CEPT T R 42-01 E-1991 Designation of Frequency Bands for the Pan-European Terrestrial Flight Telephone System (TFTS) (Helsinki 1991)《全欧洲地面导航电信系统(TFTS)频带的指定》.pdf
《CEPT T R 42-01 E-1991 Designation of Frequency Bands for the Pan-European Terrestrial Flight Telephone System (TFTS) (Helsinki 1991)《全欧洲地面导航电信系统(TFTS)频带的指定》.pdf》由会员分享,可在线阅读,更多相关《CEPT T R 42-01 E-1991 Designation of Frequency Bands for the Pan-European Terrestrial Flight Telephone System (TFTS) (Helsinki 1991)《全欧洲地面导航电信系统(TFTS)频带的指定》.pdf(3页珍藏版)》请在麦多课文档分享上搜索。
1、STD-CEPT T/R 42-01 E-ENGL 1991 = 2326414 0014b90 229 W TIR 42-01 E Page 1 Distribution: B Recommendation T/R 4201 (Helsinki 1991) DESIGNATION OF FREQUENCY BANDS FOR THE PAN-EUROPEAN TERRESTRIAL FLIGHT TELEPHONE SYSTEM (TFS) Recommendation proposed by the ”Frequency Management” Working Group T/WG 18
2、(FM) Text of the Recommendation adopted by the “European Radiommunications Committee” (ERCJ: INTRODUCTION The TPTS will provide telecommunications sexvices for passengers on board aircraft. The system will provide telephony using digital voice coding techniques, some data services and a facsimile se
3、rvice. The radio structure of the system will be of a cellular nature. “The European Conference of Postal and Telecommunications Administrations, considering that the introduction of the TFTS has become urgent, that ETSI is well advanced with the development of an I-ETS for the TPTS, that several Eu
4、ropean Network Operators have signed an MOU on the introduction of the TFS with a planned date of introduction at the beghning of 1993, that several airlines, the European Airlines Electronics Committee (EAEC), the Airlines Electronic Engineering Committee (AEEC) and the Socit Internationale de Tlco
5、mmunications Ahnautiques (SITA), are working closely with ETSI on the introduction of TFTS, that it is necessary to provide a common frequency spectrum designation for the provision of a pan- European TPTS, that market studies have indicated that the required spectrum will be as 2 x 1 MHz by 1993,2
6、x 3 MHZ by 1994and25MHzby1998, that the WARC (MOB-87) frequency specrum allocations for TFTS were provided for pre-operational and experimental systems, and do not enable the expansion of TFS, that the use of WARC (MOB-87) fiequency spectrum allocations may result in harmful interference to primary
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