Control for navigation receivers, radio compasses, radio, and aircraft telephony, transponders and the like

The control for navigation receivers, radio compasses, radio, and aircraft telephony, transponders, and the like comprising:

• a front plate;
• a plurality of control plates each having a printed circuit thereon and spaced apart and freely mounted to said front plate;
• rest contacts mounted on said printed circuit;
• rotary knobs mounted and disposed on a first shaft means in said front plate;
• coupling means operatively connected to said rotary knobs;
• sprocket wheels having associated ratchet wheels operatively connected with each other by said coupling means;
• a plurality yieldable control contact means operatively mounted on said sprocket wheels and a second shaft means parallel to said first shaft means which cooperate with said rest contacts for operatively controlling frequencies and other operational functions;
• said yieldable control contact means comprise contact discs coupled with said sprocket wheels by means of said second shaft means;
• and
• insulating bushings mounted on said contact discs, and said sprocket wheels;
• wherein at least one of said control contact means is operatively disposed on said insulating bushings on said sprocket wheels and said contact discs, respectively, and said control contact means each have a yieldable front contact face which cooperates with said rest contacts such that a desired control connection is achieved.