title: Sea tests of primal national systems of radio detection and their tactical deployment in defense of sevastopol 1941–1942 (to 65 anniversary of victory)
abstract: Data of sea tests of the first systems of radio detection in September-November of 1939 in the Black Sea near Sevastopol are presented and report on their tactical deployment on the basis of memoirs of a defender of Sevastopol, commanding officer of air defense battery, Ye. A. Ignatovich (22.10.1916-23.08.2000) is submitted. Short summary about the author of memoirs is given.