# The Wireless Telegraphy (Exemption) Regulations 1999, Paragraph 21: Radio Microphones


Wireless telegraphy apparatus designed or adapted for Telephony, for the purpose of aids to project personal voice or music, so as to be capable of use on one or more of the frequencies within the frequency bands, and at a radiated level not exceeding the maximum for such frequencies or frequency bands, for each category of apparatus, specified in the table below–
Frequencies or frequency band
Radiated level
Channel bandwidth
Music or speech permitted
ETSI standard
174.6, 174.675, 174.77, 174.885, 175.02 MHz
5 mW erp
50 kHz
Yes
I-ETS 300 422
173.8, 174.1, 174.5, 174.8, 175.0 MHz
2 mW erp
180 kHz
Yes
863–865 MHz
10 mW erp
≤ 200 kHz
Yes

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Source: https://www.legislation.gov.uk/uksi/1999/930/schedule/6/paragraph/21 (the official version)
Page: https://openlegislation.uk/wireless-telegraphy-exemption-regulations-1999/schedule-6/paragraph-21
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.