Feature:Can Be FoldedOnly Antenna Signal Booster.Enhance The Remote Antenna Receiving Signal Strength.Antenna Booster Is Directed.With Aluminum Foil Facing The Aircraft Will Have Effect.Material:PlasticWeight : 1Pcs about 60 g Only antenna signal boosterThis is an idealized radar antenna and produces a pencil beam. If the reflector has an elliptical shape， then it will produce a fan-shaped beam. Surveillance radar used within the horizontal and vertical planes of the two different curvaturesIn order to achieve the required pencil beam in azimuth and in elevation classical cosecant squared fan beam.