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.
... false ID papers for resistance members. In the end it had close contacts with the maquis.
Francs-Tireurs et Partisans[?] (Français) (FTP or FTPF) – Formed by ...