Op.2
Cooperation with the International Special Committee on Radio Interference
Note - Suppressed (2011)
Op.14
Preferred radio-frequency channel arrangements for radio-relay links for international connections
Note - Suppressed (2012)
Op.15
Broadcasting in the 26 MHz Band
Note - Suppressed (2013)
Op.16
Organizations qualified to set standards on sound and television recording
Note - Suppressed (2013)
Op.22
Routine ionospheric sounding
Op.23
Observations needed to provide basic indices for ionospheric propagation
Op.38
Exchange of monochrome and colour television programmes via satellites
Note - Suppressed (2008)
Op.40
Subjective assessment of the quality of television pictures
Note - Suppressed (2013)
Op.50
Coordination of the work of the ITU-R and the International Electrotechnical Commission (IEC) on measurements for the adjustment and maintenance of radio-relay systems
Note - Suppressed (2012)
Op.51
Study of digital techniques by Radiocommunication Study Groups and Telecommunication Standardization Study Group 9
Note - Suppressed (2012)
Op.56
Location of interface between Radiocommunication Study Group 4 and ITU-T responsibilities for digital network Recommendations
Note - Suppressed (2008)
Op.68
Data bank of HF sky-wave signal intensity measurements
Op.69
Field-stength measurements for frequencies below about 1.7 MHz
Note - Suppressed
Op.71
Documentation of time transmissions
Op.74
Systems for signal interface connection between sound-broadcasting receivers and associated equipment
Note - Suppressed (2009)
Op.75
Systems for signal interface connection between television receivers and associated equipment
Note - Suppressed (2009)
Op.83
Data broadcasting services
Note - Suppressed (2011)
Op.85
Measurements of the characteristics of atmospheric radio noise
Note - Suppressed
Op.90
Equipment interconnection in professional programme production installations
Note - Suppressed (2013)
Op.91
World Atlas of Ground Conductivities
Op.92
Support and harmonization of International Mobile Telecommunications (IMT) activities
Op.93
Use of communications satellites for a service of two-way time and frequency transfer
Note - Suppressed (2008)
Op.94
Time and frequency transfer using digital telecommunication networks
Note - Suppressed (2017)
Op.95
Cooperation and harmonization in the future activities of the Radiocommunication (ITU-R) and Telecommunication Standardization (ITU-T) Sectors
Op.96
Future use of the global navigation satellite system (GNSS) for high-precision time transfer
Note - Suppressed (2017)
Op.97
Operational use of geostationary direct TV satellites for time transfer
Note - Suppressed (2008)
Op.98
Spectrum requirements of meteorological aids in the frequency range from 400.15 to 406 MHz
Note - Suppressed (2018)
Op.99
Time scale based on pulsar timing
Op.100
Compatibility considerations regarding the use of radio frequencies for purposes not considered within the Radio Regulations or other relevant ITU publications
Op.101
Worldwide land cover databases
Op.102
The use of UHDTV and/or HDR-TV image systems in television image capture to post-produce HDTV programmes of improved picture quality
Op.103
The activation of radio broadcasting receivers in smart/mobile telephones and tablets
Op.104
Advice for sustainability strategies incorporating carbon offsetting policies