Cobb Island in Charles County, Maryland — The American Northeast (Mid-Atlantic)

Milestone in Radio History

Photographed by Rico Ramirez, July 25, 2024

1. Milestone in Radio History Marker

Inscription. Here on Cobb Island, in December 1900, Reginald Aubrey Fessenden, assisted by Frank W. Very, while experimenting in wireless telephony, for the first time sent and received intelligible speech by electromagnetic waves between two masts 50 feet high and one mile apart.

Erected 1969 by Maryland Historical Society.

Topics and series. This historical marker is listed in this topic list: Communications. In addition, it is included in the Maryland Historical Trust series list. A significant historical month for this entry is December 1900.

Location. 38° 15.645′ N, 76° 51.08′ W. Marker is on Cobb Island, Maryland, in Charles County. It is at the intersection of Cobb Island Road (SR 254) and Potomac River Drive on Cobb Island Road (SR 254). Touch for map. Marker is in this post office area: Cobb Island MD 20625, United States of America. Touch for directions.

Regionally, this marker is in the Washington Metropolitan Area

and in Southern Maryland.

It is also in the American South,

specifically in the Upper South,

in the Mid-Atlantic,

and in the Tidewater.

Globally, it is in the North Atlantic Region,

North America,

the Western Hemisphere,

the Western World,

and the Anglosphere.

Historically, it finds itself in what was once one of the original Thirteen Colonies

and also the Antebellum South.

Other nearby markers. At least 8 other markers are within 6 miles of this marker, measured as the crow flies: A different marker also named Milestone in Radio History (approx. ¼ mile away); a different marker also named Milestone in Radio History (approx. 0.3 miles away); a different marker also named Milestone in Radio History (approx. half a mile away); Old Chapel Bell (approx. 4.7 miles away); John Muse (approx. 5.8 miles away

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in Virginia); Stuffed Ham (approx. 6 miles away); Ways to Explore Southern Maryland's Scenic and Historic Routes (approx. 6 miles away); Discover Southern Maryland's Amazing Stories of Exploration, Hope, and Courage (approx. 6 miles away). Touch for a list and map of all markers in Cobb Island.

Photographed by Don Morfe, February 11, 2015

2. Milestone in Radio History Marker

Photographed by Don Morfe, February 11, 2015

3. Milestone in Radio History Marker

Milestone in Radio History Marker near the Potomac River image. Click for full size.

Photographed by Don Morfe, February 11, 2015

4. Milestone in Radio History Marker near the Potomac River

Sign at entrance to Cobb Island image. Click for full size.

Photographed by Don Morfe, February 11, 2015

5. Sign at entrance to Cobb Island

Photographed by Rico Ramirez, July 25, 2024

6. Milestone in Radio History Marker

Credits. This page was last revised on December 27, 2024. It was originally submitted on March 3, 2015, by Don Morfe of Baltimore, Maryland. This page has been viewed 745 times since then and 18 times this year. Photos: 1. submitted on July 25, 2024, by Rico Ramirez of Prince Frederick, Maryland. 2, 3, 4, 5. submitted on March 3, 2015, by Don Morfe of Baltimore, Maryland. 6. submitted on July 25, 2024, by Rico Ramirez of Prince Frederick, Maryland. • Bill Pfingsten was the editor who published this page.