Abstract: A suspension device for rotatable appliances, such as antennas, of the type which for rotation is connectible with a frame-mounted shaft which extends through a power operated disk or a similar antenna mounting and which, beyond the antenna mounting, has a free end mounted in a stationary part, which is capable of limited motion generated rated by insufficient concentricity between the antenna mounting and the shaft. An angle-transducing device is provided for said shaft. A connector is arranged adjacent to or round the shaft and directs components of force on the stationary part which have arisen owing to sufficient concentricity to merely displacement in the X-Y direction in a plane perpendicular to the shaft, by the connector being displaceably fixed in the X direction to the stationary part and displaceably fixed in the Y direction to the frame, or by the connector being displaceably fixed in the X direction to the shaft and displaceably fixed in the Y direction to the antenna mounting.

Abstract: The invention is directed to a microwave switch comprising a switch housing having side walls in which wave guide terminals are provided, and a switch rotor carried by a shaft which is mounted in bearings in said switch housing and being rotatable between switch positions defined by stop means limiting the rotation of said switch rotor a maximum of 180.degree., and an electromagnetic driving device having a permanent magnetic rotor part fixed directly onto the shaft of the switch rotor and having diametrically positioned magnetic poles of opposite polarities, and a stator part having an electric driving coil arranged on a magnetic yoke which is connected with two poles shoes, said stop means comprising a stop element on said switch rotor and impact elements provided in said switch housing.