Sec. 80.319 Radiotelegraph distress call and message transmission
procedure.
(a) The radiotelegraph distress procedure consists of the following
six steps: however, when time is vital, the first and second steps may
be omitted. These two steps of the distress procedure may also be
omitted in circumstances when transmission of the alarm signal is
considered unnecessary:
(1) The radiotelegraph alarm signal;
(2) The distress call and an interval of two minutes;
(3) The distress call;
(4) The distress message;
(5) Two dashes of ten to fifteen seconds each;
(6) The call sign of the mobile station in distress.
(b) The radiotelegraph distress transmissions must be sent by means
of the international Morse code at a speed not exceeding 16 words per
minute nor less than 8 words per minute.
(c) The distress message, preceded by the distress call, must be
repeated at intervals, especially during the 500 kHz international
silence periods, until an answer is received. The radiotelegraph
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alarm signal may also be repeated, if necessary.
(d) The transmissions under paragraphs (a) (5) and (6) of this
section, which are to permit direction finding stations to determine the
position of the station in distress, may be repeated at frequent
intervals if necessary.
(e) When the mobile station in distress receives no answer to a
distress message transmitted on the distress frequency, the message may
be repeated on any other available frequency on which attention might be
attracted.
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