Popov: The Russian Who Heard Thunder First On 7 May 1895 Alexander Popov showed a receiver built to register distant lightning - and remarked it could signal at a distance. This guide traces the storm recorder to the Russian navy's wireless rooms. Quick facts Inventor Alexander Popov Shown 7 May 1895 Built for thunderstorms First message 'Heinrich Hertz' Honoured Radio Day, 7 May Popov's sets went straight to sea, and by 1900 a Popov station helped rescue a wrecked battleship's crew - the first time wireless demonstrably saved lives. Priority belongs to many men; the sea trial belongs to him. Free tool and guides: Morse Code Works Morse Code Works - free Morse code tools and guides. Reference chart