Abstract: A rotatable holder with position memory particularly useful for restoring a memorized orientation for a support rod for an article. The holder has a fixed part and a rotatable part rotatable on the fixed part. First gearing on the rear of the rotary part meshes with second gearing on the front of the fixed part when a securing bolt moves them together, preventing rotation of the rotary part. Lossening of the securing bolt frees the rotary part to rotate. The rotary part includes a rearwardly extending protrusion with its internally gear toothed. A memory ring disposed inside that protrusion and has peripheral gearing which meshes with the gearing in the protrusion, so that the memory ring rotates with the rotary part. The memory ring is biased by a spring rearwardly along the protrusion to disengage the memory ring from the gear toothing when the securing bolt is loosened, which would enable free adjustment of the rotary part with respect to the fixed part.

Abstract: The antenna mounting apparatus includes an equipment frame and a reflector mounting apparatus. The reflector mounting apparatus has both an elevation control and an azimuth control incorporated therein such that the apparatus has both strength and low weight.

Abstract: An adjustable angle mount particularly useful for removably supporting a police radar detector horizontally to the inside of any of a variety of vehicle windshields of various inclination angles. The mount has a pair of planar members hinged together at a horizontal axis, one member being attachable to the windshield by two horizontally spaced suction cups and with a third windshield contact point. Below the axis is a bearing surface against which a cam pinned to the other member bears, under the weight of a receiver removably supported thereon, to limit the angle between said members and support the receiver horizontally. The cam is rotatable by a driver accessible lever formed integrally of the cam.