Method of sensing descrete operational states

摘要

A method of sensing the desvcrete operational states of a device that is remote from a direct current power supply in which the desrete operational states have different levels of electrical power for use in a remotely mountable weatherproof bi-directional, half-duplex switching amplifier system designed to provide maximum range for low power half-duplex radios such as Spread Spectrum radio transceivers and in which the current being drawn by the device flows through a series connected resistor and in which the voltage drop across the resistor is sensed.