Sea tests of primal national systems of radio detection and their tactical deployment in defense of sevastopol 1941–1942 (to 65 anniversary of victory)

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.