Goto Section: 10.510 | 10.530 | Table of Contents

FCC 10.520
Revised as of October 1, 2010
Goto Year:2009 | 2011
  §  10.520   Common audio attention signal.

   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
   transmitted simultaneously.

   (c) For devices with only a monophonic capability, the audio attention
   signal must be 960 Hz.

   (d) The audio attention signal must be restricted to use for Alert
   Messages under part 10.

   (e) A device may include the capability to mute the audio attention

Goto Section: 10.510 | 10.530

Goto Year: 2009 | 2011
CiteFind - See documents on FCC website that cite this rule

Want to support this service?

Report errors in this rule. Since these rules are converted to HTML by machine, it's possible errors have been made. Please help us improve these rules by clicking the Report FCC Rule Errors link to report an error.
Helping make public information public