Sec.  97.309   RTTY and data emission codes.

   (a) Where authorized by  Sec.  Sec. 97.305(c) and 97.307(f) of the part, an amateur
   station may transmit a RTTY or data emission using the following specified
   digital codes:

   (1) The 5-unit, start-stop, International Telegraph Alphabet No. 2, code
   defined  in  ITU–T  Recommendation  F.1, Division C (commonly known as
   “Baudot”).

   (2) The 7-unit code specified in ITU–R Recommendations M.476–5 and M.625–3
   (commonly known as “AMTOR”).

   (3)  The  7-unit,  International Alphabet No. 5, code defined in IT–-T
   Recommendation T.50 (commonly known as “ASCII”).

   (4) An amateur station transmitting a RTTY or data emission using a digital
   code specified in this paragraph may use any technique whose technical
   characteristics have been documented publicly, such as CLOVER, G-TOR, or
   PacTOR, for the purpose of facilitating communications.

   (b) Where authorized by  Sec.  Sec. 97.305(c) and 97.307(f) of this part, a station
   may transmit a RTTY or data emission using an unspecified digital code,
   except to a station in a country with which the United States does not have
   an agreement permitting the code to be used. RTTY and data emissions using
   unspecified  digital  codes must not be transmitted for the purpose of
   obscuring the meaning of any communication. When deemed necessary by a
   District Director to assure compliance with the FCC Rules, a station must:

   (1) Cease the transmission using the unspecified digital code;

   (2) Restrict transmissions of any digital code to the extent instructed;

   (3) Maintain a record, convertible to the original information, of all
   digital communications transmitted.

   [ 54 FR 25857 , June 20, 1989, as amended at  54 FR 39537 , Sept. 27, 1989;  56 FR 56172 , Nov. 1, 1991;  60 FR 55486 , Nov. 1, 1995;  71 FR 25982 , May 3, 2006;
    71 FR 66465 , Nov. 15, 2006]