# The Wireless Telegraphy (Exemption) Regulations 1999, Paragraph 9: Devices for the Detection of Avalanche Victims


Wireless telegraphy apparatus designed or adapted for the transmission of signals to aid in the locating of victims in distress or at risk, so as to be capable of producing a continuous wave only on either of the frequencies, and at a radiated level not exceeding the maximum for such frequencies, specified in the table below–
Frequencies or frequency band
Radiated level
Music or speech permitted
Duty cycle
ETSI standard
2275 kHz
42 dBμA/m @ 10 m
No
up to 100%
ETS 300 718
457 kHz
42 dBμA/m @ 10 m
No
up to 100%

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Source: https://www.legislation.gov.uk/uksi/1999/930/schedule/6/paragraph/9 (the official version)
Page: https://openlegislation.uk/wireless-telegraphy-exemption-regulations-1999/schedule-6/paragraph-9
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.