Archived—Proposed Revisions to the Canadian Table of Frequency Allocations (2009 Edition)

E2 (AI 1.14) - Operational Procedures and Requirements of the Global Maritime Distress and Safety System (GMDSS) and New Technologies in the VHF Maritime Mobile Band

Background

WRC-07 agenda item 1.14 addressed mainly two issues: the transition to the GMDSS and the introduction of new technologies in the VHF maritime mobile band. The development of GMDSS began more than two decades ago, and its global implementation for vessels subject to the International Convention for the Safety of Life at Sea (SOLAS) became effective on 1 February 1999. The transition to GMDSS, however, remains ongoing for the foreseeable future, as there are many vessels not subject to SOLAS that are not yet fitted with GMDSS. To reflect the current status of the transition to the GMDSS, WRC-07 updated the associated regulatory procedures and requirements, including some Article 5 footnotes.

WRC-07 was also asked to consider necessary changes to Appendix 18 in order to enable the use of new technologies by the maritime mobile service (in the VHF maritime mobile band). Some of these changes necessitated additional modifications to Article 5.

Summary of Proposed Changes to the Canadian Table

415-525 kHz

415-495

MARITIME MOBILE 5.79 MOD 5.79A

5.78 5.80 MOD 5.82

495-505

MOBILE (distress and calling) 5.82A

5.83 5.82B

505-510

MARITIME MOBILE 5.79

510-525

AERONAUTICAL RADIONAVIGATION
MOBILE MOD 5.79A MOD 5.84
2 173.5-2 190.5 kHz

2 173.5-2 190.5

MOBILE (distress and calling)

MOD 5.108 5.109 5.110 MOD 5.111

2 850-3 025 kHz

2 850-3 025

AERONAUTICAL MOBILE (R)

MOD 5.111 MOD 5.115

4 063-4 438 kHz

4 063-4 438

MARITIME MOBILE MOD 5.79A 5.109 5.110 MOD 5.130
5.131 5.132

5.128 5.129

5 480-5 680 kHz

5 480-5 680

AERONAUTICAL MOBILE (R)

MOD 5.111 MOD 5.115

5 680-5 730

AERONAUTICAL MOBILE (OR)
MOD 5.111 MOD 5.115 C5
6 200-6 525 kHz

6 200-6 525

MARITIME MOBILE 5.109 5.110 MOD 5.130 5.132

C4

8 195-8 815 kHz

8 195-8 815

MARITIME MOBILE 5.109 5.110 5.132 MOD 5.145

MOD 5.111

9 995-10 100 kHz

9 995-10 003

STANDARD FREQUENCY AND TIME SIGNAL
(10 000 kHz)

MOD 5.111

10 003-10 005

STANDARD FREQUENCY AND TIME SIGNAL
Space Research

MOD 5.111

10 005-10 100

AERONAUTICAL MOBILE (R)

MOD 5.111

12 230-13 200 kHz

12 230-13 200

MARITIME MOBILE 5.109 5.110 5.132 MOD 5.145
14 990-15 005 kHz

14 990-15 005

STANDARD FREQUENCY AND TIME SIGNAL
(15 000 kHz)

MOD 5.111

16 360-17 410 kHz

16 360-17 410

MARITIME MOBILE 5.109 5.110 5.132 MOD 5.145
19 990-20 010 kHz

19 990-19 995

STANDARD FREQUENCY AND TIME SIGNAL
Space Research

MOD 5.111

19 995-20 010

STANDARD FREQUENCY AND TIME SIGNAL (20 000 kHz)

MOD 5.111

117.975-137 MHz

117.975-137

AERONAUTICAL MOBILE (R)

MOD 5.111 5.198 5.199 MOD 5.200 5.203

150.05-174 MHz

150.05-156.48757625

MOBILE
Fixed

MOD 5.226 5.227

156.4875-156.5625

MOBILE
Fixed

MARITIME MOBILE (distress and calling via DSC)

MOD 5.111 MOD 5.226 5.227 CAxy

156.5625-156.7625

MOBILE
Fixed

MOD 5.226 5.227

156.7625-156.8375

MARITIME MOBILE (distress and calling)

MOD 5.111 MOD 5.226

156.8375-174

MOBILE
Fixed

MOD 5.226 5.227A

235-273 MHz

235-273

FIXED
MOBILE

MOD 5.111 5.199 5.254 MOD 5.256 5.256A C5

406-406.1 MHz

406-406.1

MOBILE-SATELLITE (Earth-to-space)

MOD 5.266 5.267

456-459 MHz

456-459

MOBILE 5.286AA MOD 5.287 Cxx
Fixed

5.288

460-470 MHz

460-470

MOBILE 5.286AA MOD 5.287 Cxx
Fixed

5.289

SUP 5.78 See Section F3
MOD 5.79A When establishing coast stations in the NAVTEX service on the frequencies 490 kHz, 518 kHz and 4 209.5 kHz, administrations are strongly recommended to coordinate the operating characteristics in accordance with the procedures of the International Maritime Organization (IMO) (see Resolution 339 (Rev. WRC-9707)). (WRC 9707)
SUP 5.80 See Section F3
MOD 5.82 In the maritime mobile service, the frequency 490 kHz is from the date of full implementation of the GMDSS (see Resolution 331 (Rev. WRC-97)), to be used exclusively for the transmission by coast stations of navigational and meteorological warnings and urgent information to ships, by means of narrow-band direct-printing telegraphy. The conditions for use of the frequency 490 kHz are prescribed in Articles 31 and 52. In using the band 415-495 kHz for the aeronautical radionavigation service, administrations are requested to ensure that no harmful interference is caused to the frequency 490 kHz. (WRC-9707)
ADD 5.82A The use of the band 495-505 kHz is limited to radiotelegraphy. (WRC-07)
ADD 5.82B Administrations authorizing the use of frequencies in the band 495-505 kHz by services other than the maritime mobile service shall ensure that no harmful interference is caused to the maritime mobile service in this band or to the services having allocations in the adjacent bands, noting in particular the conditions of use of the frequencies 490 kHz and 518 kHz, as prescribed in Articles 31 and 52. (WRC-07)
SUP 5.83 The frequency 500 kHz is an international distress and calling frequency for Morse radiotelegraphy. The conditions for its use are prescribed in Articles 31 and 52, and in Appendix 13. (WRC-07)
MOD 5.84 The conditions for the use of the frequency 518 kHz by the maritime mobile service are prescribed in Articles 31 and 52 and in Appendix 13. (WRC-9707)
MOD 5.108 The carrier frequency 2 182 kHz is an international distress and calling frequency for radiotelephony. The conditions for the use of the band 2 173.5-2 190.5 kHz are prescribed in Articles 31 and 52 and in Appendix 13. (WRC-07)
MOD 5.111

The carrier frequencies 2 182 kHz, 3 023 kHz, 5 680 kHz, 8 364 kHz and the frequencies 121.5 MHz, 156.525 MHz, 156.8 MHz and 243 MHz may also be used, in accordance with the procedures in force for terrestrial radiocommunication services, for search and rescue operations concerning manned space vehicles. The conditions for the use of the frequencies are prescribed in Article 31 and in Appendix 13. The same applies to the frequencies 10 003 kHz, 14 993 kHz and 19 993 kHz, but in each of these cases emissions must be confined in a band of ±3 kHz about the frequency. (WRC-07)

MOD 5.115 The carrier (reference) frequencies 3 023 kHz and 5 680 kHz may also be used, in accordance with Article 31 and Appendix 13 by stations of the maritime mobile service engaged in coordinated search and rescue operations. (WRC-07)
ADD 5.128 Frequencies in the bands 4 063-4 123 kHz and 4 130-4 438 kHz may be used exceptionally by stations in the fixed service, communicating only within the boundary of the country in which they are located, with a mean power not exceeding 50 W, on condition that harmful interference is not caused to the maritime mobile service. In addition, in Afghanistan, Argentina, Armenia, Azerbaijan, Belarus, Botswana, Burkina Faso, the Central African Rep., China, the Russian Federation, Georgia, India, Kazakhstan, Mali, Niger, Kyrgyzstan, Tajikistan, Chad, Turkmenistan and Ukraine, in the bands 4 063-4 123 kHz, 4 130-4 133 kHz and 4 408-4 438 kHz, stations in the fixed service, with a mean power not exceeding 1 kW, can be operated on condition that they are situated at least 600 km from the coast and that harmful interference is not caused to the maritime mobile service. (WRC-07)
SUP 5.129   On condition that harmful interference is not caused to the maritime mobile service, the frequencies in the bands 4 063-4 123 kHz and 4 130-4 438 kHz may be used exceptionally by stations in the fixed service communicating only within the boundary of the country in which they are located with a mean power not exceeding 50 W. (WRC-07)
MOD 5.130 The conditions for the use of the carrier frequencies 4 125 kHz and 6 215 kHz are prescribed in Articles 31 and 52 and in Appendix 13. (WRC-07)
MOD 5.145 The conditions for the use of the carrier frequencies 8 291 kHz, 12 290 kHz and 16 420 kHz are prescribed in Articles 31 and 52 and in Appendix 13. (WRC-07)
SUP 5.198    See Section A4.
SUP 5.199 The bands 121.45-121.55 MHz and 242.95-243.05 MHz are also allocated to the mobile-satellite service for the reception on board satellites of emissions from emergency position-indicating radiobeacons transmitting at 121.5 MHz and 243 MHz (see Appendix 13). (WRC-07)
MOD 5.200 In the band 117.975-137 MHz, the frequency 121.5 MHz is the aeronautical emergency frequency and, where required, the frequency 123.1 MHz is the aeronautical frequency auxiliary to 121.5 MHz. Mobile stations of the maritime mobile service may communicate on these frequencies under the conditions laid down in Article 31 and Appendix 13 for distress and safety purposes with stations of the aeronautical mobile service. (WRC-07)
SUP 5.203 See Section A4.
MOD 5.226

The frequency 156.525 MHz is the international distress, safety and calling frequency for the maritime mobile VHF radiotelephone service using digital selective calling (DSC). The conditions for the use of this frequency and the band 156.4875-156.5625 MHz are contained in Articles 31 and 52, and in Appendix 18.

The frequency 156.8 MHz is the international distress, safety and calling frequency for the maritime mobile VHF radiotelephone service. The conditions for the use of this frequency and the band 156.7625-156.8375 MHz are contained in Article 31 and Appendix 18.

In the bands 156-156.4875 MHz, 156.5625-156.7625 MHz, 156.8375-157.45 MHz, 160.6-160.975 MHz and 161.475-162.05 MHz, each administration shall give priority to the maritime mobile service on only such frequencies as are assigned to stations of the maritime mobile service by the administration (see Articles 31 and 52, and Appendix 18).

Any use of frequencies in these bands by stations of other services to which they are allocated should be avoided in areas where such use might cause harmful interference to the maritime mobile VHF radiocommunication service.

However, the frequencies 156.8 MHz and 156.525 MHz and the frequency bands in which priority is given to the maritime mobile service may be used for radiocommunications on inland waterways subject to agreement between interested and affected administrations and taking into account current frequency usage and existing agreements. (WRC-07)

SUP 5.227*

In the maritime mobile VHF service the frequency 156.525 MHz is to be used exclusively for digital selective calling for distress, safety and calling. The conditions for the use of this frequency are prescribed in Articles 31 and 52, and Appendices 13 and 18. (WRC-07)

* Footnote 5.227 was modified by WRC-07; however, the Department has opted to suppress the existing No. 5.227 and to maintain primary land mobile service and secondary fixed service allocations in the bands 156.4875-156.5125 MHz and 156.5375-156.5625 MHz in accordance with a new Canadian footnote CAxy.

ADD 5.227A 

Additional allocation: the bands 161.9625-161.9875 MHz and 162.0125-162.0375 MHz are also allocated to the mobile-satellite service (Earth-to-space) on a secondary basis for the reception of automatic identification system (AIS) emissions from stations operating in the maritime-mobile service (see Appendix 18). (WRC-07)

MOD 5.256 The frequency 243 MHz is the frequency in this band for use by survival craft stations and equipment used for survival purposes (see Appendix 13). (WRC-07)
SUP 5.256A See Section F3.
MOD 5.266 The use of the band 406-406.1 MHz by the mobile-satellite service is limited to low power satellite emergency position-indicating radiobeacons (see also Article 31 and Appendix 13). (WRC-07)
ADD 5.286AA See Section A2.
MOD 5.287 In the maritime mobile service, the frequencies 457.525 MHz, 457.550 MHz, 457.575 MHz, 467.525 MHz, 467.550 MHz and 467.575 MHz may be used by on-board communication stations. Where needed, equipment designed for 12.5 kHz channel spacing, also using the additional frequencies 457.5375 MHz, 457.5625 MHz, 467.5375 MHz and 467.5625 MHz, may be introduced for on-board communications. The use of these frequencies in territorial waters may be subject to the national regulations of the administration concerned. The characteristics of the equipment used shall conform to those specified in Recommendation ITU-R M.1174-2. (see Resolution 341 (WRC-97)). (WRC-9707)
SUP 5.288 See Section F3.
ADD CAxy (CAN-09) Additional allocation: the bands 156.4875-156.5125 MHz and 156.5375-156.5625 MHz are also allocated to the land mobile service on a primary basis and to the fixed service on a secondary basis. The use of these bands by the land mobile and fixed services shall not cause harmful interference to nor claim protection from the maritime mobile VHF radiocommunication service.
ADD Cxx See Section A2.

Discussion

In view of the transition to the GMDSS and consistent with the intent that the ITU's Radio Regulations reflect current maritime operations, WRC-07 reallocated the 500 kHz Morse code international distress and calling frequency given that it was no longer used for radiotelegraphy (e.g. NAVTEX). Although the band 495-505 kHz was modified to reflect a primary mobile service allocation, the maritime mobile service maintained its priority through footnote 5.82B.

The review of GMDSS requirements also revealed that the GMDSS digital selective calling (DSC) frequency, 156.525 MHz (channel 70), was not afforded the same international recognition and protection in Article 5 as the pre-GMDSS distress and calling frequency, 156.8 MHz (channel 16). With this in mind, WRC-07 modified the International Table to provide an exclusive maritime mobile service allocation for the DSC frequency similar to the allocation provided for the maritime VHF channel 16 frequency. The impact to incumbent services, however, was minimized by maintaining existing fixed and mobile allocations in the guard bands of the DSC channel through footnotes with appropriate conditions.

Given the status of the transition to the GMDSS, WRC-07 agreed to integrate some non-GMDSS provisions from Appendix 13 into the GMDSS provisions in Chapter VII and to suppress Appendix 13. Consequentially, several Article 5 footnotes were modified to remove references to Appendix 13 and to reflect other required updates and corrections based on the regulatory review of maritime-related provisions.

In the context of introducing new technologies in the VHF maritime mobile band, significant interest was expressed in the development and advancement of satellite-based reception of Automatic Identification System (AIS) signals to permit identification and tracking of vessels at much greater distances than currently possible by terrestrial means. In response, WRC-07 added a secondary mobile satellite service (Earth-to-space) allocation to provide for satellite reception of the AIS signals on the existing AIS 1 and AIS 2 channels, 161.975 MHz and 162.025 MHz respectively.

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