ARRL

Intermodulation

Introduction

Intermodulation is a source of interference that arises from the combination of two or more signals at different frequencies in some kind of non-linear system.   For example, you could hear strong interference at 14.0 MHz if there are two strong signals at 86.0 and 100.0 MHz that combine in a rectifying circuit, such as an oxidized fence connection or a gutter.

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