A.S. Popov is the inventor of the wireless telegraph. For 18 years, A.S. Popov taught and was engaged in scientific activities in the Mine Officer Class (hereinafter – IOC) in Kronstadt, one of the best electrotechnical institutions in Russia at that time.
In 1895, he created a "device for detecting and recording electrical vibrations." On April 25 (May 7), 1895, the world's first public demonstration of radio communications took place at St. Petersburg University.
In 1899, Popov created a "telephone dispatch receiver" for the auditory reception of radio signals on headsets and patented it.
In 1900, the world's first radio transmission took place between the islands of Gogland and Kutsalo. The radio broadcast helped save the coastal defense battleship General Admiral Apraksin, which crashed off the island of Gogland.
During his lifetime, A.S. Popov was awarded many honorary titles and awards both in Russia and abroad for scientific research and their practical application.