Cam actuated control device including a plurality of binary switches coplanarly mounted on a circuit substrate

A radio having a cam actuated control device, comprising:

• a radio housing;
• a circuit substrate mounted within the radio housing;
• a plurality of discrete momentary tactile switches coplanarly mounted on the circuit substrate, each switch having at least two positions, wherein two switches combine to have at least four states corresponding to the relative position of the two switches;
• and
• an actuating member comprising a rotary bezel having a contoured cam surface, the cam surface having depressions that acccommodate without actuating the switches, and lobes that actuate the switches when positioned over the switches, the cam surface movably positioned proximate to the two switches;
• wherein movement of the actuating member moves the lobes and depressions of the cam surface over the two switches to selectively actuate the two switches succesively through each of the at least four states to produce a binary encoded output.