XTUGA U777 Wireless Microphone System, Dual Wireless Dynamic

u777Datenblatt: Unterseeboot U 777; Typ: VII C: Bauauftrag: 20.01.1941 Bauwerft: Kriegsmarinewerft, Wilhelmshaven : Baunummer: 160 Serie: U 751 - U 782 Kiellegung: 05.06.1943German submarine U777 was a German Type VIIC Uboat built in World War II, launched on 25 March 1944, and commissioned on 9 May, by its sole commander,