I need to build a simple circuit to enable a voice scrambler in a radio. What I need is a momentary contact by pressing a button so that the activation lead goes to ground and when this happens I need an led indication that the unit has been activated. I also need the led to turn off when the button is pressed again. This deactivates the board and the radio returns to normal mode. I need this in a small box. Does anyone have a circuit I could build for this particular application?
Thanks, Rich
