News and Events


Use the links below to see two announcements of exciting new STEM After Hours offerings coming soon!

Click here for an announcement of our new Magnets and Motors class, for grade 3-5 students. Classes will be held on Saturday mornings from November 5 until December 10.

Click here for an announcement of our new Lego Robot Competition class, offered to students in grades 6-8. There will be twenty classes leding up to the competition. Classes will be held on Thursday afternoons from October 20 until March 30. Space is limited to the first 11 applicants.

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 with 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 Openings

Extended Fall Hours
Fridays 1-4 PM now through December 9

Occasional Fall Weekend Afternoons (Staffing Permitted)
Look for the "OPEN" flag, or call 508.945.8889 before visiting.

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.

Get your Ham Radio License at CMMC
CMMC is offering a complimentary three-day course to earn your Ham Radio License on November 25-27.


Click here for full details and registration information.

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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