5.64 5.67 5.67B 5.64 5.64 5.67B 137.8–148.5 FIXED MARITIME MOBILE 5.64 5.67 137.8–160 FIXED MARITIME MOBILE 5.64 137.8–160 FIXED MARITIME MOBILE RADIONAVIGATION 5.64 148.5–255 BROADCASTING 160–190 FIXED 160–190 FIXED Aeronautical Radionavigation 190–200 AERONAUTICAL RADIONAVIGATION 5.68 5.69 5.70 kHz 255 (200)–405 Allocation to Services Region 1 Region 2 Region 3 200–275 AERONAUTICAL RADIONAVIGATION Aeronautical Mobile 200–285 AERONAUTICAL RADIONAVIGATION Aeronautical Mobile 255–283.5 BROADCASTING AERONAUTICAL RADIONAVIGATION 5.70 5.71 275–285 AERONAUTICAL RADIONAVIGATION Aeronautical Mobile Maritime radionavigation (radiobeacons) 283.5–315 AERONAUTICAL RADIONAVIGATION MARITIME RADIONAVIGATION (radiobeacons) 5.73 285–315 AERONAUTICAL RADIONAVIGATION MARITIME RADIONAVIGATION (radiobeacons) 5.73
5.72 5.74 315–325 AERONAUTICAL RADIONAVIGATION Maritime radionavigation (radiobeacons) 5.73 5.72 5.75 315–325 MARITIME RADIONAVIGATION (radiobeacons) 5.73 Aeronautical radionavigation 315–325 AERONAUTICAL RADIONAVIGATION MARITIME RADIONAVIGATION (radiobeacons) 5.73 325–405 AERONAUTICAL RADIONAVIGATION 325–335 AERONAUTICAL RADIONAVIGATION Aeronautical mobile Maritime radionavigation (radiobeacons) 325–405 AERONAUTICAL RADIONAVIGATION Aeronautical mobile 5.72 335–405 AERONAUTICAL RADIONAVIGATION Aeronautical mobile kHz 405–505 Allocation to Services Region 1 Region 2 Region 3 405–415 RADIONAVIGATION 5.76 5.72 405–415 RADIONAVIGATION 5.76 Aeronautical mobile 415–435 MARITIME MOBILE 5.79 AERONAUTICAL RADIONAVIGATION 5.72 415–472 MARITIME MOBILE 5.79 Aeronautical radionavigation 5.80 5.77 5.78 5.82 435–472 MARITIME MOBILE 5.79 5.79A Aeronautical radionavigation 5.77 5.82 472-479 MARITIME MOBILE 5.79
administrations to stations operating under authority granted by the administration concerned, for the purpose of serving one or more aircraft operating agencies. Such assignments are to provide communications between an appropriate aeronautical station and an aircraft station anywhere in the world for exercising control over regularity of flight and for safety of aircraft. World-wide frequencies are not to be assigned by administrations for MWARA, RDARA and VOLMET purposes. Where the operational area of an aircraft lies wholly within a RDARA or Sub-RDARA boundary, frequencies allotted to those RDARAs and Sub-RDARAs shall be used. Appendix 27 designates the carrier frequencies 3 023 kHz and 5 650 kHz (RR 27/232 to RR 27/238) for common use on a worldwide basis. RR 27/236 permits these frequencies to be used by other mobile services for air-surface search and rescue operations. 5.111 and 5.115 (WRC-07) and Appendix 15 of the Radio Regulations also specify these frequencies for specific distress and safety purposes (coordinated search and rescue operations). The relevant provisions of Appendix 27 of the Radio Regulations are reproduced in Section 7-II — Band 2 023 kHz and 5 680 kHz of this handbook. Appendix 27 RR 27/19 specifically recognizes the coordination role of ICAO, with particular reference to the operational use of frequencies in the Allotment Plan. This activity is coordinated at regional air navigation meetings where regional requirements and frequencies for long-range communications are agreed. Such agreements need to be registered with the ITU MIFR through the national telecommunication administrations. Appendix 27 contains provisions for adaptation of the allotment and frequency assignment procedures. These provisions allow administrations to assign frequencies which are not identified in the Allotment Plan under the condition that such frequency assignments will not reduce the protection of frequencies which are in the Allotment Plan. After proper coordination by the national telecommunication authorities of such frequency assignments with
COMMENTARY: Channel spacing The Special COM/OPS/95 discussed the shortage of assignable VHF channels necessary to support the growth in air traffic in the years ahead. This scarcity situation occurred in 1992 in the core area of Europe and is expected to expand into other areas or regions with the increase in air traffic. Note.— The core area in Europe includes Austria, Belgium, Denmark, France, Germany, Ireland, Luxembourg, Netherlands, Switzerland and the United Kingdom. The Special COM/OPS/95 agreed to a near-term improvement by using a VHF voice system based on 8.33 kHz channel spacing while recognizing that not all ICAO regions would need to apply this new Standard. Recommendation 6/1 from this divisional meeting, endorsed by the Air Navigation Commission, called for SARPs for 8.33 kHz channel spacing DSB-AM to be incorporated in Annex 10 (Appendix B to the report on Agenda Item 6 refers). These SARPs were adopted by the ICAO Council in 1996. Implementation of 8.33 kHz channel spacing is subject to regional agreement. Implementation of 8.33 kHz channel spacing in a limited form, i.e. for upper airspace services initially, started around 2000 in Europe under the aegis of ICAO, assisted by the European Organization for the Safety of Air Navigation (EUROCONTROL) in a coordination/planning role. The mandatory carriage of 8.33 kHz radio equipment was introduced for flights above FL 195 in the ICAO EUR region in 2007. Further expansion of the use of 8.33 kHz channel spacing to all airspace is planned for around 2018 in Europe. Many other regions can continue to meet their requirements for VHF channels using 25 kHz channel spacing for some years
ICAO POLICY No change to the radionavigation allocations in Region 2 and Region 3. AVIATION USE: These bands supplement the 15.4–15.7 GHz band for airport surface detection equipment (ASDE). The higher frequency provides greater target resolution although performance in precipitation, such as rain and fog, is inferior. Footnote 5.533 should be noted. COMMENTARY: In 1997 the need to retain this allocation was reconfirmed. The ASDE requirement assumes greater priority with increasing airport congestion.