# The Wireless Telegraphy (Control of Interference from Radio-Frequency Heating Apparatus) Regulations 1971, Paragraph 3


All other electrical apparatus which is installed in proximity to the radio-frequency heating apparatus, and which in operation could appreciably affect the result of the test, shall be switched off or otherwise prevented from being energised by complete or partial electrical disconnection.

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Source: https://www.legislation.gov.uk/uksi/1971/1675/schedule/2/paragraph/3 (the official version)
Page: https://openlegislation.uk/wireless-telegraphy-control-of-interference-from-radio-frequency-heating-apparatus-regulations-1971/schedule-2/paragraph-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.