§  95.193   (FRS Rule 3) Types of communications.

   (a) You may use an FRS unit to conduct two-way voice communications
   with another person. You may use an FRS unit to transmit one-way voice
   or non-voice communications only to establish communications with
   another person, send an emergency message, provide traveler assistance,
   provide location information, transmit a brief text message, make a
   voice page, or to conduct a brief test.

   (b) Non-voice communications. (1) The FRS unit may transmit tones to
   make contact or to continue communications with a particular FRS unit.
   If the tone is audible (more than 300 Hertz), it must be transmitted
   continuously no longer than 15 seconds at one time. If the tone is
   subaudible (300 Hertz or less), it may be transmitted continuously only
   while you are talking.

   (2) The FRS unit may transmit digital data containing location
   information, or requesting location information from one or more other
   FRS units, or containing a brief text message to another specific FRS
   unit. Digital data transmissions must be initiated by a manual action
   or command of a user, except that an FRS unit receiving an
   interrogation request may automatically respond with its location.
   Digital data transmissions shall not exceed one second, and shall be
   limited to no more than one digital transmission within a thirty-second
   period, except that an FRS unit may automatically respond to more than
   one interrogation request received within a thirty-second period.

   (c) You must not use an FRS unit in connection with any activity which
   is against federal, state or local law.

   (d) You must, at all times and on all channels, give priority to
   emergency communication messages concerning the immediate safety of
   life or the immediate protection of property.

   (e) No FRS unit may be interconnected to the public switched network.

   [ 61 FR 28768 , June 6, 1996, as amended at  68 FR 9901 , Mar. 3, 2003]