# The Wireless Telegraphy (Control of Interference from Radio-Frequency Heating Apparatus) Regulations 1971, Regulation 5


(1) For the purpose of measuring and computing the field strength of the electro-magnetic energy and the terminal voltage at frequencies exceeding 150 kilohertz but not exceeding 1000 megahertz the radio-frequency heating apparatus shall be tested by means of measuring apparatus of the description and having the physical and electrical characteristics and performance set out in British Standard 727 : 1967, Section 1, Pages 9–13.
(2) The tests for field strength shall be made by the method and under the conditions set out in Part 2 of Schedule 2 and the tests for terminal voltage shall be made by the method and under the conditions set out in Part 3 of Schedule 2.
(3) The said field strength and terminal voltage shall be computed as provided in Parts 2 and 3 of Schedule 2 from the readings afforded by the measuring apparatus while the radio-frequency heating apparatus is operating.

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Source: https://www.legislation.gov.uk/uksi/1971/1675/regulation/5 (the official version)
Page: https://openlegislation.uk/wireless-telegraphy-control-of-interference-from-radio-frequency-heating-apparatus-regulations-1971/regulation-5
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.