Abstract: A mobile radio wave receiver including an automatic gain control amplifier, an electric field intensity detection circuit, an error correction circuit, and an error correction error detection circuit is disclosed. The automatic gain controlling is selectively effected in accordance with the detected electric field intensity and a degree of the detected error correction errors. The mobile radio wave receiver further includes a bandpass filter with a first variable bandwidth and a waveform shaping circuit with a second variable bandwidth, wherein the first and second variable bandwidths are controlled in accordance with the detected electric field intensity and the degree of the error correction errors.

Abstract: A support plate for tiles comprises a rectangular metal plate formed with a plurality of tile support pieces projecting out of the metal plate. The end portions of tile support pieces are bent to form flanges which are adapted to fit into a groove or grooves provided in a tile.

Abstract: An assembly for mounting plate-like materials on a wall surface. Horizontal bars are directly or indirectly mounted on the wall surface one above the other with spacings left therebetween. Two kinds of supports, one having a downward flange and the other having an upward flange, are mounted on the bar to support the plates with the downward and upward flanges engaging the top and bottom edges of the plate members, respectively.

Abstract: An apparatus for setting tiles on the surface of plaster comprises a plurality of vertical bars joined at regular intervals by a plurality of horizontal bars that serve as rests for the tiles. Each horizontal bar is held in place by a pair of horizontal bar holders mounted on the adjacent vertical bars.