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Code of Federal Regulations Title 47. Telecommunication § 47.80.357 Working frequencies for Morse code and data transmission

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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)

1410

425

454

468

480

2512

3518

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.

Bands1

Area

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

Cite this article: FindLaw.com - Code of Federal Regulations Title 47. Telecommunication § 47.80.357 Working frequencies for Morse code and data transmission - last updated October 03, 2022 | https://codes.findlaw.com/cfr/title-47-telecommunication/cfr-sect-47-80-357/


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