UNITED STATES OF AMERICA
PROPOSALS FOR THE WORK OF THE CONFERENCE
Agenda Item 1.9: to revise frequencies and channeling arrangements of Appendix 17 to the Radio Regulations, in accordance with Resolution 351 (Rev.WRC-07), in order to implement new digital technologies for the maritime mobile service
Background Information: The introduction of new data exchange technologies[1] in the HF maritime mobile service is providing an alternative to narrow-band direct printing (NBDP) technology. According to the International Maritime Organization, current NBDP applications include maritime safety information (MSI) broadcasts, ship reporting, weather forecasts and business communications (e.g. fishing fleets), but remains part of the International Convention for the Safety of Life at Sea (SOLAS) requirements for vessels sailing in sea areas A3[2] and A4[3]. Since alternative data communication technologies for these functions are available, NBDP equipment use is in rapid decline. However, NBDP telegraphy remains essential for distress communications in the polar regions (sea area A4) where geostationary satellites cannot provide coverage and other terrestrial means of communication are unreliable.
The global maritime community intends to improve efficiency and flexibility in the HF maritime mobile service spectrum by designating certain assignable frequencies in Appendix 17 to data transmissions using new data exchange technologies. This proposal would:
1) modify Part A and B of RR Appendix 17 to promote the implementation of new digital technologies, while protecting existing applications;
2) significantly reduce the number of NBDP frequencies to those actually used for NBDP telegraphy and GMDSS (Appendix 15);
3) create a new NBDP core band and retain sufficient paired channels in the NBDP core bands to accommodate existing public services;
4) include the MSI frequencies in the NBDP core bands in order to show a clear indication and provide adequate protection;
5) specify bandwidth and channelling arrangements for new digital technologies in Appendix17. Recommendation ITU-R M.1798 describes two 3 kHz bandwidth systems and one wideband system using 10-20 kHz bandwidth. Therefore, the basic bandwidth for new digital technologies should be 3 kHz, and should allow use of multiple 3 kHz contiguous channels for wideband systems;
6) make efficient use of the spectrum, the frequency bands in Part A for new digital technologies should be adjusted to 3 kHz bandwidth channels, however allow for use of contiguous multiple 3 kHz channels for wideband system;
7) identifies paired channels for new digital frequencies for coast stations and ship stations;
8) allow for the use of the current NBDP bands for digital data transmissions, subject to not claiming protection from nor causing harmful interference to other stations in the maritime mobile service using NBDP technology until December 31, 2016;
9) make new digital data transmissions primary in the current NBDP bands effective January 1, 2017, though stations could use NBDP technology subject to not claiming protection from nor causing harmful interference to stations in the maritime mobile service using digital data transmissions;
10) re-designate the frequencies currently assignable to stations using facsimile, wide-band telegraphy and Morse telegraphy A1A/A1B to stations using data transmission without a transition period;
11) allow stations using wide-band telegraphy or Morse telegraphy A1A/A1B to continue on their currently assigned frequencies subject to not claiming protection from nor causing harmful interference to stations in the maritime mobile service using digital data transmissions;
12) not modify Appendix 25 radiotelephony bands, but would allow for the use of digital data transmissions in the radiotelephony bands in accordance with the Appendix 25 allotment plan, and
13) provide flexibility to administrations in portions of the bands 4MHz, 6MHz and 8MHz to assign new simplex radiotelephony frequencies in accordance with No.52.177, subject to not claiming protection from stations in the maritime mobile service using digital data transmissions.
Proposal:
MOD USA/AI 1.9/1
APPENDIX 17 (Rev.WRC-0712)
Frequencies and channelling arrangements in the
high-frequency bands for the maritime mobile service
(See Article 52)
PART A–Table of subdivided bands(WRC-0712)
In the Table, where appropriate[1], the assignable frequencies in a given band for each usage are:
- indicated by the lowest and highest frequency, in heavy type, assigned in that band;
- regularly spaced, the number of assignable frequencies (f.) and the spacing in kHz being indicated in italics.
Table of frequencies (kHz) to be used in the band between 4000 kHz and 27500 kHz
allocated exclusively to the maritime mobile service
Limits (kHz) / 4063 / 6200 / 8195 / 12230 / 16360 / 18780 / 22000 / 25070
Frequencies assignable toship stations for oceanographic data transmission
c) / 4063.3
to
4064.8
6 f.
0.3 kHz
Limits (kHz) / 4065 / 6200 / 8195 / 12230 / 16360 / 18780 / 22000 / 25070
Frequencies assignable toship stations for telephony, duplex operation
a) i) gg) / 4066.4
to
4144.4
27 f.
3 kHz / 6201.4
to
6222.4
8 f.
3 kHz / 8196.4
to
8292.4
33 f.
3 kHz / 12231.4
to
12351.4
41 f.
3 kHz / 16361.4
to
16526.4
56 f.
3 kHz / 18781.4
to
18823.4
15 f.
3 kHz / 22001.4
to
22157.4
53 f.
3 kHz / 25071.4
to
25098.4
10 f.
3 kHz
Limits (kHz) / 4146 / 6224 / 8294 / 12353 / 16528 / 18825 / 22159 / 25100
Table of frequencies (kHz) to be used in the band between 4000 kHz and 27500 kHz
allocated exclusively to the maritime mobile service (continued)
Limits (kHz) / 4146 / 6224 / 8294 / 12353 / 16528 / 18825 / 22159 / 25100
Frequencies assignable toship stations and coast stations for telephony, simplex operation
a) gg) / 4147.4
to
4150.4
2 f.
3 kHz / 6225.4
to
6231.4
3 f.
3 kHz / 8295.4
to
8298.4
2 f.
3 kHz / 12354.4
to
12366.4
5 f.
3 kHz / 16529.4
to
16547.4
7 f.
3 kHz / 18826.4
to
18844.4
7 f.
3 kHz / 22160.4
to
22178.4
7 f.
3 kHz / 25101.4
to
25119.4
7 f.
3 kHz
Limits (kHz) / 4152 / 6233 / 8300 / 12368 / 16549 / 18846 / 22180 / 25121
Frequencies assignable toship stations for wideband telegraphy, facsimile and special transmission systems Frequencies assignable toship stations for data transmissions
p) ee) / 4154
to
4170
5 f.
4 kHz
4 154.5
to
4 169.5
6 f.
3 kHz / 6235
to
6259
7 f.
4 kHz
6 235
to
6 259
9 f.
3 kHz / 8302
to
8338
10 f.
4 kHz
8 302
to
8 338
13 f.
3 kHz / 12370
to
12418
13 f.
4 kHz
12 370
to
12 418
17 f.
3 kHz / 16551
to
16615
17 f.
4 kHz
16 551.5
to
16 614.5
22 f.
3 kHz / 18848
to
18868
6 f.
4 kHz
18 847.5
to
18 868.5
8 f.
3 kHz / 22182
to
22238
15 f.
4 kHz
22 181.5
to
22 238.5
20 f.
3 kHz / 25123
to
25159
10 f.
4 kHz
25 123
to
25 138
6 f.
3 kHz
Limits (kHz) / 4172 / 6261 / 8340 / 12420 / 16617 / 18870 / 22240 / 2516139.25
Frequencies assignable toship stations for oceanographic data transmission
c) p) / 6261.3
to
6262.5
5 f.
0.3 kHz / 8340.3
to
8341.5
5 f.
0.3 kHz / 12420.3
to
12421.5
5 f.
0.3 kHz / 16617.3
to
16618.5
5 f.
0.3 kHz / 22240.3
to
22241.5
5 f.
0.3 kHz
Limits (kHz) / 4172 / 6262.75 / 8341.75 / 12421.75 / 16618.75 / 18870 / 22241.75 / 25139.5
Frequencies assignable to ship stations for data transmission
d) p) aa) bb) cc) / 18 871.5
1 f.
3 kHz
Limits (kHz) / 4172 / 6262.75 / 8341.75 / 12421.75 / 16618.75 / 188703.25 / 22241.75 / 2516139.25
Frequencies (paired) assignable to ship stations for narrow-band direct-printing (NBDP) telegraphy and data transmission systems at speeds not exceeding 100Bd for FSK and 200Bd for PSK
d) j) m) p) / 4172.5
to
4181.54 178
1812 f.
0.5 kHz / 6263
to
62756 268.5
2512 f.
0.5 kHz / 18873.5
to
18880
14 f.
05 kHz
Limits (kHz) / 418178.725 / 627568.75 / 8341.75 / 12421.75 / 16618.75 / 188780.75 / 22241.75 / 2516139.25
Limits (kHz) / 4178.25 / 6268.75 / 8341.75 / 12421.75 / 16618.75 / 18880.75 / 22241.75 / 25139.5
Frequencies assignable to ship stations for data transmission
d) p) aa) bb) cc) / 4 180
1 f.
3 kHz / 6 270.5
to
6 273.5
2 f.
3 kHz / 18 883.5
to
18 886.5
2 f.
3 kHz
Limits (kHz) / 4181.75 / 6275 / 8341.75 / 12421.75 / 16618.75 / 18889 / 22241.75 / 25139.5
Calling frequencies assignable to ship stations for A1A or A1B Morse telegraphyFrequencies assignable to ship stations for data transmission
gm) p) / 4 183.25
1 f.
3 kHz / 6 276.5
to
6 279.5
2 f.
3 kHz
Limits (kHz) / 41864.75 / 62801.75 / 8341.75 / 12421.75 / 16618.75 / 1887089 / 22241.75 / 2516139.25
Frequencies (paired) assignable to ship stations for NBDP telegraphy and data transmission systems at speeds not exceeding 100Bd for FSK and 200Bd for PSKFrequencies assignable to ship stations for data transmission
d) m) p) aa) bb) cc) / 62812.5
to
6284.5
81 f.
0.53 kHz
Limits (kHz) / 41864.75 / 6284.75 / 8341.75 / 12421.75 / 16618.75 / 1887089 / 22241.75 / 2516139.25
Table of frequencies (kHz) to be used in the band between 4000 kHz and 27500 kHz
allocated exclusively to the maritime mobile service (continued)
Limits (kHz) / 41864.75 / 6284.75 / 8341.75 / 12421.75 / 16618.75 / 1887089 / 22241.75 / 2516139.25
Working frequencies assignable to ship stations for A1A or A1B Morse telegraphyFrequencies assignable to ship stations for data transmission
e) fm) p) / 41876.25
to
42021.25
316 f.
0.53 kHz / 6285.5
to
6300297.5
315 f.
0.53 kHz / 83423.25
to
83654.25
488 f.
0.53 kHz / 124223.75
to
124764.75
11018 f.
0.53 kHz / 1661921
to
166831
12921 f.
0.53 kHz / 222423.5
to
222796.5
7512 f.
0.53 kHz / 25161.5
to
25171
20 f.
0.5 kHz /
(WRC-07)
Limits (kHz) / 4202.275 / 6300299.25 / 8365.75 / 12476.75 / 16683.25 / 1887089 / 222798.25 / 2517139.25
Calling frequencies assignable to ship stations for A1A or A1B Morse telegraphyFrequencies assignable to ship stations for data transmission
g) m) p) / 8 368
to
8 374
3 f.
3 kHz / 22 279.5
to
22 282.5
2 f.
3 kHz
Limits (kHz) / 4202.275 / 6300299.25 / 83706.725 / 12476.75 / 16683.25 / 1887089 / 22284.25 / 2517239.75
Working frequencies assignable to ship stations for A1A or A1B Morse telegraphy
e) f) p) / 8371
to
8376
11 f.
0.5 kHz
Limits (kHz) / 4202.25 / 6300.25 / 8376.25 / 12476.75 / 16683.25 / 18870 / 22284.25 / 25172.75
Frequencies (paired) assignable to ship stations for NBDP telegraphy and data transmission systems at speeds not exceeding 100bauds for FSK and 200bauds for PSK
d) j) m) p) / 8376.5
to
839683.5
4015 f.
0.5 kHz / 12477
to
12549.5
146 f.
0.5 kHz / 16683.5
to
16733.5
101 f.
0.5 kHz / 18870.5
to
18892.5
45 f.
0.5 kHz / 22284.5
to
22351.5
135 f.
0.5 kHz / 25173
to
25192.5
40 f.
0.5 kHz
Limits (kHz) / 4202.275 / 6300299.25 / 839683.275 / 12549476.75 / 1673683.725 / 1889289.75 / 22351284.725 / 25192.75139.5
Frequencies assignable to ship stations for data transmission
d) p) aa) bb) cc) / 8 385.5
to
8 394.5
4 f.
3 kHz / 22 286
to
22 289
2 f.
3 kHz
Limits (kHz) / 4202.75 / 6299 / 8396.25 / 12476.75 / 16683.25 / 18889 / 22290.75 / 25139.5
Frequencies (paired) assignable to ship stations for NBDP telegraphy and data transmission systems at speeds not exceeding 100bauds for FSK and 200bauds for PSK
d) j) / 12477
to
12 522.5
92 f.
0.5 kHz / 16683.5
to
16698.5
31 f.
0.5 kHz / 22 291
to
22 297
13 f.
0.5 kHz
Limits (kHz) / 4202.75 / 6299 / 8396.25 / 12522.75 / 16698.75 / 18889 / 22297.25 / 25139.5
Limits (kHz) / 4202.75 / 6299 / 8396.25 / 12522.75 / 16698.75 / 18889 / 22297.25 / 25139.5
Frequencies assignable to ship stations for data transmission
d) p) aa) bb) cc) / 12 524.25
to
12 548.25
9 f.
3 kHz / 16 700.5
to
16 733.5
12 f.
3 kHz / 22 299.5
to
22 350.5
18 f.
3 kHz
Limits (kHz) / 4202.75 / 6299 / 8396.25 / 12549.75 / 16735 / 18889 / 22352.5 / 25139.5
Calling frequencies assignable to ship stations for A1A or A1B Morse telegraphyFrequencies assignable to ship stations for data transmission
g) m) p) / 12 551.25
to
12 554.25
2 f.
3 kHz / 16 736.5
to
16 739.5
2 f.
3 kHz
Limits (kHz) / 4202.275 / 6300299.25 / 8396.25 / 125545.75 / 1673841.75 / 1889289.75 / 223512.75 / 2519239.75
Frequencies (paired) assignable to ship stations for NBDP telegraphy and data transmission systems at speeds not exceeding 100bauds for FSK and 200bauds for PSKFrequencies assignable to ship stations for data transmission
d) m) p) aa) bb) cc) / 125557.25
to
1255960.25
102 f.
0.53 kHz / 1673942.5
to
16784.5
9215 f.
0.53 kHz
Limits (kHz) / 4202.275 / 6300299.25 / 8396.25 / 1255961.75 / 167846.75 / 1889289.75 / 223512.75 / 2519239.75
Table of frequencies (kHz) to be used in the band between 4000 kHz and 27500 kHz
allocated exclusively to the maritime mobile service (continued)