ITU-R M 690-3-2015 Technical characteristics of emergency position-indicating radio beacons operating on the carrier frequencies of 121 5 MHz and 243 MHz《工作在121 5 MHz和243 MHz载波频率的应.pdf
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1、 Recommendation ITU-R M.690-3 (03/2015) Technical characteristics of emergency position-indicating radio beacons operating on the carrier frequencies of 121.5 MHz and 243 MHz M Series Mobile, radiodetermination, amateur and related satellite services ii Rec. ITU-R M.690-3 Foreword The role of the Ra
2、diocommunication Sector is to ensure the rational, equitable, efficient and economical use of the radio-frequency spectrum by all radiocommunication services, including satellite services, and carry out studies without limit of frequency range on the basis of which Recommendations are adopted. The r
3、egulatory and policy functions of the Radiocommunication Sector are performed by World and Regional Radiocommunication Conferences and Radiocommunication Assemblies supported by Study Groups. Policy on Intellectual Property Right (IPR) ITU-R policy on IPR is described in the Common Patent Policy for
4、 ITU-T/ITU-R/ISO/IEC referenced in Annex 1 of Resolution ITU-R 1. Forms to be used for the submission of patent statements and licensing declarations by patent holders are available from http:/www.itu.int/ITU-R/go/patents/en where the Guidelines for Implementation of the Common Patent Policy for ITU
5、-T/ITU-R/ISO/IEC and the ITU-R patent information database can also be found. Series of ITU-R Recommendations (Also available online at http:/www.itu.int/publ/R-REC/en) Series Title BO Satellite delivery BR Recording for production, archival and play-out; film for television BS Broadcasting service
6、(sound) BT Broadcasting service (television) F Fixed service M Mobile, radiodetermination, amateur and related satellite services P Radiowave propagation RA Radio astronomy RS Remote sensing systems S Fixed-satellite service SA Space applications and meteorology SF Frequency sharing and coordination
7、 between fixed-satellite and fixed service systems SM Spectrum management SNG Satellite news gathering TF Time signals and frequency standards emissions V Vocabulary and related subjects Note: This ITU-R Recommendation was approved in English under the procedure detailed in Resolution ITU-R 1. Elect
8、ronic Publication Geneva, 2015 ITU 2015 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without written permission of ITU. Rec. ITU-R M.690-3 1 RECOMMENDATION ITU-R M.690-3 Technical characteristics of emergency position-indicating radio beacons operating
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- ITURM69032015TECHNICALCHARACTERISTICSOFEMERGENCYPOSITIONINDICATINGRADIOBEACONSOPERATINGONTHECARRIERFREQUENCIESOF1215MHZAND243MHZ

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