1h - Opening of the monument to the inventor of radio A. Popov in Kronstadt. A ceremonial meeting with the participation of the inventor's daughter. 2h - A ceremonial meeting in the officers' club dedicated to the 50th anniversary of the radio. Reports. 3h - The laboratory where the radio was created. Popov's associate P. N. Rybkin talks about the experiments. 4h - Buildings of Leningrad associated with the life of AS Popov and the invention of radio: Leningrad University, Institute of Chemistry, Electrotechnical Institute, etc. Approx. : 1h. -80; 2h -75; 3h - no given. refined , according to old data 70 m; 4h -244 m.