Telefunken Variometer, Used at Tuckerton Wireless Station, 1912-1916

This radio equipment was used at the German-built Tuckerton Wireless Station in New Jersey. A powerful 820-foot antenna communicated with an identical station in Germany. National security concerns during WWI led to the seizure of Tuckerton by the U.S. government in 1917. It is cited to be the origin of information leaks leading to the RMS Lusitania disaster through U-boat attack.