The product is an original  VERY RARE antique photograph from 1907 of Lee de Forest's radiotelephone that was tested on the US Navy's Great White Fleet. Measuring 4 x 5 inches with a black and white image, this original gelatin-silver print features a landscape orientation and a white border. The photograph captures a significant moment in the history of telecommunications, showcasing the early use of radiotelephones in the early 20th century. A unique and historic piece for collectors interested in military technology and telecommunications advancements. The test failed because of interference, short range and mechanically unreliablilty and the US Navy ripped all of these radiotelephones out of their ships shortly after the tests.