History of Science and Engineering Annotation << Back A.M. TSEBIEV AND ITS ROLE IN THE DISCOVERY OF NUMBER 24. TO THE 60th ANNIVERSARY OF THE OPENING A.V. Yakubov A group of Soviet scientists, A.M. Tsebiev, A.S. Tagerom, A.I. Melnikov and G.P. Kobelkov, in 1959, a discovery was made of the generation of microwave oscillations by a semiconductor diode with one p – n junction at a negative voltage. The discovery had a serious impact on the scientific and technological revolution in this direction, led to the creation of new devices and devices, their introduction into the industry. The role of the team of authors is ambiguous. Candidate of Technical Sciences A.S. Tager played a major role in the opening design at that time. Authorship in the discovery of the phenomenon was different. A.S. Tager according to many data can not claim to be the first in the detection of the phenomenon. Contact the author of the article with two co-authors of the discovery allowed us to obtain material for analysis. The article discusses their letters and some documents received from various sources, an analysis is carried out that allows you to make a version of the discovery. The priority of the role of A.M. Tsebieva. Keywords: discovery; impact avalanche and transit-time diod; discoveries and inventions of A.M. Tsebiev; a wireless computer network. DOI: 10.25791/intstg.03.2019.513 Contacts: E-mail: ayakubov@mail.ru Pp. 30-39.