scope:

Introduction

The industrial, scientific and medical (ISM) equipment for non-communications applications has been extensively used for various purposes, i.e., drying, melting, heating, welding, thawing, cooking, tempering, soldering, brazing, moulding, imaging, and so on.

Recently, ITU-R developed the Recommendation ITU-R SM.1056 regarding the protection of radio services from the emission radiated by the ISM equipment. The emission limits for ISM equipment recommended by ITU-R has reference to the limits of the International Special Committee on Radio Interference (CISPR) Publication 11. It is known that the limits of CISPR 11 are based on the interference model provided in CISPR 16-4-4.

It is expected that both ISM equipment and radio transceivers are used in close proximity with each other since the number of these RF devices is on the increase. Thus, there is a need to examine impact of the ISM equipment on radio services