can learn, interact and value the rich history of wireless communications on Cape Cod. You are invited to join us at CMMC for a better understanding of how communications science and technology have changed our lives. (See hours below.)

Marconi-RCA Wireless Museum - Summer Hours through September 3

Tuesday - Saturday 10:30AM - 4:30PM
Sunday 1:00 - 4:00PM
Closed Mondays

Fall Hours September 4 through October 9

Wednesday - Sunday 1:00PM - 4:00PM

Please see the Visit Us page or our Calendar of Events for dates and times of all museum openings and special events.

The public is always invited to walk the grounds of the Marconi-RCA National Register District and experience the outdoor Antenna Field Trail exhibit at any time.

Plan to Attend These Entertaining & Informative Thursday Evening Presentations...

August 18 at 6:00 and 8:00PM
Dr. Roger Denk: TICOM, the last secret mission of World War II

August 25 at 6:00 and 8:00PM
Capt. Bob Ryder: Voyages From Chatham: More Pictures and Stories

September 1 at 6:00 and 8:00PM
Filmmaker Chris Seufert: Cape Cod by Drone

Click here for more information and to reserve your seats.

Held Over... CMMC Tells Chatham's World War II Story

Chatham’s top-secret role in defeating Germany during World War II came alive in 2015 as we remembered the 70th anniversary of the war’s end.

Stalking the U-Boats: Chatham Radio 1942-1945 was the theme for special exhibits. The museum remembered The Navy’s "Station C” which located marauding German U-Boats and intercepted their Enigma-encrypted radio messages, which was a key to winning The Battle Of The Atlantic.

Continuing this year, an interactive display features both a real German Enigma-cypher machine and two electronic Enigma simulators, which allow visitors to encrypt and decipher their own messages. The Enigma featured prominently in last year’s Oscar-nominated The Imitation Game.

Other interactive exhibits, including learning Morse code and tracing a ship-to-shore telegram through all of its steps, fill the museum, which traces 100 years of wireless communications.

Chatham Navy Radio played a significant role in defeating the Germans during the World War II Battle of the Atlantic by intercepting Enigma-encrypted wireless messages between German headquarters and its ships at sea, passing the intercepts on to Washington, DC for decoding. In addition, as the control station for the east-coast direction-finding network, Station C directed the search for telltale radio signals that allowed enemy vessels to be located and tracked.

CMMC video introduction to The Imitation Game
This video is a production of the Chatham Marconi Maritime Center (c) 2015. Embedded Enigma video clip is used with permission of Tom Perera, PhD founder of the Enigma Museum.

CMMC WWII video features the Battle of the Atlantic.

To see more about the video's creator, Ed Fouhy, and its background, click here to view the article published in the Cape Cod Chronicle (c) 2011, used with permission.
The Marconi-RCA National Register District is a 13 acre site that complements the modest, finely crafted buildings, built in 1914, common in the early 20th century. Full exterior Historic Restoration of all 10 buildings on the site had been completed by the Town of Chatham in 2008. Interior renovations, including full ADA compliance, were completed by CMMC, in the Operating Building, ("Marconi-RCA Wireless Museum") in 2010 and the former Hotel Nautilus ("Education Center") in 2014, Recent exterior renovations by the Town of Chatham added ADA access and landscaping. Click on this link for a short history of the campus.

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