| link_1 = https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/947004/ds-0010-21-radio-equipment-notice.pdf | | link_1 = https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/947004/ds-0010-21-radio-equipment-notice.pdf |