47 CFR § 80.357 - Working frequencies for Morse code and data transmission.

§ 80.357 Working frequencies for Morse code and data transmission.

This section describes the working frequencies assignable to maritime stations for A1A, J2A, J2B (2000-27500 kHz band only), or J2D (2000-27500 kHz band only) radiotelegraphy.

(a) Ship station frequencies -

(1) Frequencies in the 100-160 kHz band. The following table describes the working carrier frequencies in the 100-160 kHz band which are assignable to ship stations. A ship station may also transmit on a radiotelegraphy working channel of a coast station within the 100-160 kHz band when directed to do so by the coast station provided interference is not caused to any land, fixed, broadcast, or radiolocation station.

100-160 (kHz)
152
153
154
155
156
157
158

(2) Frequencies in the 405-525 kHz band. The following table describes the working carrier frequencies in the 405-525 kHz band which are assignable to ship stations. A ship station may transmit on a radiotelegraphy working channel of a coast station in the 415-490 kHz band when directed to do so by the coast station.

405-525 (kHz)
1 410
425
454
468
480
2 512
3 518

1 The frequency 410 kHz may be used on a secondary basis for the transmission of radiodetermination information and for transmitting by radiotelegraph radiodetermination related messages to direction-finding stations.

2 The frequency 512 kHz may be used as a supplementary calling frequency when 500 kHz is used for distress, safety and urgency communications. The use of the 512 kHz as a working frequency is prohibited in areas where it is used as a supplementary calling frequency when 500 kHz is used for distress, safety, and urgency communications.

3 The frequency 518 kHz is a receive only frequency by ship stations. It is used by U.S. Coast Guard coast stations for NB-DP transmissions of meteorological and navigational warnings to ships.

(3) Frequencies in the 2000-27500 kHz band. This paragraph describes the working frequencies and Channel Series in the 2000-27500 kHz band which are assignable to ship stations.

(i) Two Channel Series will be assigned for routine use to each ship station. Frequencies from any other Channel Series may be used if the frequencies in the assigned Channel Series are not adequate for communications.

Ship Morse Working Frequencies (kHz)

Channel Series:
W1 4187.0 6285.0 8342.0 12422.0 16619.0 22242.0 25161.5
8343.5 12453.0 16650.0 22273.0
16681.0
W2 4187.5 6285.5 8342.5 12422.5 16619.5 22242.5 25162.0
8344.0 12453.5 16650.5 22273.5
16681.5
W3 4188.0 6286.0 8343.0 12423.0 16620.0 22243.0 25162.5
8344.5 12454.0 16651.0 22274.0
16682.0
W4 4188.5 6286.5 8343.5 12423.5 16620.5 22243.5 25163.0
8345.0 12454.5 16651.5 22274.5
16682.5
W5 4189.0 6287.0 8344.0 12424.0 16621.0 22244.0 25163.5
8345.5 12455.0 16652.0 22275.0
16683.0
W6 4189.5 6287.5 8344.5 12424.5 16621.5 22244.5 25164.0
8346.0 12455.5 16652.5 22275.5
16619.0
W7 4190.0 6288.0 8345.0 12425.0 16622.0 22245.0 25164.5
8346.5 12456.0 16653.0 22276.0
16619.5
W8 4190.5 6288.5 8345.5 12425.5 16622.5 22245.5 25165.0
8347.0 12456.5 16653.5 22276.5
16620.0
W9 4191.0 6289.0 8346.0 12426.0 16623.0 22246.0 25165.5
8347.5 12457.0 16654.0 22277.0
16620.5
W10 4191.5 6289.5 8346.5 12426.5 16623.5 22246.5 25166.0
8348.0 12457.5 16654.5 22270.5
16621.0
W11 4192.0 6290.0 8347.0 12427.0 16624.0 22247.0 25166.5
8348.5 12458.0 16655.0 22278.0
16621.5
W12 4192.5 6290.5 8347.5 12427.5 16624.5 22247.5 25167.0
8349.0 12458.5 16655.5 22278.5
16622.0
W13 4193.0 6291.0 8348.0 12428.0 16625.0 22248.0 25167.5
8349.5 12459.0 16656.0 22279.0
16622.5
W14 4193.5 6291.5 8348.5 12428.5 16625.5 22248.5 25168.0
8350.0 12459.5 16656.5 22242.0
16623.0
W15 4194.0 6292.0 8349.0 12429.0 16626.0 22249.0 25168.5
8350.5 12460.0 16657.0 22242.5
16623.5
W16 4194.5 6292.5 8349.5 12429.5 16626.5 22249.5 25169.0
8351.0 12460.5 16657.5 22243.0
16624.0
W17 4195.0 6293.0 8350.0 12430.0 16627.0 22250.0 25169.5
8351.5 12461.0 16658.0 22243.5
16624.5
W18 4195.5 6293.5 8350.5 12430.5 16627.5 22250.5 25170.0
8352.0 12461.5 16658.5 22244.0
16625.0
W19 4196.0 6294.0 8351.0 12431.0 16628.0 22251.0 25170.5
8352.5 12462.0 16659.0 22244.5
16625.5
W20 4196.5 6294.5 8351.5 12431.5 16628.5 22251.5 25171.0
8353.0 12462.5 16659.5 22245.0
16626.0
W21 4197.0 6295.0 8352.0 12432.0 16629.0 22252.0 25161.5
8353.5 12463.0 16660.0 22245.5
16626.5
W22 4197.5 6295.5 8352.5 12432.5 16629.5 22252.5 25162.0
8354.0 12463.5 16660.5 22246.0
16627.0
W23 4198.0 6296.0 8353.0 12433.0 16630.0 22253.0 25162.5
8354.5 12464.0 16661.0 22246.5
16627.5
W24 4198.5 6296.5 8353.5 12433.5 16630.5 22253.5 25163.0
8355.0 12464.5 16661.5 22247.0
16628.0
W25 4199.0 6297.0 8354.0 12434.0 16631.0 22254.0 25163.5
8355.5 12465.0 16662.0 22247.5
16628.5
W26 4199.5 6297.5 8354.5 12434.5 16631.5 22254.5 25164.0
8356.0 12465.5 16662.5 22248.0
16629.0
W27 4200.0 6298.0 8355.0 12435.0 16632.0 22255.0 25164.5
8356.5 12466.0 16663.0 22248.5
16629.5
W28 4200.5 6298.5 8355.5 12435.5 16632.5 22255.5 25165.0
8357.0 12466.5 16663.5 22249.0
16630.0
W29 4201.0 6299.0 8356.0 12436.0 16633.0 22256.0 25165.5
8357.5 12467.0 16664.0 22249.5
16630.5
W30 4201.5 6299.5 8356.5 12436.5 16633.5 22256.5 25166.0
8358.0 12467.5 16664.5 22250.0
16631.0
W31 4202.0 6300.0 8357.0 12437.0 16634.0 22257.0 25166.5
8358.5 12468.0 16665.0 22250.5
16631.5
W32 4202.0 6300.0 8357.5 12437.5 16634.5 22257.5 25167.0
8359.0 12468.5 16665.5 22251.0
16632.0
W33 4201.5 6299.5 8358.0 12438.0 16635.0 22258.0 25167.5
8359.5 12469.0 16666.0 22251.5
16632.5
W34 4201.0 6299.0 8358.5 12438.5 16635.5 22258.5 25168.0
8360.0 12469.5 16666.5 22252.0
16633.0
W35 4200.5 6298.5 8359.0 12439.0 16636.0 22259.0 25168.5
8360.5 12470.0 16667.0 22252.5
16633.5
W36 4200.0 6298.0 8359.5 12439.5 16636.5 22259.5 25169.0
8361.0 12470.5 16667.5 22253.0
16634.0
W37 4199.5 6297.5 8360.0 12440.0 16637.0 22260.0 25169.5
8361.5 12471.0 16668.0 22253.5
16634.5
W38 4199.0 6297.0 8360.5 12440.5 16637.5 22260.5 25170.0
8362.0 12471.5 16668.5 22254.0
16635.0
W39 4198.5 6296.5 8361.0 12441.0 16638.0 22261.0 25170.5
8362.5 12472.0 16669.0 22254.5
16635.5
W40 4198.0 6296.0 8361.5 12441.5 16638.5 22261.5 25171.0
8363.0 12472.5 16669.5 22255.0
16636.0
W41 4197.5 6295.5 8362.0 12442.0 16639.0 22262.0 25161.5
8363.5 12473.0 16670.0 22255.5
16636.5
W42 4197.0 6295.0 8362.5 12442.5 16639.5 22262.5 25162.0
8364.0 12473.5 16670.5 22256.0
16637.0
W43 4196.5 6294.5 8363.0 12443.0 16640.0 22263.0 25162.5
8364.5 12474.0 16671.0 22256.5
16637.5
W44 4196.0 6294.0 8363.5 12443.5 16640.5 22263.5 25163.0
8365.0 12474.5 16671.5 22257.0
16638.0
W45 4195.5 6293.5 8364.0 12444.0 16641.0 22264.0 25163.5
8365.5 12475.0 16672.0 22257.5
16638.5
W46 4195.0 6293.0 8364.5 12444.5 16641.5 22264.5 25164.0
8371.0 12475.5 16672.5 22258.0
16639.0
W47 4194.5 6292.5 8365.0 12445.0 16642.0 22265.0 25164.5
8371.5 12476.0 16673.0 22258.5
16639.5
W48 4194.0 6292.0 8365.5 12445.5 16642.5 22265.5 25165.0
8372.0 12476.5 16673.5 22259.0
16640.0
W49 4193.5 6291.5 8371.0 12446.0 16643.0 22266.0 25165.5
8372.5 12422.0 16674.0 22259.5
16640.5
W50 4193.0 6291.0 8371.5 12446.5 16643.5 22266.5 25166.0
8373.0 12422.5 16674.5 22260.0
16641.0
W51 4192.5 6290.5 8372.0 12447.0 16644.0 22267.0 25166.5
8373.5 12423.0 16675.0 22260.5
16641.5
W52 4192.0 6290.0 8372.5 12447.5 16644.5 22267.5 25167.0
8374.0 12423.5 16675.5 22261.0
16642.0
W53 4191.5 6289.5 8373.0 12448.0 16645.0 22268.0 25167.5
8374.5 12424.0 16676.0 22261.5
16642.5
W54 4191.0 6289.0 8373.5 12448.5 16645.5 22268.5 25168.0
8375.0 12424.5 16676.5 22262.0
16643.0
W55 4190.5 6288.5 8374.0 12449.0 16646.0 22269.0 25168.5
8375.5 12425.0 16677.0 22262.5
16643.5
W56 4190.0 6288.0 8374.5 12449.5 16646.5 22269.5 25169.0
8376.0 12425.5 16677.5 22263.0
16644.0
W57 4189.5 6287.5 8375.0 12450.0 16647.0 22270.0 25169.5
8342.0 12426.0 16678.0 22263.5
16644.5
W58 4189.0 6287.0 8375.5 12450.5 16647.5 22270.5 25170.0
8342.5 12426.5 16678.5 22264.0
16645.0
W59 4188.5 6286.5 8376.0 12451.0 16648.0 22271.0 25170.5
8343.0 12427.0 16679.0 22264.5
16645.5
W60 4188.0 6286.0 8342.0 12451.5 16648.5 22271.5 25171.0
8343.5 12427.5 16679.5 22265.0
16646.0
W61 4187.5 6285.5 8342.5 12452.0 16649.0 22272.0 25161.5
8344.0 12428.0 16680.0 22265.5
16646.5
W62 4187.0 6285.0 8343.0 12452.5 16649.5 22272.5 25162.0
8344.5 12428.5 16680.5 22266.0
16678.0

(ii) If the frequencies listed in paragraph (3)(i) of this section are not adequate for communications, ship stations may use any of the non-paired narrow-band direct-printing frequencies listed in § 80.361(b) of this part for A1A or J2A radiotelegraphy.

(b) Coast station frequencies -

(1) Frequencies in the 100-27500 kHz band. The following table describes the working carrier frequencies in the 100-27500 kHz band which are assignable to coast stations located in the designated geographical areas. The exclusive maritime mobile HF bands listed in the table contained in § 80.363(a)(2) of this chapter are also available for assignment to public coast stations for A1A, J2A, J2B, or J2D radiotelegraphy following coordination with government users.

Area Bands 1
100-160 kHz 405-525 kHz 2 MHz 4 MHz 6 MHz 8 MHz 12 MHz 16 MHz 22 MHz
Central Pacific 126.15 426.00 2037.5 4247.0 6348.0 8558.0 12695.5 17016.8 22479.0
436.00 2045.0 4274.0 6365.5 8618.0 12808.5 17026.0 22515.0
147.85 460.00 2061.5 4228.0 6477.5 8642.0 12844.5 17088.8 22557.0
476.0 6488.0 8445.0 13002.0 22581.5
500.00 13033.5
512.00
South Pacific 418.00 2049.5 4238.0 6355.0 8590.0 12691.0 17064.8 22467.0
464.00 2055.5 4283.0 6463.5 8606.0 12912.0 17088.8 22593.5
482.00 8642.0 12993.0 17220.5
500.00 13033.5
512.00
Gulf of Mexico 153.00 410.00 2042.0 4256.0 6369.0 8473.0 12704.5 17117.6 22467.0
420.00 2048.0 4274.0 6435.5 8550.0 12826.5 17170.4 22668.5
434.00 2049.5 4310.0 6446.0 8570.0 12840.0 17172.4 22686.5
438.00 2052.5 4322.0 6495.0 8666.0 13038.0 17230.1 22688.0
478.00 2055.5 8445.0 13051.5
484.00 2063.0 8453.0 12660.0
500.00
512.00
Great Lakes 482.00 4316.0 6474.0 8534.0
500.00
512.00
Hawaii 484.00 2052.5 4295.0 6407.5 8542.0 13029.0 16978.4 22509.0
500.00
512.00
Puerto Rico 153.00 486.00 2052.5 4244.0 8457.0 12700.0
500.00
512.00
North Atlantic 112.85 418.00 2036.0 4238.0 6351.5 8502.0 12745.5 16933.2 22485.0
124.05 436.00 2040.5 4268.0 6376.0 8514.0 12925.5 16968.8 22503.0
130.35 442.00 2046.5 4331.0 6414.5 8586.0 12948.0 16973.6 22521.0
132.10 460.00 2051.0 4343.0 6418.0 8610.0 12961.5 16997.6 22599.5
134.55 472.00 2054.0 4346.0 6333.5 8630.0 12997.5 17021.6 22640.0
137.00 476.00 2060.0 6337.0 8658.0 13020.0 17093.6 22658.0
482.00 6344.0 8686.0 13024.5 16904.9
146.80 500.00 13033.5
147.50 512.00 13060.5
Central Atlantic 428.00 2063.0 4346.0 6484.5 8502.0 12885.0 16916.5 22588.5
500.00
512.00
South Atlantic 137.70 434.00 2039.0 4250.0 6389.6 8486.0 12952.5 16918.8 22503.0
464.00 2043.5 4292.0 6407.5 8525.0 12970.5 17093.6 22575.5
472.00 2051.0 4295.0 6411.0 8686.0 13011.0 17160.8
488.00 2057.0 8453.0 12660.0 17170.4
500.00 17239.7
512.00
North Pacific 482.00 2058.5 4349.0 6411.0 8582.0 12907.5 17007.2 22539.0
488.00 2063.0 8658.0 12916.5
500.00
512.00
Alaska 416.00
438.00
452.00
472.00
512.00

1 All frequencies in this table are shown in kilohertz. The use of frequencies in the 472-479 kHz band is restricted to public coast stations that were licensed on or before July 14, 2017.

(2) Conditions of use. The following conditions are applicable to these frequencies:

(i) Frequencies in the 100-160 kHz band are assignable to coast stations for high seas communications only;

(ii) Frequencies above 5 MHz may be assigned primarily to stations serving the high seas and secondarily to stations serving inland waters of the United States, including the Great Lakes, under the condition that interference will not be caused to any coast station serving the high seas.

(iii) The frequency 410 kHz may be used on a secondary basis for the transmission of radiodetermination information and for transmitting by radiotelegraph radiodetermination messages to direction-finding stations; and

[51 FR 31213, Sept. 2, 1986; 51 FR 34984, Oct. 1, 1986, as amended at 56 FR 9887, Mar. 8, 1991; 56 FR 34029, July 25, 1991; 65 FR 77824, Dec. 13, 2000; 67 FR 48264, July 15, 2002; 68 FR 46969, Aug. 7, 2003; 69 FR 64674, Nov. 8, 2004; 82 FR 27213, June 14, 2017; 82 FR 48460, Oct. 18, 2017]