​​​​​​​​​​​​​​​​​​​​​Metadata Search
Metadata Search of ITU-R Recommendations / Reports is available by Series, Radio Category, Services, Cross reference , Responsible WPs, Approval year.

• ​​​​​​​​​Series​​ (ITU-R Recommendations Series / ITU-R Reports Series)​
  

  ​​​​BO	​Satellite delivery	P	Radiowave propagation	​​​​SM	​Spectrum management
  BR	​​Recording for production, archival and play-out; film for television	RA	Radio astronomy	SNG	​Satellite news gathering (ITU-R Recommendations only)
  BS	Broadcasting service (sound)	RS	Remote sensing systems	TF	Time signals and frequency standards emissions (ITU-R Recommendations only)
  ​BT	Broadcasting service (television)	S	Fixed-satellite service	V	Vocabulary and related subjects (ITU-R Recommendations only)
  F	Fixed service	SA	Space applications and meteorology
  M	Mobile, radiodetermination, amateur and related satellite services	SF	​Frequency sharing and coordination between fixed-satellite and fixed service systems​		​

• Radio Category​​
  The ITU-R Recommendations / Reports are classified into the following 14 Radio Categories.
  (One ITU-R Recommendation / Reports can have multiple or without categories.)

  1. Antenna reference patterns	8. Programme assembly
  2. Error performance/availability objectives	9. Programme production
  3. Frequency arrangements	10. Sharing/compatibility issues
  4. High Frequency (HF) systems	11. Short Range Devices (SRDs)​
  5. IMT	12. Spectrum Monitoring​
  6. National Spectrum Management issues	​​13. Technical/operational characteristics or parameters
  7. Prediction methods	14. Vocabulary​

• Services (Radio Services)
  Radio Services are defined in ​the Radio Regulations ARTICLE 1 Section III (Radio services).
  <<Hierarchy structure and abbreviation of Radio Services>>
  

(all) *no specific radio service is indicated.
(others) *​ISM, SRD, UWB, etc.
amateur (ARS)
amateur-satellite (ARSS)
broadcasting (BS)
broadcasting-satellite (BSS)
earth exploration-satellite (EESS)
fixed (FS)
fixed-satellite (FSS)
inter-satellite (ISS)
meteorological aid (MetAids)
meteorological-satellite (MetSat)
mobile (MS)	aeronautical mobile (AMS)	aeronautical mobile (OR) (AMS(OR))
		aeronautical mobile (R) (AMS(R))
	land mobile (LMS)
	maritime mobile (MMS)	port operations
		ship movement
mobile-satellite (MSS)	aeronautical mobile-satellite (AMSS)	aeronautical mobile-satellite (OR) (AMSS(OR))
		aeronautical mobile-satellite (R) (AMSS(R))
	land mobile-satellite (LMSS)
	maritime mobile-satellite (MMSS)
radio astronomy (RAS)
radiodetermination (RDS)	radiolocation (RLS)
	radionavigation (RNS)	aeronautical radionavigation (ARNS)
		maritime radionavigation (MRNS)
radiodetermination-satellite (RDSS)	radiolocation-satellite (RLSS)
	radionavigation-satellite (RNSS)	aeronautical radionavigation-satellite (ARNSS)
		maritime radionavigation-satellite (MRNSS)
safety
space operation (SOS)
space research (SRS)
special
standard frequency and time signal (SFTSS)

• ​​​​​​ ​Cross ref. (Please refer to the Radio​ Regulations ​Volume IV ​​for IBR (ITU-R Recommendations incorporated by reference) (ITU-R Recommendations only)
  There are 2 cross reference status on this search: "IBR” and “ref.”​
  “IBR“ = “incorporated by reference in the Radio Regulations”
  “ref.“=” referred to in the Radio Regulations, but not IBR”
  Reference location where the ITU-R Recommendations are referred in the Radio Regulations can be found in the each ITU-R Recommendation profile page.
  
• ​​Study Groups, Resp. WPs (Responsible Study Groups/Working Parties and ​related groups​)
• Study Groups/Working Parties

  SG1 - ​Spectrum management	WP1A - Spectrum engineering techniques WP1B - Spectrum management methodologies and economic strategies WP1C - Spectrum monitoring
  ​​SG3 - Radiowave propagation	WP3J - Propagation fundamentals WP3K - Point-to-area propagation WP3L - Ionospheric propagation and radio noise WP3M - Point-to-point and Earth-space propagation​
  SG4 - Satellite services	WP4A - Efficient orbit/spectrum utilization for FSS and BSS WP4B - Systems, air interfaces, performance and availability objectives for FSS, BSS and MSS, including IP-based applications and satellite news gathering WP4C - Efficient orbit/spectrum utilization for MSS and RDSS * - * WP4C will also deal with the performance issues related to RDSS​
  SG5 - Terrestrial services​	WP5A - Land mobile service above 30 MHz* (excluding IMT); wireless access in the fixed service; amateur and amateur-satellite services * including the exact frequency of 30 MHz WP5B - Maritime mobile service including Global Maritime Distress and Safety System (GMDSS); aeronautical mobile service and radiodetermination service WP5C - Fixed wireless systems; HF and other systems below 30 MHz in the fixed and land mobile services WP5D - IMT Systems​
  SG6 - Broadcasting service	WP6A - Terrestrial broadcasting delivery WP6B - Broadcast service assembly and access WP6C - Programme production and quality assessment​
  SG7 - Science services​	​​​WP7A - Time signals and frequency standard emissions               WP7B - Space radiocommunication applications WP7C - Remote sensing systems WP7D - Radio astronomy​

• Related Groups

  ​​​​CCV - Coordination Committee for Vocabulary

  CPM - Conference Preparatory Meeting (not used for ITU-R Recommendations / Reports)

      
• ​ ​​​Approval​​ (Approval year of the ITU-R Recommendations / Reports)

Frequency Search​​

Frequency Search is available at the "​​Se​arch ITU-R Re​​commendations by Frequency Range​​​​" (for ITU-R Recommendations) or "Se​arch ITU-R Re​​ports by Frequency Range" (for ITU-R Reports). The link to the frequency search page is provided in each Metadata Search page.​​

Full Text Search​​

Full Text Search is available at the same page as frequency search page.​

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