Telecommunications – Receiver or analog modulated signal frequency converter – Noise or interference elimination
Patent
1985-05-16
1987-04-14
Ng, Jin F.
Telecommunications
Receiver or analog modulated signal frequency converter
Noise or interference elimination
455 90, 455348, 455351, H04B 108, H04B 138, H04B 110
Patent
active
046584390
ABSTRACT:
The invention relates to a flat pack or housing for a radio apparatus having a rectangular cross-section comprising an opening at the front side and an opening at the back side which are respectively closable with a cover and also relates to a support mount for the radio apparatus. Such a radio apparatus provides the user with the possibility of versatile use at various use locations and is securable in a receptacle. To this end, the housing is divided into two tub-shaped main chambers by a bottom plate oriented parallel to the plane of the openings. The individual assemblies of the radio apparatus are disposed RF-shielded in the main chambers and the main chambers being closed by the covers by means of a central screw. Outside guide rails for acceptance into the support mount are disposed at opposite lateral faces of the housing. The support mount is composed of a sheet metal panel bent at three sides. The lower, bent part of the panel forms a chamber with a further bent sheet metal part which carries contacting elements and further assemblies for additional functions of the radio apparatus are accommodated in said latter chamber. A carrying shackle pivotable by 90.degree. is attached at the upper side of the radio apparatus. This carrying shackle provides a latching function when the radio apparatus is inserted in the support mount.
REFERENCES:
patent: 3071728 (1963-01-01), Grace et al.
patent: 3091736 (1963-05-01), Germain
patent: 3178891 (1965-04-01), Sharma
patent: 3348148 (1967-10-01), Parsons et al.
patent: 3667045 (1972-05-01), Combs
patent: 3723882 (1973-03-01), Carlson
patent: 3997819 (1976-12-01), Eggert et al.
patent: 4325142 (1982-04-01), Nakazawa
"COMCO Model 812 Portacom", 1/29/74.
Danielsen Geir
Thomfohrde Heiner
Ng Jin F.
Siemens Aktiengesellschaft
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