ITU-R REPORT M.739-1 PDF

Introduction

Intermodulation causes a degradation to radio services when:

— unwanted emissions are generated in transmitters;

— unwanted emissions are generated in non-linear elements external to the transmitters; or

— in-band intermodulation products are generated in the radio-frequency stages of receivers.

These cases occur with varying probability and varying severity. They may be reduced by equipment design or careful choice of channels, but solutions of the latter type to one case of intermodulation may increase another.