A method for regulating the level of the output signal of a zone selective interlocking high frequency - amplifier for multi-channel systems and range of selective hcohfrequenz - amplifier circuit, as a rule, with level

摘要

A method for regulating the level of the output signal of a zone selective interlocking high frequency - amplifier for multi-channel systems, in particular of a repeater for mobile radio systems, comprising the steps of:– Formation of intermodulation products from the amplified rf - signals,– Generating a control variable of the intermodulation products,– Comparing the controlled variable, with a desired value and form of an actuating signal,– Controlling the gain of the amplifier with the actuating signal.