Goto Section: 10.510 | 10.530 | Table of Contents
Revised as of September 1, 2021
Goto Year:2020 |
§ 10.520 Common audio attention signal.
Link to an amendment published at 86 FR 46790 , Aug. 20, 2021.
A Participating CMS Provider and equipment manufacturers may only
market devices for public use under part 10 that include an audio
attention signal that meets the requirements of this section.
(a) The audio attention signal must have a temporal pattern of one long
tone of two (2) seconds, followed by two short tones of one (1) second
each, with a half (0.5) second interval between each tone. The entire
sequence must be repeated twice with a half (0.5) second interval
between each repetition.
(b) For devices that have polyphonic capabilities, the audio attention
signal must consist of the fundamental frequencies of 853 Hz and 960 Hz
(c) For devices with only a monophonic capability, the audio attention
signal must be 960 Hz.
(d) No person may transmit or cause to transmit the WEA common audio
attention signal, or a recording or simulation thereof, in any
circumstance other than in an actual National, State or Local Area
emergency or authorized test, except as designed and used for Public
Service Announcements (PSAs) by federal, state, local, tribal and
territorial entities, and non-governmental organizations in
coordination with those entities, to raise public awareness about
emergency alerting, provided that the entity presents the PSA in a
non-misleading manner, including by explicitly stating that the
emergency alerting attention signal is being used in the context of a
PSA for the purpose of educating the viewing or listening public about
(e) A device may include the capability to mute the audio attention
[ 73 FR 43117 , July 24, 2008, as amended at 81 FR 75727 , Nov. 1, 2016]
Goto Section: 10.510 | 10.530
Goto Year: 2020 |
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