47 C.F.R. § 80.361
Frequencies for narrow-band direct-printing (NBDP), radioprinter and data transmissions.
Cite as 47 C.F.R. § 80.361 (2026)
(a)
Paired channels.
The following frequencies are available for assignment to public coast stations for narrow-band direct-printing (NBDP) and data transmissions. The paired ship frequencies are available for use by authorized ship stations for NBDP and data transmissions.
Ch. no.
Paired frequencies for NBDP and data transmissions (kHz)
4 MHz
6 MHz
8 MHz
12 MHz
16 MHz
18/19 MHz
22 MHz
25/26 MHz
Coast
Ship
Coast
Ship
Coast
Ship
Coast
Ship
Coast
Ship
Coast
Ship
Coast
Ship
Coast
Ship
1
4210.5
4172.5
6314.5
6263.0
12579.5
12477.0
16807.0
16683.5
19681.0
18870.5
22376.5
22284.5
26101.0
25173.0
2
4211.0
4173.0
6315.0
6263.5
8417.0
8377.0
12580.0
12477.5
16807.5
16684.0
19681.5
18871.0
22377.0
22285.0
26101.5
25173.5
3
4211.5
4173.5
6315.5
6264.0
8417.5
8377.5
12580.5
12478.0
16808.0
16684.5
19682.0
18871.5
22377.5
22285.5
26102.0
25174.0
4
4212.0
4174.0
6316.0
6264.5
8418.0
8378.0
12581.0
12478.5
16808.5
16685.0
19682.5
18872.0
22378.0
22286.0
26102.5
25174.5
5
4212.5
4174.5
6316.5
6265.0
8418.5
8378.5
12581.5
12479.0
16809.0
16685.5
19683.0
18872.5
22378.5
22286.5
26103.0
25175.0
6
4213.0
4175.0
6317.0
6265.5
8419.0
8379.0
12582.0
12479.5
16809.5
16686.0
19683.5
18873.0
22379.0
22287.0
26103.5
25175.5
7
4213.5
4175.5
6317.5
6266.0
8419.5
8379.5
12582.5
12480.0
16810.0
16686.5
19684.0
18873.5
22379.5
22287.5
26104.0
25176.0
8
4214.0
4176.0
6318.0
6266.5
8420.0
8380.0
12583.0
12480.5
16810.5
16687.0
19684.5
18874.0
22380.0
22288.0
26104.5
25176.5
9
4214.5
4176.5
6318.5
6267.0
8420.5
8380.5
12583.5
12481.0
16811.0
16687.5
19685.0
18874.5
22380.5
22288.5
26105.0
25177.0
10
4215.0
4177.0
6319.0
6267.5
8421.0
8381.0
12584.0
12481.5
16811.5
16688.0
19685.5
18875.0
22381.0
22289.0
26105.5
25177.5
11
8421.5
8381.5
12584.5
12482.0
16812.0
16688.5
19686.0
18875.5
22381.5
22289.5
26106.0
25178.0
12
4215.5
4178.0
6319.5
6268.5
8422.0
8382.0
12585.0
12482.5
16812.5
16689.0
19686.5
18876.0
22382.0
22290.0
26106.5
25178.5
13
4216.0
4178.5
6320.0
6269.0
8422.5
8382.5
12585.5
12483.0
16813.0
16689.5
19687.0
18876.5
22382.5
22290.5
26107.0
25179.0
14
4216.5
4179.0
6320.5
6269.5
8423.0
8383.0
12586.0
12483.5
16813.5
16690.0
19687.5
18877.0
22383.0
22291.0
26107.5
25179.5
15
4217.0
4179.5
6321.0
6270.0
8423.5
8383.5
12586.5
12484.0
16814.0
16690.5
19688.0
18877.5
22383.5
22291.5
26108.0
25180.0
16
4217.5
4180.0
6321.5
6270.5
8424.0
8384.0
12587.0
12484.5
16814.5
16691.0
19688.5
18878.0
22384.0
22292.0
26108.5
25180.5
17
4218.0
4180.5
6322.0
6271.0
8424.5
8384.5
12587.5
12485.0
16815.0
16691.5
19689.0
18878.5
22384.5
22292.5
26109.0
25181.0
18
6322.5
6271.5
8425.0
8385.0
12588.0
12485.5
16815.5
16992.0
19689.5
18879.0
22385.0
22293.0
26109.5
25181.5
19
6323.0
6272.0
8425.5
8385.5
12588.5
12486.0
16816.0
16692.5
19690.0
18879.5
22385.5
22293.5
26110.0
25182.0
20
6323.5
6272.5
8426.0
8386.0
12589.0
12486.5
16816.5
16693.0
19690.5
18880.0
22386.0
22294.0
26110.5
25182.5
21
6324.0
6273.0
8426.5
8386.5
12589.5
12487.0
16817.0
16693.5
19691.0
18880.5
22386.5
22294.5
22
6324.5
6273.5
8427.0
8387.0
12590.0
12487.5
16817.5
16694.0
19691.5
18881.0
22387.0
22295.0
23
6325.0
6274.0
8427.5
8387.5
12590.5
12488.0
16818.0
16694.5
22387.5
22295.5
24
6325.5
6274.5
8428.0
8388.0
12591.0
12488.5
22388.0
22296.0
25
6326.0
6275.0
8428.5
8388.5
12591.5
12489.0
16818.5
16695.5
22388.5
22296.5
26
6326.5
6275.5
8429.0
8389.0
12592.0
12489.5
16819.0
16696.0
22389.0
22297.0
27
6327.0
6281.0
8429.5
8389.5
12592.5
12490.0
16819.5
16696.5
22389.5
22297.5
28
6327.5
6281.5
8430.0
8390.0
12593.0
12490.5
16820.0
16697.0
22390.0
22298.0
29
6328.0
6282.0
8430.5
8390.5
12593.5
12491.0
16820.5
16697.5
22390.5
22298.5
30
8431.0
8391.0
12594.0
12491.5
16821.0
16698.0
22391.0
22299.0
31
8431.5
8391.5
12594.5
12492.0
16821.5
16698.5
22391.5
22299.5
32
8432.0
8392.0
12595.0
12492.5
16822.0
16699.0
22392.0
22300.0
33
8432.5
8392.5
12595.5
12493.0
16822.5
16699.5
22392.5
22300.5
34
8433.0
8393.0
12596.0
12493.5
16823.0
16700.0
22393.0
22301.0
35
12596.5
12494.0
16823.5
16700.5
22393.5
22301.5
36
12597.0
12494.5
16824.0
16701.0
22394.0
22302.0
37
12597.5
12495.0
16824.5
16701.5
22394.5
22302.5
38
12598.0
12495.5
16825.0
16702.0
22395.0
22303.0
39
12598.5
12496.0
16825.5
16702.5
22395.5
22303.5
40
12599.0
12496.5
16826.0
16703.0
22396.0
22304.0
41
12599.5
12497.0
16826.5
16703.5
22396.5
22304.5
42
12600.0
12497.5
16827.0
16704.0
22397.0
22305.0
43
12600.5
12498.0
16827.5
16704.5
22397.5
22305.5
44
12601.0
12498.5
16828.0
16705.0
22398.0
22306.0
45
12601.5
12499.0
16828.5
16705.5
22398.5
22306.5
46
12602.0
12499.5
16829.0
16706.0
22399.0
22307.0
47
12602.5
12500.0
16829.5
16706.5
22399.5
22307.5
48
12603.0
12500.5
16830.0
16707.0
22400.0
22308.0
49
12603.5
12501.0
16830.5
16707.5
22400.5
22308.5
50
12604.0
12501.5
16831.0
16708.0
22401.0
22309.0
51
12604.5
12502.0
16831.5
16708.5
22401.5
22309.5
52
12605.0
12502.5
16832.0
16709.0
22402.0
22310.0
53
12605.5
12503.0
16832.5
16709.5
22402.5
22310.5
54
12606.0
12503.5
16833.0
16710.0
22403.0
22311.0
55
12606.5
12504.0
16833.5
16710.5
22403.5
22311.5
56
12607.0
12504.5
16834.0
16711.0
22404.0
22312.0
57
12607.5
12505.0
16834.5
16711.5
22404.5
22312.5
58
12608.0
12505.5
16835.0
16712.0
22405.0
22313.0
59
12608.5
12506.0
16835.5
16712.5
22405.5
22313.5
60
12609.0
12506.5
16836.0
16713.0
22406.0
22314.0
61
12609.5
12507.0
16836.5
16713.5
22406.5
22314.5
62
12610.0
12507.5
16837.0
16714.0
22407.0
22315.0
63
12610.5
12508.0
16837.5
16714.5
22407.5
22315.5
64
12611.0
12508.5
16838.0
16715.0
22408.0
22316.0
65
12611.5
12509.0
16838.5
16715.5
22408.5
22316.5
66
12612.0
12509.5
16839.0
16716.0
22409.0
22317.0
67
12612.5
12510.0
16839.5
16716.5
22409.5
22317.5
68
12613.0
12510.5
16400.0
16717.0
22410.0
22318.0
69
12613.5
12511.0
16400.5
16717.5
22410.5
22318.5
70
12614.0
12511.5
16411.0
16718.0
22411.0
22319.0
71
12614.5
12512.0
16841.5
16718.5
22411.5
22319.5
72
12615.0
12512.5
16842.0
16719.0
22412.0
22320.0
73
12615.5
12513.0
16842.5
16719.5
22412.5
22320.5
74
12616.0
12513.5
16843.0
16720.0
22413.0
22321.0
75
12616.5
12514.0
16843.5
16720.5
22413.5
22321.5
76
12617.0
12514.5
16844.0
16721.0
22414.0
22322.0
77
12617.5
12515.0
16844.5
16721.5
22414.5
22322.5
78
12618.0
12515.5
16845.0
16722.0
22415.0
22323.0
79
12618.5
12516.0
16845.5
16722.5
22415.5
22323.5
80
12619.0
12516.5
16846.0
16723.0
22416.0
22324.0
81
12619.5
12517.0
16846.5
16723.5
22416.5
22324.5
82
12620.0
12517.5
16847.0
16724.0
22417.0
22325.0
83
12620.5
12518.0
16847.5
16724.5
22417.5
22325.5
84
12621.0
12518.5
16848.0
16725.0
22418.0
22326.0
85
12621.5
12519.0
16848.5
16725.5
22418.5
22326.5
86
12622.0
12519.5
16849.0
16726.0
22419.0
22327.0
87
16849.5
16726.5
22419.5
22327.5
88
12622.5
12520.5
16850.0
16727.0
22420.0
22328.0
89
12623.0
12521.0
16850.5
16727.5
22420.5
22328.5
90
12623.5
12521.5
16851.0
16728.0
22421.0
22329.0
91
12624.0
12522.0
16851.5
16728.5
22421.5
22329.5
92
12624.5
12522.5
16852.0
16729.0
22422.0
22330.0
93
12625.0
12523.0
16852.5
16729.5
22422.5
22330.5
94
12625.5
12523.5
16853.0
16730.0
22423.0
22331.0
95
12626.0
12524.0
16853.5
16730.5
22423.5
22331.5
96
12626.5
12524.5
16854.0
16731.0
22424.0
22332.0
97
12627.0
12525.0
16854.5
16731.5
22424.5
22332.5
98
12627.5
12525.5
16855.0
16732.0
22425.0
22333.0
99
12628.0
12526.0
16855.5
16732.5
22425.5
22333.5
100
12628.5
12526.5
16856.0
16733.0
22426.0
22334.0
101
12629.0
12527.0
16856.5
16733.5
22426.5
22334.5
102
12629.5
12527.5
16857.0
16739.0
103
12630.0
12528.0
16857.5
16739.5
104
12630.5
12528.5
16858.0
16740.0
105
12631.0
12529.0
16858.5
16740.5
106
12631.5
12529.5
16859.0
16741.0
107
12632.0
12530.0
16859.5
16741.5
108
16860.0
16742.0
109
16860.5
16742.5
110
16861.0
16743.0
111
16861.5
16743.5
112
16862.0
16744.0
113
16862.5
16744.5
114
16863.0
16745.0
115
16863.5
16745.5
116
16864.0
16746.0
117
16864.5
16746.5
118
16865.0
16747.0
119
16865.5
16747.5
120
16866.0
16748.0
121
16866.5
16748.5
122
16867.0
16749.0
123
16867.5
16749.5
124
16868.0
16750.0
125
16868.5
16750.5
126
16869.0
16751.0
127
16869.5
16751.5
128
16870.0
16752.0
129
16870.5
16752.5
130
16871.0
16753.0
131
16871.5
16753.5
132
16872.0
16754.0
(b) The following table describes the frequencies and Channel Series with F1B, J2B, or J2D emission which are assignable to ship stations for NBDP and data transmissions with other ship stations and public coast stations. Public coast stations may receive only on these frequencies.
Non-Paired NBDP Channels (kHz)
Channel series:
1
4202.5
6300.5
8396.5
12560.0
16785.0
18893.0
22352.0
25193.0
2
4203.0
6301.0
8397.0
12560.5
16785.5
18893.5
22352.5
25193.5
3
4203.5
6301.5
8397.5
12561.0
16786.0
18894.0
22353.0
25194.0
4
4204.0
6302.0
8398.0
12561.5
16786.5
18894.5
22353.5
25194.5
5
4204.5
6302.5
8398.5
12562.0
16787.0
18895.0
22354.0
25195.0
6
4205.0
6303.0
8399.0
12562.5
16787.5
18895.5
22354.5
25195.5
7
4205.5
6303.5
8399.5
12563.0
16788.0
18896.0
22355.0
25196.0
8
4206.0
6304.0
8400.0
12563.5
16788.5
18896.5
22355.5
25196.5
9
4206.5
6304.5
8400.5
12564.0
16789.0
18897.0
22356.0
25197.0
10
4207.0
6305.0
8401.0
12564.5
16789.5
18897.5
22356.5
25197.5
11
6305.5
8401.5
12565.0
16790.0
18898.0
22357.0
25198.0
12
6306.0
8402.0
12565.5
16790.5
22357.5
25198.5
13
6306.5
8402.5
12566.0
16791.0
22358.0
25199.0
14
6307.0
8403.0
12566.5
16791.5
22358.5
25199.5
15
6307.5
8403.5
12567.0
16792.0
22359.0
25200.0
16
6308.0
8404.0
12567.5
16792.5
22359.5
25200.5
17
6308.5
8404.5
12568.0
16793.0
22360.0
25201.0
18
6309.0
8405.0
12568.5
16793.5
22360.5
25201.5
19
6309.5
8405.5
12569.0
16794.0
22361.0
25202.0
20
6310.0
8406.0
12569.5
16794.5
22361.5
25202.5
21
6310.5
8406.5
12570.0
16795.0
22362.0
25203.0
22
6311.0
8407.0
12570.5
16795.5
22362.5
25203.5
23
6311.5
8407.5
12571.0
16796.0
22363.0
25204.0
24
8408.0
12571.5
16796.5
22363.5
25204.5
25
8408.5
12572.0
16797.0
22364.0
25205.0
26
8409.0
12572.5
16797.5
22364.5
25205.5
27
8409.5
12573.0
16798.0
22365.0
25206.0
28
8410.0
12573.5
16798.5
22365.5
25206.5
29
8410.5
12574.0
16799.0
22366.0
25207.0
30
8411.0
12574.5
16799.5
22366.5
25207.5
31
8411.5
12575.0
16800.0
22367.0
25208.0
32
8412.0
12575.5
16800.5
22367.5
33
8412.5
12576.0
16801.0
22368.0
34
8413.0
12576.5
16801.5
22368.5
35
8413.5
16802.0
22369.0
36
8414.0
16802.5
22369.5
37
16803.0
22370.0
38
16803.5
22370.5
39
16804.0
22371.0
40
22371.5
41
22372.0
42
22372.5
43
22373.0
44
22373.5
45
22374.0
(c)
Distress and calling.
The frequencies 2174.5 kHz, 4177.5 kHz, 6268.0 kHz, 8376.5 kHz, 12520.0 kHz, and 16695.0 kHz may be used for NBDP and data transmissions by coast and ship stations on a simplex basis for distress and safety purposes.
(d) The frequencies in the 156-162 MHz band available for assignment to public coast stations that are contained in § 80.371(c) of this part are also available for radioprinter and data communications between ship and coast stations using F1B, F2B, F1D, or F2D emission.
[51 FR 31213, Sept. 2, 1986, as amended at 56 FR 9890, Mar. 8, 1991; 57 FR 43407, Sept. 21, 1992; 58 FR 16504, Mar. 29, 1993; 68 FR 46969, Aug. 7, 2003]
- Cross-references to the CFR
- 80.371