Tra cứu Tiêu chuẩn quốc tế

ITU-R SF.4-9/BL/1 (02/02)

Draft Revision of Rec. ITU-R SF.1481 - Frequency sharing between systems in the fixed service using high-altitude platform stations and satellite systems in the geostationary orbit in the fixed-satellite service in the bands 47.2-47.5 and 47.9-48.2 GHz - (Questions ITU-R 251/4 and ITU-R 218/9)

Draft Revision of Rec. ITU-R SF.1481 - Frequency sharing between systems in the fixed service using high-altitude platform stations and satellite systems in the geostationary orbit in the fixed-satellite service in the bands 47.2-47.5 and 47.9-48.2 GHz - (Questions ITU-R 251/4 and ITU-R 218/9)

ITU-R SF.4-9/BL/2 (05/02)

Draft new Recommendation ITU-R SF.[Doc.4/80-9/101] - Methodology to evaluate the impact of space-to-Earth interference from the fixed-satellite service to the fixed service in frequency bands where precipitation is the predominant fade mechanism

Draft new Recommendation ITU-R SF.[Doc.4/80-9/101] - Methodology to evaluate the impact of space-to-Earth interference from the fixed-satellite service to the fixed service in frequency bands where precipitation is the predominant fade mechanism

ITU-R SM 1/BL/2 (03/10)

Draft new Recommendation ITU-R SM.[DVB-T-COVERAGE] - DVB T coverage measurements and verification of planning criteria

Draft new Recommendation ITU-R SM.[DVB-T-COVERAGE] - DVB T coverage measurements and verification of planning criteria

ITU-R SM.1/150(Rev.1)

Draft revision of Recommendation ITU-R SM.1839 - Test procedure for measuring the scanning speed of radio monitoring receivers

Draft revision of Recommendation ITU-R SM.1839 - Test procedure for measuring the scanning speed of radio monitoring receivers

ITU-R SM.1/152(Rev.1)

Draft revision of Recommendation ITU-R SM.854-2 - Direction finding and location determination at monitoring stations

Draft revision of Recommendation ITU-R SM.854-2 - Direction finding and location determination at monitoring stations

ITU-R SM.1/154(Rev.1)

Draft modification of Annex 8 to Recommendation ITU-R SM.1541-3 - OoB domain emission limits for primary radar systems

Draft modification of Annex 8 to Recommendation ITU-R SM.1541-3 - OoB domain emission limits for primary radar systems

ITU-R SM.1/157(Rev.1)

Draft revision of Recommendation ITU-R SM.1723-1 - Mobile spectrum monitoring unit

Draft revision of Recommendation ITU-R SM.1723-1 - Mobile spectrum monitoring unit

ITU-R SM.1/160(Rev.1)

Draft revision of Recommendation ITU-R SM.1682 - Methods for measurements on digital broadcasting signals

Draft revision of Recommendation ITU-R SM.1682 - Methods for measurements on digital broadcasting signals

ITU-R SM.1/161(Rev.1)

Draft revision of Recommendation ITU-R SM.1708 - Field-strength measurements along a route with geographical coordinate registrations

Draft revision of Recommendation ITU-R SM.1708 - Field-strength measurements along a route with geographical coordinate registrations

ITU-R SM.1/167(Rev.1)

Draft revision of Recommendation ITU-R SM.1879 - The impact of power line high data rate telecommunication systems on radiocommunication systems

Draft revision of Recommendation ITU-R SM.1879 - The impact of power line high data rate telecommunication systems on radiocommunication systems

ITU-R SM.1/BL/3 (2014)

Test procedure for measuring direction finder immunity against multi-path propagation

Test procedure for measuring direction finder immunity against multi-path propagation

ITU-R SNG.1421-0 (11/99)

Common operating parameters to ensure interoperability for transmission of digital television news gathering

Common operating parameters to ensure interoperability for transmission of digital television news gathering

ITU-R BS.1114-10*ITU-R BS.1114

Systems for terrestrial digital sound broadcasting to vehicular, portable and fixed receivers in the frequency range 30-3000 MHz

ITU-R BS.1116-3*ITU-R BS.1116

Methods for the subjective assessment of small impairments in audio systems

ITU-R BS.1194-2*ITU-R BS.1194

System for multiplexing frequency modulation (FM) sound broadcasts with a sub-carrier data channel having a relatively large transmission capacity for stationary and mobile reception

ITU-R BS.1195-1*ITU-R BS.1195

Transmitting antenna characteristics at VHF and UHF

ITU-R BS.1196-7*ITU-R BS.1196

Audio coding for digital broadcasting

ITU-R BS.1283-1*ITU-R BS.1283

A guide to ITU-R Recommendations for subjective assessment of sound quality

ITU-R BS.1284-2*ITU-R BS.1284

General methods for the subjective assessment of sound quality

ITU-R BS.1285-0*ITU-R BS.1285

Pre-selection methods for the subjective assessment of small impairments in audio systems