Sec. 80.111  Radiotelephone operating procedures for coast stations.

    This section applies to all coast stations using telephony which are 
subject to this part.
    (a) Limitations on calling. (1) Except when transmitting a general 
call to all stations for announcing or preceding the transmission of 
distress, urgency, or safety messages, a coast station must call the 
particular station(s) with which it intends to communicate.
    (2) Coast stations must call ship stations by voice unless it is 
known that the particular ship station may be contacted by other means 
such as automatic actuation of a selective ringing or calling device.
    (3) Coast stations may be authorized emission for selective calling 
on each working frequency.
    (4) Calling a particular station must not continue for more than one 
minute in each instance. If the called station does not reply, that 
station must not again be called for two minutes. When a called station 
does not reply to a call sent three times at intervals of two minutes, 
the calling must cease for fifteen minutes. However, if harmful 
interference will not be caused to other communications in progress, the 
call may be repeated after three minutes.
    (5) A coast station must not attempt to communicate with a ship 
station that has specifically called another coast station until it 
becomes evident that the called station does not answer, or that 
communication between the ship station and the called station cannot be 
carried on because of unsatisfactory operating conditions.
    (6) Calls to establish communication must be initiated on an 
available common working frequency when such a frequency exists and it 
is known that the called ship maintains a simultaneous watch on the 
common working frequency and the appropriate calling frequency(ies).
    (b) Time limitation on calling frequency. Transmissions by coast 
stations on 2182 kHz or 156.800 MHz must be minimized and any one 
exchange of communications must not exceed one minute in duration.
    (c) Change to working frequency. After establishing communications 
with another station by call and reply on 2182 kHz or 156.800 MHz coast 
stations must change to an authorized working channel for the 
transmission of messages.
    (d) Use of busy signal. A coast station, when communicating with a 
ship station which transmits to the coast station on a radio channel 
which is a different channel from that used by the coast station for 
transmission, may transmit a ``busy'' signal whenever transmission from 
the ship station is being received. The characteristics of

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the ``busy'' signal are contained in Sec. 80.74.
[51 1997 FR 31213 , Sept. 2, 1986, as amended at  52 FR 35244 , Sept. 18, 1987]

                   Operating Procedures--Ship Stations