§ 25.281   Transmitter identification requirements for video uplink
transmissions.

   (a) Earth-to-space transmissions carrying video information with analog
   modulation  must be identified through use of an Automatic Transmitter
   Identification System (ATIS) with an analog identifier or a direct sequence
   spread spectrum signal.

   (1) Use of an analog identifier must be in accordance with the following
   requirements:

   (i) The ATIS signal must be a separate subcarrier that is automatically
   activated whenever any radio frequency signal is transmitted.

   (ii) The ATIS message must continuously repeat.

   (iii) The ATIS subcarrier signal must be generated at a frequency of 7.1 MHz
   ±25 kHz and modulate the uplink radio frequency carrier at a level no less
   than −26 dB (referenced to the unmodulated carrier).

   (iv) ATIS subcarrier deviation must not exceed 25 kHz.

   (v) The ATIS message protocol must be International Morse Code keyed by a
   1200 Hz ±800 Hz tone representing a mark and a message rate of 15 to 25
   words per minute. The tone must frequency-modulate the subcarrier signal
   with the ATIS message.

   (vi)  The  ATIS message must include the FCC-assigned call sign of the
   transmitting earth station, a telephone number providing immediate access to
   personnel capable of resolving interference or coordination problems, and a
   unique serial number of ten or more digits programmed into the ATIS message
   in a permanent manner so that it cannot be readily changed by the operator
   on duty. Additional information may be included in the ATIS data stream
   provided the total ATIS message length does not exceed 30 seconds.

   (2)  Use  of  a direct sequence spread spectrum ATIS signal must be in
   accordance  with the requirements in paragraphs (b)(1) and (2) of this
   section.

   (b)  As  of  June 1, 2016, transmissions of fixed-frequency, digitally
   modulated  video  signals with a symbol rate of 128,000/s or more from
   Satellite News Gathering vehicles or other temporary-fixed earth stations
   must be identified through use of an ATIS in accordance with the following
   requirements:

   (1)  The  ATIS message must be modulated onto a direct sequence spread
   spectrum signal in accordance with the DVB-CID standard, ETSI TS 103 129
   (2013-05), “Technical Specification, Digital Video Broadcasting (DVB);
   Framing structure, channel coding and modulation of a carrier identification
   system (DVB-CID) for satellite transmission.” This document is incorporated
   by  reference in accordance with 5 U.S.C. 552(a) and 1 CFR part 51 and
   approved by the Director of the Federal Register. The ETSI document may be
   obtained from ETSI, 650 Route des Lucioles, 06921 Sophia Antipolis Cedex,
   France and by email to webstore@etsi.org and a copy can be downloaded from
   http://www.etsi.org. You may inspect a copy at the Federal Communications
   Commission, 445 12th Street SW., Washington, DC 20554, or at the National
   Archives  and  Records  Administration  (NARA). For information on the
   availability  of  this  material  at NARA, call 202-741-6030 or go to:
   http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_loc
   ations.html.

   (2) The ATIS message must continuously repeat.

   (c) ATIS equipment must be integrated into the uplink transmitter chain with
   a method that cannot easily be defeated.

   [ 79 FR 8325 , Feb. 12, 2014]

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