Abstract: A compact, foldable tripod structure is self contained and mounts an antenna reflector. The structure comprises an assemblage of structural members which are long and slender, arranged to be folded into a compact configuration for storage or transport, and adapted to be rapidly unfolded at a desired site to produce an antenna support structure having great rigidity. The geometry of the structure is designed so that most components are in tension or compression, thereby resulting in a high strength/deflection-to-weight ratio which renders the structure inherently stable. Components are permanently attached to the structure and rapid erection may be completed manually.