In a reflector antenna[?], the relative reduction in the effective aperture of the antenna caused by the masking effect of other antenna parts, such as a feed horn or a secondary reflector, which parts obstruct the radiation path.
... (UOP)
Romania
Departamentul de Informatii Externe[?] (DIE)
Directia de Informatii a Armatei[?] (DIA)
Foreign Intelligence Service[?] (SIE)
Guard and Protection ...