Museum Directory


847 Orleans Rd
Chatham, MA 02650
Phone: (508) 945-8889

The mission of the Chatham Marconi Maritime Center (CMMC) is to engage, educate and inspire visitors of all ages and interests with the rich history of wireless communication on Cape Cod and the limitless future potential of science and technology to transform our lives.


This museum tells the story of Marconi, whose company built the station, and how the station's Morse code operators were able to communicate with ships across the world even a hundred years ago. And it tells the story of the secret role that the station played during WWII. You will also have a chance to practice Morse code and find out which is faster, Morse code or texting !

As you tour CMMC you will discover its "Untold Story".

Did you know?

In 1914, Guglielmo Marconi built a trans-Atlantic wireless station in Massachusetts. The receivers were here in Chatham and the transmitters were forty miles west, in Marion. The station was paired with a station in Norway to provide wireless communication between the two continents, using Morse code. Before operations could begin, the plan was interrupted by World War I.  After the war, the station was bought by RCA and, except during World War II, stayed in operation as a wireless maritime station for over seventy years.

During World War II, this was the site of the Navy’s top-secret “Station C”, which had the vital role of intercepting German U-Boats’ encrypted signals.

The museum’s exhibits feature the story of Marconi whose company built the station, how RCA’s Chatham Radio (call sign WCC) became the largest ship-to-shore station in the United States, the story of the secret role that the station played during WWII, and how your cell phone came to be.  You will also have a chance to practice Morse code and find out which is faster - Morse code or texting, encrypt your own Enigma messages, and try your hand at a drone flight simulator!

As you tour the Marconi-RCA Wireless Museum, you will discover its “Untold Story”.

Open for the Season!

Through June 14:

Monday- Closed
Tuesday- Closed
Wednesday - Closed
Thursday - Closed
Friday- 1:00 - 4:00 PM
Saturday*-10:30 AM - 4:30 PM
Sunday-1:00 - 4:00 PM
*Saturday June 2nd Only - Closed

Beginning June 15:

Monday*- Closed
Tuesday- 10:30 AM - 4:30 PM
Wednesday*-10:30 AM - 4:30 PM
Thursday-10:30 AM - 4:30 PM
Friday-10:30 AM - 4:30 PM
Saturday-10:30 AM - 4:30 PM
Sunday -1:00 - 4:00 PM

*Wednesday July 4th Only - Closed
*Monday July 30 and August 6 Only - Open 10:30 AM - 4:30 PM


2018 Admission - valid for day of purchase & for a second visit within 7 days.
Child                    12 & under            Free

Student                13 - 21               $ 5.00

Adult                     22 - 65              $ 10.00

Senior                   66 & over          $  7.50


Special Rates:

Members/Guest Passes                 Free

Teachers                                         Free

Active Military                                 $ 5.00

First Citizen Members                    $ 5.00

School Field Trips                        Students $7.00 and Chaperones Free


​*For information on Groups, call  508-945-8889 or E-mail info@ChathamMarconi,org


Plan to spend at least an hour at CMMC. When you first arrive, watch our introductory video: "Chatham Radio: WCC The Untold Story", narrated by Walter Cronkite. We have additional short videos that will enhance your visit -- each is about 10 minutes long (see our Exhibits page for their description).

Most of our exhibits have "touch screen" panels and audio to provide background information. You can send a message in Morse code at the interactive kiosk. Children will enjoy the scavenger hunt to identify items across the exhibit space.

Spend some time in the Museum Shop, browsing the wide selection of books, logo clothing and other it

Monday Closed
Tuesday Closed
Wednesday Closed
Thursday Closed
Friday 01:00 PM - 04:00 AM
Saturday 10:30 AM - 04:30 PM
Sunday 01:00 PM - 04:00 PM
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