Explanatory note

These Regulations prescribe the requirements to be complied with in relation to certain radio-frequency heating apparatus used in the British Islands on or after the 21st October 1972, for the purpose of ensuring that it will not cause undue interference with wireless telegraphy.

The requirements are prescribed in terms of the maximum permitted field strength of the electro-magnetic energy radiated from the apparatus and the maximum permitted radio-frequency voltage at the supply line terminals of the apparatus at specified frequencies.

Non-compliance with the limits is not an offence, but is a ground on which the Minister of Posts and Telecommunications may serve an enforcement notice under section 11 of the Wireless Telegraphy Act 1949.

For convenience the terms “kilohertz” and “megahertz” are used in these Regulations in preference to “kilocycles per second” and “megacycles per second” since the “hertz” (equivalent to one cycle per second) is used as the unit of frequency in British and International Standards with which these Regulations are aligned.