Folding structure for support of radio communication antenna, comprises vertical stub mast with bolted half shells to give azimuth and hub with bolted collar for elevation balanced by counter spring

摘要

The structure is carried by a stub mast (1) with bracing (31-36). Two bolted half shells (3,4) may be set to any required azimuth and one of the half shells is joined (5) to half of a bolted collar (6,7). The bolted collar grips a hub (10) attached (25) to an antenna (11) support arm (2) to allow controlled (12,13,14) elevation against a restraining spring (17) or complete folding. Protection is provided by an antenna shield (28).