Goto Section: 80.353 | 80.357 | Table of Contents
FCC 80.355
Revised as of October 1, 2007
Goto Year:2006 |
2008
Sec. 80.355 Distress, urgency, safety, call and reply Morse code frequencies.
This section describes the distress, urgency, safety, call and reply carrier
frequencies assignable to stations for Morse code radiotelegraphy.
(a) Frequencies in the 100–160 kHz band. The international calling frequency
in the 100–160 kHz band is 143 kHz using A1A or J2A emission. When a ship
station operating in the 100–160 kHz band desires to communicate with a
coast station, it must call on the frequency 143 kHz unless the
International List of Coast Stations provides otherwise. Coast stations must
reply on their normal working frequency in this band. Only individual calls,
replies to such calls, and transmission of signals preparatory to traffic
may be transmitted on 143 kHz.
(b) Frequencies in the 2000–27500 kHz band —(1) Ship station frequencies.
The following table describes the calling frequencies in the 4000–27500 kHz
band which are available for use by authorized ship stations equipped with
crystal-controlled oscillators for A1A, J2A, J2B, or J2D radiotelegraphy.
There are two series of frequencies for worldwide use and two series of
frequencies for each geographic region. Ship stations with synthesized
transmitters may operate on every full 100 Hz increment in the 0.5 kHz
channel for the frequencies listed, except for 100 Hz above and below those
designated for worldwide use. During normal business hours when not
communicating on other frequencies, all U.S. coast radiotelegraph stations
must monitor the worldwide frequencies and the initial calling frequencies
for the region in which it is located. The specific frequencies which must
be monitored by a coast station will vary with propagation conditions. The
calling frequencies which are routinely monitored by specific coast stations
can be determined by reference to the ITU publication entitled “List of
Coast Stations.” Initial calls by ship stations must be made on the
appropriate initial calling frequency first. Calls on the worldwide
frequencies may be made only after calls on the appropriate initial calling
frequency are unsuccessful.
Ship Morse Calling Frequencies (kHz)
ITU ITU
Region:
Worldwide 3 4184.0 6276.0 8368.0 12552.0 16736.0 22280.5 C 25172.0
4 4184.5 6276.5 8369.0 12553.5 16738.0 22281.0 C 25172.0
Atlantic:
Initial 1 4182.0 6277.0 8366.0 12550.0 16734.0 22279.5 A 25171.5
Alternate 2 4182.5 6277.5 8366.5 12550.5 16734.5 22280.0 A 25171.5
Caribbean:
Initial 1 4182.0 6277.0 8366.0 12550.0 16734.0 22279.5 A 25171.5
Alternate 2 4182.5 6277.5 8366.5 12550.5 16734.5 22280.0 A 25171.5
Gulf-Mexico:
Initial 5 4183.0 6278.0 8367.0 12551.0 16735.0 22281.5 A 25171.5
Alternate 6 4183.5 6278.5 8367.5 12551.5 16735.5 22282.0 A 25171.5
N Pacific:
Initial 7 4185.0 6279.0 8368.5 12552.5 16736.5 22282.5 B 25172.5
Alternate 8 4185.5 6279.5 8369.5 12553.0 16737.0 22283.0 B 25172.5
S Pacific:
Initial 9 4186.0 6280.0 8370.0 12554.0 16737.5 22283.5 B 25172.5
Alternate 10 4186.5 6280.5 8370.5 12554.5 16738.5 22284.0 B 25172.5
(2) Coast Station frequencies. Coast stations may use any working carrier
frequency for distress, safety and calling listed in Sec. 80.357(b)(1) which is
not identified with a specific use.
(c) Frequencies in the VHF bands. (1) Survival craft stations using 121.500
MHz may be assigned A3N emission for radiobeacon purposes.
(2) EPIRB stations may be assigned 121.500 MHz and 243 MHz using A3E, A3X
and NON emission or 406.0–406.1 MHz using G1D emission to aid search and
rescue operations. See subpart V of this part.
[ 51 FR 31213 , Sept. 2, 1986; 51 FR 34984 , Oct. 1, 1986; 52 FR 35245 , Sept.
18, 1987; 56 FR 9886 , Mar. 8, 1991; 56 FR 11516 , Mar. 19, 1991; 68 FR 46969 ,
Aug. 7, 2003; 69 FR 64674 , Nov. 8, 2004]
Goto Section: 80.353 | 80.357
Goto Year: 2006 |
2008
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