Publication: Magyar Közlöny
Issue: MK-2007-70 (Year: 2007, Number: 70)
Era: 2004-2010
Section: Melléklet a 2007. évi XLVI. törvényhez
Paragraph Index: 4189

c) offset frequency simplex. *Single channel simplex. Simplex using the same frequency channel in each direction. 2. For use in aeronautical fixed service planning *Aeronautical fixed service (AFS). A telecommunication service between specified fixed points provided primarily for the safety of air navigation and for the regular, efficient and economical operation of air services. *Aeronautical fixed telecommunication network (AFTN). A worldwide system of aeronautical fixed circuits provided, 2007/70/II. szám ANNEX 10 — VOLUME II ATT A-1 1/11/01 ATTACHMENTS TO ANNEX 10 — VOLUME II Attachment A to Volume II — LIST OF SPECIALIZED COM TERMS AND THEIR DEFINITIONS RELATED TO AERONAUTICAL TELECOMMUNICATIONS PLANNING On 25 March 1964 the Council at the 11th Meeting of its Fifty-first Session approved the following list of specialized communication terms and their definitions for general use within ICAO. The Council further requested States to use the terms in the approved manner in particular in correspondence with ICAO, in working papers presented by them to ICAO meetings and in any other appropriate texts. Those terms which are marked with an asterisk are already used and defined in the main body of Annex 10 while the remaining terms were selected as terms in general use by aeronautical telecommunications people but having caused difficulty at some ICAO meetings or having resulted in the development of conflicting definitions by different meetings. 1. For general use *Aeronautical telecommunication agency. An agency responsible for operating a station or stations in the aeronautical telecommunication service. *Aeronautical telecommunication service. A telecommunication service provided for any aeronautical purpose. *Aeronautical telecommunication station. A station in the aeronautical telecommunication service. *Aircraft operating agency. The person, organization or enterprise engaged in, or offering to engage in, an aircraft operation. *Double channel simplex. Simplex using two frequency channels one in each direction. Note.— This method was sometimes referred to as cross band. *Duplex. A method in which telecommunication between two stations can take place in both directions simultaneously. *Frequency channel. A continuous portion of the frequency spectrum appropriate for a transmission utilizing a specified class of emission. Note.— The classification of emissions and information relevant to the portion of the frequency spectrum appropriate for a given type of transmission (bandwidths) are specified in the ITU Radio Regulations, Article S2 and Appendix S1. *International telecommunication service. A telecommunication service between offices or stations of different States, or between mobile stations which are not in the same State, or are subject to different States. *Offset frequency simplex. A variation of single channel simplex wherein telecommunication between two stations is effected by using in each direction frequencies that are intentionally slightly different but contained within a portion of the spectrum allotted for the operation. *Simplex. A method in which telecommunication between two stations takes place in one direction at a time. Note.— In application to the aeronautical mobile service this method may be subdivided as follows:

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