ATTACHMENT 1 
to FCC Public Notice DA 10-1408 
 
 
Recommendations approved at  
28 July 2010 Meeting of   
the Advisory Committee for  
the 2012 World Radiocommunication Conference 
 
 
 
 2
 
 
 
 
 
 
 
 
 
 
Maritime Aeronautical and Radar Services 
 
 3
DOCUMENT WAC/083(28.07.10) 
 
 
 
WAC Informal Working Group (IWG)-1 
 
UNITED STATES OF AMERICA 
 
DRAFT PROPOSALS FOR THE WORK OF THE CONFERENCE 
 
Agenda Item 1.14:  to consider requirements for new applications in the radiolocation service and 
review allocations or regulatory provisions for implementation of the radiolocation service in the range 
30-300 MHz, in accordance with Resolution 611 (WRC-07) 
 
Background Information:  Resolution 611 (WRC-07) asks WRC-12 to determine if any new 
radiolocation service allocations or applications in a portion of 30-300 MHz, with bandwidth no larger 
than 2 MHz, are compatible with existing services and applications in these bands.  The 
Resolution recognizes that it is important to ensure radiolocation radars can be operated compatibly with 
the existing primary services having allocations in the portions of the VHF band.   The ITU-R has studied 
technical characteristics, protection criteria, and other factors to determine whether radiolocation systems 
can operate compatibly with systems operating in accordance with the Table of Frequency Allocations in 
services in the 30-300 MHz frequency range.  
 
Based on contributions to ITU meetings and other regional groups, it appears that the primary range of 
interest is 154-156 MHz for a new radar allocation for space object detection purposes. 
 
The 30-300 MHz band is allocated to and used by a wide variety of services, including the fixed, mobile, 
aeronautical mobile (R), aeronautical radionavigation, broadcasting, and amateur services, as well as a 
range of space services.  A review of the FCC’s licensing database for the frequency band 150-174 MHz 
band shows over 176,000 active licenses.  In the 154-156 MHz band alone, there are over 70,000 active 
licenses.  The United States also has a large number of LMR systems operating in portions of the VHF 
band that are not part of the FCC licensing database.  This frequency band has favorable propagation 
which allows implementation of systems with fewer base stations and hence a lower overall cost.  
Additionally, the maritime mobile service utilizes frequencies immediately above 156 MHz, and there are 
space service allocations in the 137-138 MHz, 148-149.9 MHz and 149.9-150.05 MHz bands. 
 
Contributions to ITU meetings have not persuasively demonstrated compatibility with primary services in 
or adjacent to the 154-156 MHz range, nor are future contributions likely to demonstrate compatibility 
with primary services elsewhere in the range 30-300 MHz.  Further, space object detection is already 
accommodated in the worldwide harmonized radiolocation allocation at 420-450 MHz.  The UHF band is 
more suitable for this purpose because of a lower relative likelihood of transmissions being refracted back 
toward the earth during ionospheric disturbances. 
 
 
 4
Proposal: 
 
ARTICLE  5 
 
Frequency Allocations 
 
Section IV  –  Table of Frequency Allocations 
 
 
NOC USA/AI1.14/1 
 
Reason:   No change to the Radio Regulations is necessary or desirable.  The application of space object 
detection is already accommodated at a more suitable frequency range, and compatibility with primary 
services has not been demonstrated.   
 
SUP  USA/AI1.14/2 
RESOLUTION 611 (WRC-07) 
Use of a portion of the VHF band by the radiolocation service 
 
Reason:  Consequential to completion of Agenda Item 1.14 at WRC-12. 
 
 
____________________ 
 
 
 5
DOCUMENT WAC/084(28.07.10) 
 
 
WAC Informal Working Group (IWG)-1 
 
Modifications to NTIA’s Proposal on 
Agenda Item 1.9  
 
Preparation for ITU Radiocommunication Conferences 
 
 
 
UNITED STATES OF AMERICA 
DRAFT 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).  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) significantly reduce the number of NBDP frequencies to those actually used for NBDP telegraphy 
and the GMDSS/NBDP core frequencies (Appendix 15); 
2) 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, 2014; 
3) make new digital data transmissions primary in the current NBDP bands effective January 1, 
2015, 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; 
4) 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; 
5) neither specify nor limit the bandwidth of new digital transmissions;  
                                                      
1
 See Recommendation ITU-R M.1798 Characteristics of HF radio equipment for the exchange of digital data and 
electronic mail in the maritime mobile service 
 
 6
6) 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; 
7) not modify Appendix 25 radiotelephony bands, but would allow for the use of digitally 
modulated emissions digital data transmissions in the radiotelephony bands in accordance with 
the  Appendix 25 allotment plan; and 
8) provide some flexibility to administrations in portions of the bands 4 MHz, 6 MHz and 8 MHz 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-0312) 
Frequencies and channelling arrangements in the 
high-frequency bands for the maritime mobile service 
(See Article 52) 
PART  A  –  Table of subdivided bands     (WRC-0312) 
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. 
                                                      
1
  Within the non-shaded boxes. 
 
 7
 
Table of frequencies (kHz) to be used in the band between 4 000 kHz and 27 500 kHz 
allocated exclusively to the maritime mobile service 
Table of frequencies (kHz) to be used in the band between 4 000 kHz and 27 500 kHz 
allocated exclusively to the maritime mobile service (continued ) 
Band (MHz) 4 6 8 12 16 18/19 22 25/26 
Limits (kHz) 4 146 6 224 8 294 12 353 16 528 18 825 22 159 25 100 
Frequencies assignable 
to ship stations and coast 
stations for telephony, 
simplex operation  
 a) hh) 
4 147.4 
to 
4 150.4 
 
2 f. 
3 kHz 
6 225.4 
to 
6 231.4 
 
3 f. 
3 kHz 
8 295.4 
to 
8 298.4 
 
2 f. 
3 kHz 
12 354.4
to 
12 366.4
 
5 f. 
3 kHz 
16 529.4
to 
16 547.4
 
7 f. 
3 kHz 
18 826.4 
to 
18 844.4 
 
7 f. 
3 kHz 
22 160.4
to 
22 178.4
 
7 f. 
3 kHz 
25 101.4
to 
25 119.4
 
7 f. 
3 kHz 
Limits (kHz) 4 152 6 233 8 300 12 368 16 549 18 846 22 180 25 121 
Frequencies assignable 
to ship stations for 
wide-band telegraphy, 
facsimile and special 
transmission systems 
Frequencies assignable to 
ship stations for  data 
transmission p) ee) 
4 154 
to 
4 170 
 
5 f. 
4 kHz 
6 235 
to 
6 259 
 
7 f. 
4 kHz 
8 302 
to 
8 338 
 
10 f. 
4 kHz 
12 370 
to 
12 418 
 
13 f. 
4 kHz 
16 551 
to 
16 615 
 
17 f. 
4 kHz 
18 848 
to 
18 868 
 
6 f. 
4 kHz 
22 182 
to 
22 238 
 
15 f. 
4 kHz 
25 123 
to 
25 159 
 
10 f. 
4 kHz 
Limits (kHz) 4 172 6 261 8 340 12 420 16 617 18 870 22 240 25 161.25 
Frequencies assignable 
to ship stations for 
oceanographic data 
transmission c) p) 
 
 6 261.3 
to 
6 262.5 
 
5 f. 
0.3 kHz 
8 340.3 
to 
8 341.5 
 
5 f. 
0.3 kHz 
12 420.3
to 
12 421.5
 
5 f. 
0.3 kHz 
16 617.3
to 
16 618.5
 
5 f. 
0.3 kHz 
 22 240.3
to 
22 241.5
 
5 f. 
0.3 kHz 
 
Limits (kHz) 4 172 6 262.75 8 341.75 12 421.75 16 618.75 18 870 22 241.75 25 161.25 
Band (MHz) 4 6 8 12 16 18/19 22 25/26 
Limits (kHz) 4 063 6 200 8 195 12 230 16 360 18 780 22 000 25 070 
Frequencies assignable 
to ship stations for 
oceanographic data 
transmission c) 
4 063.3 
to 
4 064.8 
 
6 f. 
0.3 kHz 
       
Limits (kHz) 4 065 6 200 8 195 12 230 16 360 18 780 22 000 25 070 
Frequencies assignable 
to ship stations for 
telephony, duplex 
operation a) i) hh) 
4 066.4 
to 
4 144.4 
 
27 f. 
3 kHz 
6 201.4 
to 
6 222.4 
 
8 f. 
3 kHz 
8 196.4 
to 
8 292.4 
 
33 f. 
3 kHz 
12 231.4
to 
12 351.4
 
41 f. 
3 kHz 
16 361.4
to 
16 526.4
 
56 f. 
3 kHz 
18 781.4 
to 
18 823.4 
 
15 f. 
3 kHz 
22 001.4
to 
22 157.4
 
53 f. 
3 kHz 
25 071.4
to 
25 098.4
 
10 f. 
3 kHz 
Limits (kHz) 4 146 6 224 8 294 12 353 16 528 18 825 22 159 25 100 
 
 8
Frequencies assignable to 
ship stations for data 
transmission d)  p) aa) 
bb) cc) 
        
Limits (kHz) 4 175.25 6 266.25 8 341.75 12 421.75 16 618.75 18 870 22 241.75 25 161.25 
Frequencies (paired) 
assignable to ship stations 
for narrow-band direct-
printing (NBDP) 
telegraphy and data 
transmission systems at 
speeds not exceeding 
100 Bd for FSK and 
200 Bd for PSK 
 d) j) m) p) 
4 172.56 
to 
4 181.578 
 
185 f. 
0.5 kHz 
6 2636.5
to 
6 275.568.5
 
25 f. 
0.5 kHz 
      
Limits (kHz) 4 178.25 6 268.75 8 341.75 12 421.75 16 618.75 18 870 22 241.75 25 161.25 
Frequencies assignable to 
ship stations for  data 
transmission d) p) aa) 
bb) cc)  
 
        
Limits (kHz) 4 181.75 6 275.75 8 341.75 12 421.75 16 618.75 18 870 22 241.75 25 161.25 
Table of frequencies (kHz) to be used in the band between 4 000 kHz and 27 500 kHz 
allocated exclusively to the maritime mobile service (continued ) 
Band (MHz) 4 6 8 12 16 18/19 22 25/26 
Limits (kHz) 4 181.75 6 275.75 8 341.75 12 421.75 16 618.75 18 870 22 241.75 25 161.25 
Calling frequencies 
assignable to ship stations 
for A1A or A1B Morse 
telegraphy Frequencies 
assignable to ship stations 
for data transmission  g) p) 
m) 
        
Limits (kHz) 4 186.75 6 280.75 8 341.75 12 421.75 16 618.75 18 870 22 241.75 25 161.25 
Frequencies (paired) 
assignable to ship stations 
for NBDP telegraphy and 
data transmission systems 
at speeds not exceeding 
100 Bd for FSK and 
200 Bd for PSK 
Frequencies assignable to 
ship stations for data 
transmission   
 d) m) p) aa) bb) cc) 
 6 281  
to 
6 284.5 
 
8 f. 
0.5 kHz 
      
Limits (kHz) 4 186.75 6 284.75 8 341.75 12 421.75 16 618.75 18 870 22 241.75 25 161.25 
Working frequencies 
assignable to ship stations 
4 187 
to 
6 285 
to 
8 342 
to 
12 422 
to 
16 619 
to 
 22 242 
to 
25 161.5
to 
 
 9
for A1A or A1B Morse 
telegraphy e) f) 
Frequencies assignable to 
ship stations for data 
transmission   m) p) 
4 202 
 
31 f. 
0.5 kHz 
6 300 
 
31 f. 
0.5 kHz 
8 365.5 
 
48 f. 
0.5 kHz 
12 476.5
 
110 f. 
0.5 kHz 
16 683 
 
129 f. 
0.5 kHz 
22 279 
 
75 f. 
0.5 kHz 
25 171 
 
20 f. 
0.5 kHz 
Limits (kHz) 4 202.25 6 300.25 8 365.75 12 476.75 16 683.25 18 870 22 279.25 25 171.25 
Calling frequencies 
assignable to ship stations 
for A1A or A1B Morse 
telegraphy  Frequencies 
assignable to ship stations 
for data transmission g) p) 
m) 
        
Limits (kHz) 4 202.25 6 300.25 8 370.75 12 476.75 16 683.25 18 870 22 284.25 25 172.75 
Working frequencies 
assignable to ship stations 
for A1A or A1B Morse 
telegraphy  Frequencies 
assignable to ship stations 
for data transmission   e) f) 
p) m) 
  8 371 
to 
8 376 
 
11 f. 
0.5 kHz 
     
Limits (kHz) 4 202.25 6 300.25 8 376.25 12 476.75 16 683.25 18 870 22 284.25 25 172.75 
 
Table of frequencies (kHz) to be used in the band between 4 000 kHz and 27 500 kHz 
allocated exclusively to the maritime mobile service (continued)) 
Band (MHz) 4 6 8 12 16 18/19 22 25/26 
Limits (kHz) 4 202.25 6 300.25 8 376.25 12 476.75 16 683.25 18 870 22 284.25 25 172.75 
Frequencies (paired) 
assignable to ship stations 
for NBDP telegraphy and 
data transmission systems 
at speeds not exceeding 
100 bauds for FSK and 
200 bauds for PSK  
 d) j) m) p) 
  8 376.5 
to 
8 39678.5
 
405 f. 
0.5 kHz 
12 477 
to 
12 549.5
 
146 f. 
0.5 kHz 
16 683.5 
to 
16 733.5 
 
101 f. 
0.5 kHz 
18 870.5 
to 
18 892.5 
 
45 f. 
0.5 kHz 
22 284.5
to 
22 351.5
 
135 f. 
0.5 kHz 
25 173 
to 
25 192.5
 
40 f. 
0.5 kHz 
Limits (kHz) 4 202.25 6 300.25  8 378.75  12 476.75  16 683.25  18 870  22 284.25  25 172.75
Frequencies assignable to 
ship stations for data 
transmission  
d) p) aa) bb) cc)      
        
Limits (kHz) 4 202.25 6 300.25 8 396.25  12 517.25  16 693.25 18 892.75 22 351.75 25 192.75 
Frequencies (paired) 
assignable to ship stations 
for NBDP telegraphy and 
data transmission systems 
at speeds not exceeding 
100 bauds for FSK and 
200 bauds for PSK 
 d) j) 
     12 517.5
to 
  12 522
 
10 f. 
0.5 kHz 
     16 693.5
to 
  16 696.5
 
7 f. 
0.5 kHz 
   
 
 10
Limits (kHz) 4 202.25 6 300.25 8 396.25  12 522.25  16 696.75 18 892.75 22 351.75 25 192.75 
Frequencies assignable to 
ship stations for data 
transmission 
 d) p) aa) bb) cc)      
    
 
   
Limits (kHz) 4 202.25 6 300.25 8 396.25  12 549.75  16 733.75 18 892.75 22 351.75 25 192.75 
Calling frequencies 
assignable to ship stations 
for A1A or A1B Morse 
telegraphy g )Frequencies 
assignable to ship stations 
for data transmission 
 m) p)       
        
Limits (kHz) 4 202.25 6 300.25 8 396.25 12 554.75 16 738.75 18 892.75 22 351.75 25 192.75 
Frequencies (paired) 
assignable to ship stations 
for NBDP telegraphy and 
data transmission systems 
at speeds not exceeding 
100 bauds for FSK and 
200 bauds for PSK 
Frequencies assignable to 
ship stations for data 
transmission  aa) bb) cc)     
 d) m) p)  
   12 555 
to 
12 559.5
 
10 f. 
0.5 kHz 
16 739 
to 
16 784.5 
 
92 f. 
0.5 kHz 
   
Limits (kHz) 4 202.25 6 300.25 8 396.25 12 559.75 16 784.75 18 892.75 22 351.75 25 192.75 
 
Table of frequencies (kHz) to be used in the band between 4 000 kHz and 27 500 kHz 
allocated exclusively to the maritime mobile service (continued) 
Limits (kHz) 4 202.25 6 300.25 8 396.25 12 559.75 16 784.75 18 892.75 22 351.75 25 192.75 
Frequencies (non paired) 
assignable to ship stations 
for NBDP telegraphy and 
data transmission systems 
at speeds not exceeding 
100 Bd for FSK and 
200 Bd for PSK and for 
A1A or A1B Morse 
telegraphy (working) b) p) 
dd) m) 
4 202.5 
to 
4 207 
 
10 f. 
0.5 kHz 
6 300.5 
to 
6 311.5 
 
23 f. 
0.5 kHz 
8 396.5 
to 
8 414 
 
36 f. 
0.5 kHz 
12 560 
to 
12 576.5
 
34 f. 
0.5 kHz 
16 785 
to 
16 804 
 
39 f. 
0.5 kHz 
18 893 
to 
18 898 
 
11 f. 
0.5 kHz 
22 352 
to 
22 374 
 
45 f. 
0.5 kHz 
25 193 
to 
25 208 
 
31 f. 
0.5 kHz 
Limits (kHz) 4 207.25 6 311.75 8 414.25 12 576.75 16 804.25 18 898.25 22 374.25 25 208.25 
Frequencies assignable 
to ship stations for digital 
selective calling k) l) 
4 207.5 
to 
4 209 
 
4 f. 
0.5 kHz 
6 312 
to 
6 313.5 
 
4 f. 
0.5 kHz 
8 414.5 
to 
8 416 
 
4 f. 
0.5 kHz 
12 577 
to 
12 578.5
 
4 f. 
0.5 kHz 
16 804.5
to 
16 806 
 
4 f. 
0.5 kHz 
18 898.5 
to 
18 899.5 
 
3 f. 
0.5 kHz 
22 374.5
to 
22 375.5
 
3 f. 
0.5 kHz 
25 208.5
to 
25 209.5
 
3 f. 
0.5 kHz 
Limits (kHz) 4 209.25 6 313.75 8 416.25 12 578.75 16 806.25 18 899.75 22 375.75 25 210 
 
 11
Limits (kHz) 4 209.25 6 313.75 8 416.25 12 578.75 16 806.25 19 680.25 22 375.75 26 100.25 
Frequencies assignable to 
coast stations for data 
transmission 
 n) o) p) aa) bb) cc) 
        
Limits (kHz) 4 213.75 6 317.75 8 416.25  12 619.75   16 816.75   19 703.25   22 443.75   26 120.75
Frequencies (paired) 
assignable to coast stations 
for NBDP and data 
transmission systems, at 
speeds not exceeding 
100 Bd for FSK and 
200 Bd for PSK  
 d) n) o) p) 
4 209.514 
to 
4 21915.5 
 
204 f. 
0.5 kHz 
6 3148 
to 
6 33019.5
 
34 f. 
0.5 kHz 
8 416.5 
to 
8 43618.5
 
405 f. 
0.5 kHz 
12  579620
to 
12 656.5 
12 624 
 
1569 f. 
0.5 kHz 
16 806.517
to 
16 902.5 
16 819.5 
 
1936 f. 
0.5 kHz 
19 680.5 
to 
19 703 
 
46 f. 
0.5 kHz 
22 376 
to 
22 443.5
 
136 f. 
0.5 kHz 
26 100.5
to 
26 120.5
 
41 f. 
0.5 kHz 
Limits (kHz) 4 215.75 6 319.75 8 418.75   12 624.25   16 819.75 19 703.25 22 443.75 26 120.75 
Frequencies assignable to 
coast stations for data 
transmission 
 d) p) aa) bb) cc) 
        
Limits (kHz) 4 219.25 6 330.75 8 436.25 12 656.75 16 902.75 19 703.25 22 443.75 26 120.75 
Frequencies assignable 
to coast stations for digital 
selective calling  
 l) 
4 219.5 
to 
4 220.5 
 
3 f. 
0.5 kHz 
6 331 
to 
6 332 
 
3 f. 
0.5 kHz 
8 436.5 
to 
8 437.5 
 
3 f. 
0.5 kHz 
12 657 
to 
12 658 
 
3 f. 
0.5 kHz 
16 903 
to 
16 904 
 
3 f. 
0.5 kHz 
19 703.5 
to 
19 704.5 
 
3 f. 
0.5 kHz 
22 444 
to 
22 445 
 
3 f. 
0.5 kHz 
26 121 
to 
26 122 
 
3 f. 
0.5 kHz 
Limits (kHz) 4 221 6 332.5 8 438 12 658.5 16 904.5 19 705 22 445.5 26 122.5 
 
Table of frequencies (kHz) to be used in the band between 4 000 kHz and 27 500 kHz 
allocated exclusively to the maritime mobile service (end) 
Band (MHz) 4 6 8 12 16 18/19 22 25/26 
Limits (kHz) 4 221 6 332.5 8 438 12 658.5 16 904.5 19 705 22 445.5 26 122.5 
Frequencies assignable 
to coast stations for 
wide-band and A1A or 
A1B Morse telegraphy, 
facsimile, special and data 
transmission systems and 
direct-printing telegraphy 
systems m) p) ee) ff) 
        
Limits (kHz) 4 351 6 501 8 707 13 077 17 242 19 755 22 696 26 145 
Frequencies assignable 
to coast stations for 
telephony, duplex 
operation a)  hh) 
4 352.4 
to 
4 436.4 
 
29 f. 
3 kHz 
6 502.4 
to 
6 523.4 
 
8 f. 
3 kHz 
8 708.4 
to 
8 813.4 
 
36 f. 
3 kHz 
13 078.4
to 
13 198.4
 
41 f. 
3 kHz 
17 243.4
to 
17 408.4
 
56 f. 
3 kHz 
19 756.4 
to 
19 798.4 
 
15 f. 
3 kHz 
22 697.4
to 
22 853.4
 
53 f. 
3 kHz 
26 146.4
to 
26 173.4
 
10 f. 
3 kHz 
 
 12
Limits (kHz) 4 438 6 525 8 815 13 200 17 410 19 800 22 855 26 175 
 
NOC  USA/AI 1.9/2  
Note a)  
Reasons:  Maintains the frequency bands dedicated for the radiotelephony simplex operation. 
 
SUP   USA/AI 1.9/3 
Note b) 
Reasons:  After the entry into force date of 1 January 2015, Section III, Part B this note will no 
longer be required. 
 
NOC  USA/AI 1.9/4  
Note  c) and d). 
Reasons:  Maintains frequencies for transmission of oceanographic data and paired frequencies 
for NBDP. 
 
SUP  USA/AI 1.9/5 
Note e)  
Reasons:  Maintains frequencies for ship stations using A1A Morse telegraphy not travelling 
faster than 40 Bd 
 
SUP  USA/AI 1.9/6  
Note f) 
Reasons:  Part B, Section V is proposed for suppression. 
 
SUP  USA/AI 1.9/7  
Note g)  
Reasons:  Part B, Section IV is proposed for suppression. 
 
NOC  USA/AI 1.9/8  
Note  i)  to l)  
Reasons:  Maintains paired frequencies for digital selective calling. 
 
 
 13
MOD  USA/AI 1.9/9  
Note m) Frequencies from these frequency bands may also be used for A1A or A1B Morse 
telegraphy (working) (see Part B, Section II).subject to not claiming protection from other 
stations, in the maritime mobile service . 
Reasons:  Assigns additional frequencies for A1A or A1B Morse telegraphy subject to 
protection of the maritime mobile service using new digital technologies. 
  
NOC  USA/AI 1.9/10  
Note n) and o)  
Reasons:  No change is proposed to frequencies used for maritime safety information (MSI) and 
Navigational Telex (NAVTEX). 
 
MOD   USA/AI 1.9/11  
Note p) These sub-bands, except the frequencies referred to in Notes i), j), n) and o), may be 
used for for maritime mobile service (e.g. as described in Recommendation ITU-R 
M.1798)the initial testing and the possible future introduction within the maritime mobile 
service of new digital technologies. Stations using these sub-bands for this purpose shall 
not cause harmful interference to, and shall not claim protection from, other stations 
operating in accordance with Article 5. .  
Reasons:  Implements the channels for new digital technologies in the frequency bands 
designated for wide-band telegraphy, and facsimile without transition a period. 
 
ADD USA/AI 1.9/12 
Note aa)   Until 1 January 2015, these bands may be used by narrow-band direct printing 
applications.   
Reasons:  Allows for transition period for frequencies employing NBDP to transmission of new 
digital technologies subject to not causing interference into NBDP.  
 
ADD  USA/AI 1.9/13 
Note bb)   After 1 January 2015, these bands may be used by narrow-band direct printing 
applications by the administrations, subject to not claiming protection from other stations, . 
Reasons:  Allows for continued use of NBDP after transition date subject to not claiming 
protection from the maritime mobile service. 
 
ADD  USA/AI 1.9/14 
Note cc)     After 1 January 2015, the administrations who make assignments to stations using affected 
administrations. 
 
 14
Reasons:  Removes the use of single channel NBDP after 1 January 2015 to allow the introduction of new HF  
data exchange technologies into the maritime mobile service. 
 
ADD  USA/AI 1.9/15 
Note dd)   These bands may be used by narrow-band direct printing applications by the administrations, 
subject to not claiming protection from other stations. 
Reasons:  Removes the use of single channel NBDP after 1 January 2015 to allow the introduction of new HF  
data exchange technologies into the maritime mobile service. 
 
ADD  USA/AI 1.9/16 
Note ee)    Frequencies from these bands may be used for wide-band telegraphy, facsimile, A1A Morse telegraphy 
and special data transmission on condition that harmful interference is not caused to and protection is not claimed 
from stations, , in the maritime mobile . 
. 
Reasons:  Removes the use of single channel NBDP after 1 January 2015 to allow the introduction of 
new HF data exchange technologies into the maritime mobile service. 
 
ADD USA/AI 1.9/17 
Note ff)   The bands 4 345 – 4 351 kHz, 6 495 – 6 501 kHz, 8 701 – 8 707 kHz may be used for simplex (single-
sideband) telephone operation (regularly spaced by 3 kHz), in accordance with provision No. 52.177, subject to not 
claiming protection from other stations in the maritime mobile service . 
. 
Reasons: Removes the use of single channel NBDP after 1 January 2015 to allow the introduction of new HF  
data exchange technologies into the maritime mobile service. 
 
ADD  USA/AI 1.9/18 
Note gg)  When assigning frequencies on the bands 4 202.25 – 4 207.25 kHz, 6 300.25 –            6 311.75 
kHz, 8 396.25 – 8 414.25 kHz, 12 559.75 – 12 576.75 kHz and 16 784.75 –       16 804.25 kHz, 
administrations shall take all necessary precautions to not cause interference on the DSC distress 
frequencies 4 207.5 kHz, 6 312 kHz, 8 414.5 kHz, 12.577 kHz and 16 804.5 kHz. 
Reasons:  Provides protection for DSC distress frequencies. 
 
ADD   USA/AI 1.9/19 
Note hh)  The bands 4 066.4 – 4 150.4 kHz, 4 352.4 – 4 436.4 kHz, 6 201.4 – 6 231.4 kHz, 6 
502.4 – 6 523.4 kHz, 8 196.4 – 8 298.4 kHz, 8 708.4 – 8 813.4 kHz, 12 231.4 – 12 366.4 kHz, 13 
078.4 – 13 198.4 kHz, 16 361.4 – 16574.4 kHz, 17 243.4 – 17 408.4 kHz,           18 781.4 – 18 
844.4 kHz, 19 756.4 -19 798.4 kHz, 22 001.4 – 22 178.4 kHz, 22 697.4 –   22 853.4 kHz, 25 
071.4 – 25 119.4 kHz, 26 146.4 – 26 173.4 kHz may be used, in accordance with Appendix 25 
 
 15
allotment plan, for digitally modulated emissions on condition that harmful interference is not 
caused to and protection is not claimed from other stations in the maritime mobile service using 
radiotelephony operations. The digitally modulated emissions may be used provided that their 
occupied bandwidth does not exceed 2 800 Hz, it is situated wholly within one frequency channel 
and the peak envelope power of coast stations does not exceed 10 kW and the peak envelope 
power of ship stations does not exceed 1.5 kW for per channel. 
for digital data transmissions on condition that harmful interference is not caused to and protection is not 
claimed from other stations, using radiotelephony operations, in the maritime mobile service. 
 
Reasons:  Allows additional use for digitally modulated emission sdigital data transmissions in the RR 
Appendix 25 bands. 
 
 
 
PART  B  –  Channelling arrangements     (WRC-0712) 
Section II – Narrow-band direct-printing telegraphy (paired frequencies) 
MOD  USA/AI 1.9/20 
TABLE 17a  
Table of frequencies for two-frequency operation by coast stations (kHz) 
 
Reasons:  Providing a table number will help distinguish this table from new the table (17b) that comes 
into force after January 1, 2015.  
NOC  USA/AI 1.9/21 
 
Channel 
4 MHz band
1 
6 MHz band
3
  8 MHz band
4 
No. 
Transmit Receive Transmit Receive Transmit Receive 
 
Reasons:  There are no proposed changes to the table (17a). 
 
 
 16
 
ADD  USA/AI 1.9/22 
 
TABLE 17b (WRC-12) 
Table of frequencies for two-frequency operation by coast stations (kHz)  
 
Channel 
4 MHz band 
1
 6 MHz band  8 MHz band 
No. 
Transmit Receive Transmit Receive Transmit Receive 
 1 
 2 
 3 
 4 
 5 
    
8 376.5 
2
 
8 417 
8 417.5 
8 418 
8 418.5 
8 376.5 
2
 
8 377 
8 377.5 
8 378 
8 378.5 
 6 
 7 
 8 
 9 
10 
 
 
4 214 
4 214.5 
4 215 
 
 
4 176 
4 176.5 
4 177 
 
 
6 318 
6 318.5 
6 319 
 
 
6 266.5 
6 267 
6 267.5 
  
11 
12 
13 
4 177.5 
2
 
4 215.5 
4 177.5 
2
 
4 178 
6 268 
2 
6 319.5 
 
6 268 
2 
6 268.5 
 
  
1
 Ship stations may use the coast station receiving frequencies for transmitting A1A or A1B Morse telegraphy 
(working), with the exception of channel No. 11 (see Appendix 15). 
2
 For the conditions of use of this frequency, see Article 31. 
TABLE 17b (end) 
 
Channel 
12 MHz band  16 MHz band  
No. 
Transmit Receive Transmit Receive 
21 
22 
23 
24 
25 
  16 817 
16 817.5 
16 818 
16 695 
2 
16 818.5 
16 693.5 
16 694 
16 694.5 
16 695 
2 
16 695.5 
26 
27 
  16 819 
16 819.5 
16 696 
16 696.5 
82 
83 
84 
85 
86 
12 620 
12 620.5 
12 621 
12 621.5 
12 622 
12 517.5 
12 518 
12 518.5 
12 519 
12 519.5 
  
87 
88 
89 
90 
91 
12 520 
2 
12 622.5 
12 623 
12 623.5 
12 624 
12 520 
2 
12 520.5 
12 521 
12 521.5 
12 522 
  
 
 
 17
Reasons:  New Table 17b allows for introduction of new HF data exchange technologies into the 
maritime mobile service.  Numbering for the other table (17a) in Section II Part B helps distinguish 
between the two tables in Appendix 17. 
 
 
SUP  USA/AI 1.9/23 
Section III – Narrow-band direct-printing telegraphy  
(non-paired frequencies)  
Reasons:  After the entry into force date of 1 January 2015, this section will no longer be needed 
and will be suppressed.  Article 59 references the new Resolution XYZ.NBDP, which abrogates 
this suppression. 
 
SUP  USA/AI 1.9/24  
Section IV – Morse telegraphy (calling) 
 
Reasons:  Removes the use of Morse telegraphy to allow the introduction of new HF data exchange 
technologies into the maritime mobile service. 
 
SUP  USA/AI 1.9/25  
Section V – Morse telegraphy (working) 
 
Reasons:  Removes the use of Morse telegraphy to allow the introduction of new HF data exchange 
technologies into the maritime mobile service. 
 
 18
ADD  USA/AI 1.9/26 
 
RESOLUTION  XYZ.NBDP  (WRC-12) 
Application and abrogation of certain provisions of the Radio Regulations 
as revised by WRC-12  
The World Radiocommunication Conference (Geneva, 2012), 
considering 
a) that this conference has adopted a partial revision to the Radio Regulations (RR) in accordance 
with its terms of reference which will enter into force on 1 January 2014; 
b) that some of the provisions, as amended by this conference, need to apply as of a later date; 
c) that as a general rule, new and revised Resolutions and Recommendations enter into force at the 
time of signing of the Final Acts of a conference; 
d) that as a general rule, Resolutions and Recommendations which a WRC has decided to suppress 
are abrogated at the time of the signing of the Final Acts of the conference, 
resolves 
1 that, as of 1 January 2015, the following provisions of the RR, which are suppressed by this 
Conference, shall be abrogated:  Table 17a of Appendix 17, Section III of Part B of Appendix 17; 
2 that, as of 1 January 2015, the following provisions, as established by this Conference, shall enter 
into force: Table 17b of Appendix 17; 
 
Reasons:  The Resolution XYZ.NBDP allows for provisions in Appendix 17 to enter into force on the 
agreed date of 1 January, 2015. 
 
MOD  USA/AI 1.9/27 
ARTICLE  59 
 
Entry into force and provisional application 
            of the Radio Regulations     (WRC-2000) 
 
59.XX  The other provisions of these Regulations, as revised by WRC-12, shall enter 
into force on 1 January 2014, with the following exceptions: (WRC-12) 
59.YY – the revised provisions for which other effective dates of application are 
stipulated in Resolutions: 
  XYZ.NBDP (WRC-12) 
 
Reasons: This reference to Resolution XYZ.NBDP allows for the transition date for the entry into force 
of provisions in Appendix 17 and suppress other provisions. 
 
 
SUP  USA/AI 1.9/28 
 
 19
RESOLUTION  351  (Rev.WRC-07) 
Review of the frequency and channel arrangements in the HF bands allocated 
to the maritime mobile service contained in Appendix 17 with a view to 
improving efficiency through the use of new digital technology by the 
maritime mobile service 
 
Reasons:  All of the work related to this Resolution is complete. 
____________________ 
 
 
 
 
 
 
 
 20
DOCUMENT WAC/085(28.07.10) 
 
UNITED STATES OF AMERICA 
DRAFT PROPOSALS FOR THE WORK OF THE CONFERENCE 
Agenda 1.4 To consider, based on the results of ITU-R studies, any further regulatory measures to 
facilitate introduction of new aeronautical mobile (R ) service(AM (R )S) systems in the bands 112-
117.975 MHz, 960-1164 MHz and 5000-5030 MHz in accordance with Resolution 413 (Rev. WRC-07), 
417 (WRC-07, and 420 WRC-07). 
Background  
WRC-07 adopted this agenda item in accordance with the Resolutions referenced above.  WP-5B is the 
lead ITU-R Working Party for this agenda item.  It has carried out studies in accordance with provisions 
of these resolutions.  One of the main focuses of these studies has been to determine the amount of 
spectrum required to support the newly-proposed service. 
The RNSS allocations 5000-5030 MHz were newly allocated to the Radio-Navigation Satellite Service 
(RNSS) at WRC-03.  They were part of a set of actions that increased the amount of spectrum available to 
the RNSS.  Since WRC-03, there has been a large increase in the ITU filings for RNSS bands.  Further, 
the anticipated launch of new RNSS systems will completely use all available RNSS allocations at lower 
frequencies.  In addition there has been a large increase in the number and type of services provided by 
the RNSS.  Therefore, the availability of the 5 GHz RNSS allocations has increased in importance as the 
basis for providing for the future growth of the RNSS.  The importance of the availability of the 5 GHz 
RNSS allocations has been recognized by the provisions of Resolution 420. 
ITU-R Working Party (SG 5B) completed its studies under Agenda Item 1.4 consistent with Resolution 
420.  With regard to the 5010-5030 MHz band, given the available information on AM(R)S operational 
environment and RNSS signal characteristics there was not sufficient information to conclude on sharing 
studies therefore no allocation to AM(R)S is proposed in this band.  Based on these studies the US 
proposes to a NOC in the 5010-5030 MHz band. The U.S. may have a companion proposal under this 
agenda item regarding the 5000-5010 MHz band.  
 
 21
 
Proposal: 
 
ARTICLE  5 
Frequency Allocations 
Section IV  –  Table of Frequency Allocations 
 
 
USA/AI 1.4/1 
NOC 
 
Allocation to services 
Region 1 Region 2 Region 3 
5 010-5 030 AERONAUTICAL  RADIONAVIGATION 
  RADIONAVIGATION-SATELLITE (space-to-Earth) (space-to-space) 
5.328B  5.443B 
  5.367 
 
Reason:  To ensure protection of RNSS systems.   
____________________ 
 
 
 
 
 22
DOCUMENT WAC/086(28.07.10) 
 
WAC Informal Working Group (IWG)-1 
 
UNITED STATES OF AMERICA 
DRAFT PROPOSALS FOR THE WORK OF THE CONFERENCE 
 
Agenda Item 1.10:  to examine the frequency allocation requirements with regard to operation of safety 
systems for ships and ports and associated regulatory provisions, in accordance with Resolution 357 
(WRC-07) 
 
Background Information:   
 
Simplex Use of Duplex Channels 
The Radio Regulations Board approved a Rule of Procedure after WRC-07 regarding simplex 
use in Appendix 18, effectively implementing this part of the enclosed proposal.  WRC-07 
revised Appendix 18 to allow simplex use of channels 01, 07, 19, 20, 21, 60, 66, 78, 79, 80, and 
81 subject to coordination with affected administrations (Note m).  However, WRC-07 omitted 
placing an "x" in the "Single frequency" column against affected channels in Appendix 18, 
thereby unintentionally omitting this from the Radio Regulations. 
  
Expansion of optional simplex use of duplex channels (add more “x” designations to duplex channels) in 
Appendix 18 will provide further benefits to maritime radiocommunications by relieving current 
congestion in the VHF maritime mobile bands in accordance with Recommendation ITU-R M.1084-4.  
Report ITU-R M.2010-1, a study on efficiency in the VHF maritime mobile band, concluded that this 
spectrum efficiency option expands the number of usable communications channels with the minimum of 
compatibility issues.  The analogue VHF radio on board vessels that travel internationally would have 
access to both the original two-frequency channels and their single-frequency derivatives, thus allowing 
port operations on two or single frequency channels.   
 
Channels for E-Navigation (e-Nav)  
Designating in Appendix 18 six channels for E-Navigation (eNAV)
*
data exchange responds to the 
International Maritime Organization’s (IMO) E-Navigation initiatives for future VHF data exchange.  
Technical studies are ongoing within the International Association of Marine Aids to Navigation and 
Lighthouse Authorities (IALA) E-Navigation Committee with close coordination between IALA and the 
ITU-R.  Recommendation ITU-R M.1842-1 provides examples of potential VHF E-Navigation systems 
and recommends the use of Appendix 18 channels for the exchange of data for E-Navigation to support 
future digital technologies in the maritime mobile service VHF bands.  The ITU-R summarizes E-
Navigation spectrum requirements in a liaison statement to IALA (5B/417 Annex 28) and proposes 
continued cooperative efforts between the two maritime organizations.  Adding a new Note s) to the table 
of Appendix 18 and to the section “Notes referring to the Table” supports the identification six channels 
(24, 25, 26, and 27) for potential E-Navigation systems. 
                                                      
*
 eNAV – From IMO: “E-Navigation is the harmonised creation, collection, integration, exchange and 
presentation of maritime information onboard and ashore by electronic means to enhance berth to berth navigation 
and related services, for safety and security at sea and protection of the marine environment”. 
 
 23
 
Protection of Channels AIS 1 and AIS 2 
Protecting the Automatic Identification System channels (AIS 1 and AIS 2) from harmful interference 
would ensure the future safety of maritime mobile radiocommunications for these channels.  Report ITU-
R M.2122 “EMC assessment of shore-based electronic navigation (eNAV) infrastructure and new draft 
standards for data exchange in the VHF maritime mobile band (156-174 MHz)” describes the 
susceptibility of AIS 1 and AIS 2 to interference from the adjacent duplex channels.  This Report also 
provides technical guidelines for the electromagnetic compatibility between AIS and systems that use 
channels 27 and 28.  Thus, modifying Note c) in the section “Notes referring to the Table” of Appendix 
18 is necessary for protecting AIS. 
 
Non-Application of Channel Interleaving 
Recommendation ITU-R M.1084-4 describes the advantages of increased spectrum efficiency by 
channel interleaving 12.5 kHz channels with 25 kHz channels. The current Appendix 18 
excludes maritime mobile service safety channels from 12.5 kHz channel interleaving (See Note 
e)).  By modifying Note e) in the section “Notes referring to the Table” of Appendix 18, the non-
application of channel interleaving extends to the exclusion of AIS 1 and AIS 2, and the 
proposed channels for E-Navigation discussed above. 
 
Long-Range Detection of AIS 
Taking into account the studies performed within ITU-R, especially the Report ITU-R M.2169 and the 
Recommendation ITU-R M. 1371-4, it is proposed to identify the channels 75 and 76 of the Appendix 18 
for the purpose of improving the satellite detection of AIS Message 27. To do so, a primary allocation to 
the mobile satellite service (Earth-to-space) is proposed via a footnote in regards to the frequencies of 
channels 75 and 76 in Article 5. Recommendation ITU-R M.1371-3 provides technical and operational 
characteristics for designing systems intended for long-range detection of AIS.  Additionally, 
mModifying Note n) in the section “Notes referring to the Table” of Appendix 18 identifies the use of 
AIS for long-range detection for channels 75 and 76 and ensures the protection of these channels from 
harmful interference. 
These revisions will provide spectrum for the implementation of the latest version of Recommendation 
ITU-R M.1371-4 for improved satellite detection, increasing reliability for greater probability of vessel 
tracking.  The frequencies used are already allocated to the Maritime mobile service 
A primary allocation in the maritime mobile service and a secondary allocation for aeronautical mobile 
service in the bands 161.9625-161.9875 MHz and 162.0125-162.0375 MHz are proposed.  A secondary 
allocation to the mobile-satellite service (Earth-to-space) in the Table of Frequency Allocations (Article 
5) is also proposed. Consequentially, Footnote No. 5.227A will be suppressed.  This will provide 
additional protection for AIS frequencies which are used for search and rescue, safety of navigation, ship 
movement and tracking of vessels, as well as use by search and rescue aircraft authorized by Appendix 18 
of the Radio Regulations and the latest version of Recommendation ITU-R M.1371-4. 
 
 24
 
Proposal: 
 
MOD USA/AI 1.10/1 
 
Article 5 of the Radio Regulations 
 
Section IV – Table of Frequency Allocations  
 
148-223 MHz 
Allocation to services 
Region 1 Region 2 Region 3 
156.7625-156.8375 MARITIME MOBILE (distress and calling) 
 5.111  5.226  ADD 5.XYZ   
156.8375-161.9625 
FIXED 
MOBILE except aeronautical 
mobile 
5.226, 5.229 
156.8375-161.9625 
FIXED 
 MOBILE 
 
5.226, 5.230, 5.231, 5.232 
161.9625-161.9875 MARITIME MOBILE  
 Mobile-satellite (Earth-to-space) 
Aeronautical mobile (OR) 
5.NNN 
161.9875-162.0125 
FIXED 
MOBILE except aeronautical 
mobile 
5.226, 5.229 
161.9875-162.0125 
FIXED 
 MOBILE 
 
5.226,   
162.0125-162.0375 MARITIME MOBILE  
 Mobile-satellite (Earth-to-space) 
Aeronautical mobile (OR) 5.229,  5.NNN 
156.8375  162.0375-174 
FIXED 
MOBILE except aeronautical 
mobile 
5.226  5.227A 5.229 
162.0375-174 
FIXED 
MOBILE 
  5.226 5.227A 5.230  5.231  5.232 
 
ADD USA/AI 1.10/2 
 
5.XYZ 
Additional allocation:  the bands 156.7625-156.7875 MHz and 156.8125-156.8375 MHz are also 
allocated to the mobile-satellite service (Earth-to-space) on a primary basis for the reception of automatic 
identification system (AIS) emissions, broadcasting long range AIS message (Message 27), as specified 
in the most recent version of Recommendation  ITU-R M.1371, from stations operating in the maritime-
mobile service (see Appendix 18). (WRC-12) 
 
 
 25
Reasons:  Proposed changes reflect the allocation of 156.775MHz and 156.825 MHz to the 
required services in Article 5 to support maritime safety and vessel tracking requirements. 
 
 
5.NNN 
The use of the bands 161.9625-161.9875 MHz and 162.0125-162.0375 MHz by the mobile satellite 
service (Earth-to-space) and the aeronautical mobile (OR) service is limited to automatic identification 
system (AIS) emissions operating in accordance with Appendix 18. (WRC-12) 
 
 
SUP 5.227A  USA/AI 1.10/3 
 
 
MOD   USA/AI 1.10/4 
APPENDIX 18 (Rev.WRC-0712) 
Table of transmitting frequencies in the VHF 
maritime mobile band 
(See Article 52) 
NOTE A – For assistance in understanding the Table, see Notes a) to q) below.     (WRC-07) 
 
NOTE B – The Table below defines the channel numbering for maritime VHF communications 
based on 25 kHz channel spacing and use of several duplex channels, but and also allows the 
simplex use of 12.5 kHz channel spacing duplex channels. The channel numbering for 12.5 kHz 
channels and the conversion of two frequency channels for single-frequency operation of duplex 
channels shall be in accordance with Recommendations ITU-R M.493 and 1084 (Latest 
versions) 4 Annex 4, Tables 1 and 3.     (WRC-0712) 
Reasons:  Proposed changes to NOTE B will allow for more flexibility for simplex (single-
channel) use of duplex channels. 
 
MOD   USA/AI 1.10/5 
 
 26
 
Transmitting  
frequencies  
(MHz) 
 
 
Inter-ship
Port operations  
and ship movement 
Channel 
designator 
Notes 
From ship 
stations 
From coast 
stations 
 Single 
frequency 
Two 
frequency 
Public 
corres-
pondence 
60 m), o) 156.025 160.625  x x x 
01 m), o) 156.050 160.650  x x x 
61 m), o) 156.075 160.675  x x x 
02 m), o) 156.100 160.700  x x x 
62 m), o) 156.125 160.725  x x x 
03 m), o) 156.150 160.750  x x x 
63 m), o) 156.175 160.775  x x x 
04 m), o) 156.200 160.800  x x x 
64 m), o) 156.225 160.825  x x x 
05 m), o) 156.250 160.850  x x x 
65 m), o) 156.275 160.875  x x x 
06 f) 156.300  x    
66 m), o) 156.325 160.925  x x x 
07 m), o) 156.350 160.950  x x x 
67 h) 156.375 156.375 x x   
08  156.400  x    
68  156.425 156.425  x   
09 i) 156.450 156.450 x x   
69  156.475 156.475 x x   
10 h), q) 156.500 156.500 x x   
70 f), j) 156.525 156.525 Digital selective calling for distress, safety and calling 
11 q) 156.550 156.550  x   
71  156.575 156.575  x   
12  156.600 156.600  x   
72 i) 156.625  x    
13 k) 156.650 156.650 x x   
73 h), i) 156.675 156.675 x x   
14  156.700 156.700  x   
74  156.725 156.725  x   
15 g) 156.750 156.750 x x   
75 n) 156.775 156.775  x   
 
 
 27
 
Transmitting  
frequencies  
(MHz) 
Port operations  
and ship movement 
Channel 
designator 
Notes 
From 
ship 
stations 
From coast 
stations 
Inter-ship
Single 
frequency 
Two 
frequency 
Public 
corres-
pondence 
16 f) 156.800 156.800 DISTRESS, SAFETY AND CALLING 
76 n) 156.825 156.825  x   
17 g) 156.850 156.850 x x   
77  156.875  x    
18 m) 156.900 161.500  x x x 
78 m) 156.925 161.525  x x x 
19 m) 156.950 161.550  x x x 
79 m) 156.975 161.575  x x x 
20 m) 157.000 161.600  x x x 
80 m) 157.025 161.625  x x x 
21 m) 157.050 161.650  x x x 
81 m) 157.075 161.675  x x x 
22 m) 157.100 161.700  x x x 
82 m), o) 157.125 161.725  x x x 
23 m), o) 157.150 161.750  x x x 
83 m), o) 157.175 161.775  x x x 
24 m),o) , s) 157.200 161.800  x x x 
84 m),o) , s) 157.225 161.825  x x x 
25 m),o) , s) 157.250 161.850  x x x 
85 m),o) , s) 157.275 161.875  x x x 
26 m),o) , s) 157.300 161.900  x x x 
86 m),o) , s) 157.325 161.925  x x x 
27 r) 157.350 161.950   x x 
87  157.375 157.375  x   
28 r) 157.400 162.000   x x 
88  157.425 157.425  x   
AIS 1 f), l), p) 161.975 161.975     
AIS 2 f), l), p) 162.025 162.025     
 
Reasons:  Proposed changes to the Table will allow for more flexibility for simplex (single-
channel) use of duplex channels.  Additional notes are added to identify channels for E-
Navigation and protection of AIS 1 and AIS 2. 
 
 28
 
Notes referring to the Table 
General notes 
 
MOD  USA/AI 1.10/6 
 
c) The channels of the present Appendix, but preferably channel 28 and with the exception of 
channels 06, 13, 15, 16, 17, 70, 75 and 76, may be used for direct-printing telegraphy and data 
transmission, subject to special arrangement between interested and affected administrations. 
 
Reasons:  Proposed change reflects the need to protect AIS 1 and AIS 2 from adjacent band 
interference from channel 28. 
 
 
MOD  USA/AI 1.10/7 
 
e) Administrations may apply 12.5 kHz channel interleaving on a non-interference basis to 25 
kHz channels, in accordance with the most recent version of Recommendation 
ITU-R M.1084, provided: 
 – it shall not affect the 25 kHz channels of the present Appendix maritime mobile distress 
and safety, AIS, and E-Navigation data exchange frequencies, especially the channels 06, 
13, 15, 16, 17, and 70, 24, 25, 26, 84, 85, 86, AIS 1 and AIS 2, nor the technical 
characteristics set forth in Recommendation ITU-R M.489-2 for those channels; 
 – implementation of 12.5 kHz channel interleaving and consequential national requirements 
shall be subject to coordination with affected administrations.    (WRC-07) 
 
Reasons:  Proposed changes to Note e) identify AIS and E-Navigation channels as additional 
channels requiring protection from channel interleaving. 
 
 
MOD  USA/AI 1.10/8 
 
n) The use of these channels (75 and 76) should be restricted to navigation-related 
communications only and all precautions should be taken to avoid harmful interference to 
channel 16, e.g. by limiting the output power to 1 W or by means of geographical separation.   
These channels are also allocated to the mobile-satellite service (Earth-to-space) for long 
range detection of AIS in accordance with recommendation ITU-R M.1371. 
 
Reasons:  Proposed change protects the channels intended to be used for long-range detection of 
AIS from harmful interference. 
 
 
 29
 
ADD  USA/AI 1.10/9 
 
r)  When using these channels (27 and 28), all precautions should be taken to avoid harmful          
interference to AIS 1 and AIS 2.  (WRC-12) 
 
Reasons:  Proposed change protects AIS 1 and AIS 2 from harmful interference. 
 
ADD USA/AI 1.10/10 
 
s)  These channels are designated for the exchange of data for E-Navigation (operations of safety systems 
for ships and ports) in accordance with Recommendation ITU-R M.1842.  (WRC-12)  
 
Reasons:  Proposed Note s) identifies channels for E-Navigation in Appendix 18. 
 
____________________ 
 
 
 
 30
 
 
 
 
 
 
 
 
 
 
 
Space Services 
 
 
 31
DOCUMENT WAC/081(28.07.10) 
 
 
United States of America 
 
DRAFT PROPOSALS FOR THE WORK OF THE CONFERENCE 
 
 
WRC-11 Agenda Item 1.11: to consider a primary allocation to the space research 
service (Earth-to-space) within the band 22.55-23.15, taking into account the results 
of ITU-R studies, in accordance with Resolution 753 (WRC-07) 
 
Background Information: 
 
To support the SRS missions in near Earth orbit, including missions in transit to the moon and at or near 
the moon, downlink (space-to-Earth) transmissions will operate in the 25.5-27.0 GHz SRS allocation. 
This 1.5 GHz wide downlink band will be used for both scientific data retrieval and voice/video 
communication with the Earth. However, there is a need for a companion uplink (Earth-to-space) band to 
provide the mission data, command and control links for these missions. Due to the potential for many 
concurrent exploration-related systems and the large bandwidth requirements of these systems, especially 
, it is envisioned that an uplink bandwidth of sufficient primary space research service frequency 
spectrum in the 22.55-23.15 GHz range will provide the space exploration initiatives adequate uplink 
(Earth-to-space) bandwidth capacity in a band that is paired with the inter-satellite service and thus is a 
reasonable companion to the primary space research service 25.5-27.0 GHz space-to-Earth band. 
 
Resolution 753 (WRC-07) calls for sharing studies between SRS (Earth-to-space) and the fixed, inter-
satellite and mobile services in the band 22.55-23.15 GHz to determine appropriate criteria which will 
provide for sharing between a new SRS (Earth-to-space) allocation and the existing services in the 22.55-
23.15 GHz band. These sharing studies have been initiated in ITU-R Working Party 7B, the responsible 
group for CPM studies in support of WRC-11 agenda item 1.11. 
 
The CPM text for Agenda Item 1.11 has several Methods.  Method B recognizes a  protection criteria 
agreed in the ITU-R for the non -GSO ISS links operating in the band above 23.15 GHz. This criteria is 
proposed for inclusion in the Radio Regulations. 
 
Proposal 
 
Article 5 
Frequency Allocations 
Section IV  –  Table of Frequency Allocations 
(See No. 2.1) 
MOD USA/1.11/1 
 
 32
22-24.75 GHz 
 
Reason-  This allocation proposal fulfills the requirements of the agenda item and ensures 
protection of all services in the allocation before the conference. 
 
 
ADD USA/1.11/2 
 
5.ISS  The aggregated unwanted emission levels from all earth stations in the space research service in 
the band 22.55-22.85 GHz shall not exceed a power density of -215 dBW/Hz at the input to the non-GSO 
ISS satellite receiver, not to be exceeded for a fraction of time greater than 10
-2
 percent (0.01%) in the 
band 23.183-23.377 GHz. 
 
Reason: to ensure protection of the operational ISS links operating in the band 
22.15-23.55 GHz. 
 
 
 
___________________________ 
 
Allocation to services 
Region 1 Region 2 Region 3 
22.55-22.85 FIXED 
 INTER-SATELLITE 5.338A 
 MOBILE 
 SPACE RESEARCH SERVICE (Earth-to-Space)  5.ISS 
 5.149 
22.85-23.55 FIXED 
 INTER-SATELLITE 5.338A 
 MOBILE 
  
 5.149 
 
 33
  
 
 
 
 
 
 
 
 
 
 
Regulatory Issues 
 
 
 
 34
DOCUMENT WAC/079(28.07.10) 
 
 
UNITED STATES OF AMERICA 
DRAFT PROPOSAL FOR THE WORK OF THE CONFERENCE 
 
Agenda Item 1.6:  to review No. 5.565 of the Radio Regulations in order to update the 
spectrum use by the passive services between 275 GHz and 3 000 GHz, in accordance 
with Resolution 950 (Rev.WRC 07), and to consider possible procedures for free-space 
optical-links, taking into account the results of ITU R studies, in accordance with 
Resolution 955 (WRC 07) 
 
Background Information:  Agenda item 1.6 addresses two distinct issues. The content 
of this proposal addresses only the updating of No. 5.565 in accordance with Resolution 
950 (Rev. WRC-07). 
The Table of Frequency Allocations establishes allocations at frequencies between 9 kHz 
and 275 GHz.  No allocations currently exist above 275 GHz, although an entry in the 
Table for the range 275-1 000 GHz contains a reference to No. 5.565. 
  
Resolution 950 (Rev. WRC-07) calls for a re-examination of the frequency bands 
contained in No. 5.565 with a view to updating this footnote, including advice on the 
applications suitable for the range 275-3 000 GHz.  Passive services such as the Earth 
exploration-satellite service (EESS), space research service (SRS), and radio astronomy 
service (RAS) already utilize portions of the 275-3 000 GHz range for scientific 
observation. Some of these operations measure spectral line and continuum emissions 
from space while others measure atmospheric and climate-related natural emissions from 
the Earth and its atmosphere.  Resolution 950 (Rev. WRC-07) resolves to review No. 
5.565 to update the information on spectrum use in the frequency range 275-3 000 GHz 
by the passive services, but specifically excludes allocations in this range.  Although the 
focus of the agenda item is spectrum use by passive services, it is important to recognize 
that this frequency range concurrently is used for experimentation with, and development 
of, an array of emerging active service applications.   
  
ITU-R studies of current and projected scientific needs for passive use of the frequency 
range 
275-3 000 GHz resulted in new recommendations and reports.  These studies revealed a 
need to update No. 5.565 through the addition of some new bands of interest and the 
deletion of some existing bands.  Technical factors strongly influence use of the range 
275-3 000 GHz.  First, the Earth’s atmosphere absorbs signals at these frequencies, 
especially in the range 1 000-3 000 GHz where the atmosphere is nearly opaque.  Second, 
antenna beamwidths are extremely narrow at such high frequencies.   
 
 
 35
Interference from non-geostationary satellites into terrestrial stations is highly unlikely 
due to the above factors and the speed of the spacecraft relative to Earth.  With regard to 
geostationary satellites, coordination would resolve the potential interference from the 
unlikely scenario of transmissions with maximum antenna coupling and minimum 
propagation loss.  As a result, passive and active services can share frequencies above 1 
000 GHz without constraints.  
 
Proposal: 
ARTICLE  5 
Frequency allocations 
 
Section IV  –  Table of Frequency Allocations 
(See No. 2.1) 
 
MOD USA/AI 1.6/1       
 
5.565 A number of frequency bands in Tthe frequency band range 275-13 000 GHz 
may be are used by administrations for experimentation with, and development of, 
various active and passive services applications.  This frequency range also is used for 
experimentation with, and development of, various active service applications.  In theis 
band frequency range 275-1 000 GHz a need has been identified for the following 
frequency bands for measurements by spectral line measurements for passive services: 
 
 
- radio astronomy service: 275-323 GHz, 327-371 GHz, 388-424 GHz, 426-442 GHz, 
453-510 GHz, 623-711 GHz, 795-909 GHz and 926-945 GHz;  
 
- Earth exploration-satellite service (passive) and space research service (passive): 
275-277286 GHz, 294296-306 GHz, 316313-334356 GHz, 342-349 GHz, 363361-365 
GHz, 371369-389392 GHz, 397-399 GHz, 409-411 GHz, 416-434 GHz, 442439-
444467 GHz, 496477-506502 GHz, 523-527 GHz, 546538-568581 GHz, 624611-
629630 GHz, 634-654 GHz, 659657-661692 GHz, 684-692 GHz713-718 GHz, 
730729-732733 GHz, 750-754 GHz, 771-776 GHz, 823-846 GHz, 851850-853854 
GHz, 857-862 GHz, 866-882 GHz, 905-928 GHz, and 951-956 GHz, 968-973 GHz 
and 985-990 GHz.  
 
In the frequency range 1 000-3 000 GHz, passive services may use any band segment for ground- 
and space-based experimentation without constraints on any other services operating in this 
range.  
 
Future research in this largely unexplored spectral region may yield additional spectral 
lines and continuum bands of interest to the passive services. Administrations are urged 
to take all practicable steps to protect these passive services from harmful interference  
until the date when the allocation Ttable is established in the above-mentioned 275-3 000 
GHz frequency rangeband. 
 
 
 36
Reasons:  Based on the studies performed, the list of EESS and SRS bands of interest in the 
range 275-1 000 GHz need to be updated in No. 5.565.  ITU-R studies have shown that 
unconstrained sharing between passive and active services in the frequency range 1 000-3 000 
GHz is feasible; therefore passive services should have use of any band segment in this frequency 
range for experimentation.  
 
SUP USA/AI 1.6/2      
 
RESOLUTION  950 (Rev. WRC-07) 
Consideration of the use of the frequencies 
between 275 and 3 000 GHz 
 
Reasons:  Required studies have been completed.  The resolution is no longer needed. 
 
____________________ 
 
 
 37
DOCUMENT WAC/082(28.07.10) 
 
United States of America 
DRAFT PROPOSALS FOR THE WORK OF THE CONFERENCE 
 
WRC-11 Agenda Item 7:  to consider possible changes in response to Resolution 86 (Rev. 
Marrakesh, 2002) of the Plenipotentiary Conference: “Advance publication, coordination, 
notification and recording procedures for frequency assignments pertaining to satellite 
networks”, in accordance with Resolution 86 (Rev.WRC-07); 
Issue: Nos. 23.13, 23.13A, 23.13B and 23.13C of the Radio Regulations 
Background information: 
 
No. 23.13 and its sub-provisions deal with broadcasting-satellite service (BSS) systems which 
have the capability to serve other countries.  No. 23.13 has been the subject of intense debate at 
many past WRCs.  WRC-95 adopted Resolution 531 (WRC-95), which (through Section 5.3.1 of 
Annex 1) instructed the RRB to modify its Rule of Procedure for (then) S23.13.  The instructions 
were very similar to the provisions 23.13A and 23.13B added by WRC-2000—an administration 
must comment within four months to object to its inclusion in the service area of a BSS network 
after its publication, and if no agreement is reached between the concerned administrations, then 
the service area would be modified to exclude the objecting administration’s territory, without 
changing the network’s coverage area. Non-commenting administrations were assumed to have 
no objection to inclusion in the service area (which is different from provision 23.13C adopted 
subsequently by WRC-2000).  Resolution 531 (WRC-95) also maintained clear separation 
between agreements under S23.13 and Article 4 of Appendix 30. 
 
At WRC-97, Resolution 536 was adopted, regarding the operation of broadcasting satellites 
serving other countries.  It resolves “that, in addition to observing No. S23.13/2674, and before 
providing satellite broadcasting services to other administrations, administrations originating the 
services should obtain the agreement of those other administrations.” The United States took a 
reservation against this Resolution stating “that it disagrees with aspects of the resolution that 
would encourage administrations originating satellite broadcasting services to other 
administrations to obtain further agreement of administrations before providing such service.” 
 
Finally, at WRC-2000, after extensive and contentious discussion, a balance was reached among 
the very different views regarding the issue.  No. 23.13 was modified to include specific 
provisions—23.13A, 23.13B, and 23.13C—which detail how this provision is to be implemented 
in practice.  Nos. 23.13A, 23.13B and 23.13C were carefully crafted to describe the actions 
required if an agreement cannot be reached with an administration not wishing to be included in 
the BSS satellite’s service area.  These provisions specifically require modification of a BSS 
satellite’s service area, which means the earth stations associated with the satellite network would 
not receive protection on the territory of the countries whose objection cannot be resolved. WRC-
2000 also adopted Resolution 139, regarding use of fixed-satellite service systems for the 
provision of direct-to-home television broadcasting. This short Resolution ultimately asks for the 
ITU-R to conduct studies of use of FSS allocations for DTH and to report to WRC-03 for 
possible inclusion in a future agenda. No action was taken at WRC-03 in this regard and WRC-07 
since decided to suppress the Resolution.   
 
 
 38
It is worth noting that since WRC-2000, Nos. 23.13, 23.13A, 23.13B and 23.13C have not been 
touched, with no proposals from any administration to WRC-03 and -07 addressing these 
provisions, underscoring the fact that an appropriate balance between the concerns of 
administrations was achieved. 
 
Recently there have been some speculations with regard to changes to No. 23.13 and its sub-
provisions in several Working Parties of the ITU-R.  One suggestion is that footnotes be added to 
the title of Article 23 stating that Section II of the Article applies to FSS transponders used for 
DTH transmissions, implying that No. 23.13 and its sub-provisions would apply to DTH FSS.  
Other suggested changes have been to modify Nos. 23.13B and 23.13C to be “consistent” with 
the wording of No. 23.13 itself.  Such changes to 23.13B and 23.13C would require that the 
satellite’s physical “coverage area” be modified, contrary to the current requirement that its 
“service area” be modified.  When these suggestions were raised in several Working Parties there 
was considerable opposition ,and little support.  
 
There are serious issues associated with the suggested changes to No 23.13.  Firstly, the United 
States does not support any extension of No. 23.13 and its sub-provisions, or Article 23, to other 
services or applications like direct-to-home FSS.  No useful purpose would be served by 
abandoning the present distinction between the BSS and the FSS. Many applications are unique 
to only one of the services and these applications justify maintaining the distinction between 
them. 
 
Further, there is no inconsistency between No. 23.13 and its sub-provisions.  The wording of No. 
23.13A through 23.13C, which describe how No. 23.13 is implemented in practice, was carefully 
chosen in order to reach agreement across many administrations with diverse views at WRC-
2000.  The United States does not support reopening the difficult discussions associated with No. 
23.13 and its sub-provisions. 
 
In addition, Nos. 23.13A, 23.13B and 23.13C were carefully crafted to specifically require only 
the modification of a BSS satellite’s service area, recognizing that modification of a satellite’s 
coverage area is simply not technically feasible, either from the perspective of modifying a 
satellite’s antenna, or designing a satellite antenna to exclude one country’s territory when the 
satellite provides service to neighboring countries.  Such proposals would have grave detrimental 
effects on the future of the satellite industry as satellites are inherently regional or international in 
nature.   
 
 
Proposal: 
ARTICLE 23 
 
Broadcasting services 
 
Section I – Broadcasting service 
 
* * * * * 
 
USA/7/1 NOC 
 
 39
 
Section II – Broadcasting-satellite service 
 
23.13 § 4  In devising the characteristics of a space station in the broadcasting-satellite 
service, all technical means available shall be used to reduce, to the maximum, the radiation over 
the territory of other countries unless an agreement has been previously reached with such 
countries. 
 
USA/7/2 NOC 
 
23.13A  If the Bureau receives an indication of a written agreement under No. 23.13, 
it shall include reference to that agreement when the assignments to the system are recorded with 
reference to No. 23.13 in the Remarks column of the Master International Frequency Register or 
included in the Regions 1 and 3 List. (WRC-2000) 
 
USA/7/3 NOC 
 
23.13B  If, within the four-month period following the publication of the Special 
Section for a broadcasting-satellite service (except sound broadcasting) network submitted for 
coordination under Article 9 or Appendix 30, an administration informs the Bureau that all 
technical means have not been used to reduce the radiation over its territory, the Bureau shall 
draw the attention of the responsible administration to the comments received. The Bureau shall 
request the two administrations to make every effort possible in order to resolve the issue. Either 
administration may request the Bureau to study the matter and submit its report to the 
administrations concerned. If no agreement can be reached, then the Bureau shall delete the 
territory of the objecting administration from the service area without adversely affecting the rest 
of the service area and inform the responsible administration. (WRC-2000) 
 
USA/7/4 NOC 
 
23.13C  If, after the four-month period mentioned above, an administration objects to 
remaining in the service area, the Bureau shall delete the territory of the objecting administration 
from the service area of the broadcasting-satellite service (except sound broadcasting) network 
concerned without adversely affecting the rest of the service area and inform the responsible 
administration. (WRC-2000) 
 
Reasons:  No. 23.13 has been a very contentious issue at several past WRCs. The difficult 
compromise reached at WRC-2000 (where Nos. 23.13A thru 23.13C were added to explain what 
responsibilities administrations and the Radiocommunications Bureau have under No. 23.13) 
represents a delicate balance between the strongly differing views and should not be revisited.  
Nos. 23.13B and 23.13C were carefully drafted to require only modification of a satellite 
network's service area in the event of a continuing disagreement.  Therefore, the United States is 
of the view that no action/modification is required on Nos. 23.13B and 23.13C. 
 
_______________