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Examination and Findings of Radio Astronomy Stations

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Following topics will be explained here:​

1.Examination of Radio Astronomy Stations
2.Frequency Bands Allocated to Radio Astronomy Service
3.​Frequency Bands Not Allocated to Radio Astronomy Service
4.Secondary Service
5.Formulation of Findings
6.Recording in the MIFR for Information Only
7.Protection of Service
8.Protection Considerations at Notification of Radio Astronomy Stations
9.​Examples of Published Findings



1. ​Examination of Radio Astronomy Stations

Notices of radio astronomy stations are examined by BR in accordance with No.11.31 of the Radio Regulations 



​2. Frequency Bands Allocated to Radio Astronomy Service

The table below shows the frequency allocations to radio astronomy service in Article 5 of the Radio Regulations





​3.​ Frequency Bands Not Allocated to Radio Astronomy Service

Some frequency bands in provisions of Article 5 of the Radio Regulations with reference to radio astronomy service that do not have allocation to the radio astronomy service in accordance with the Rules of Procedure



Rules of Procedure of No. 5.149

There is no allocation to radio astronomy in the bands 73-74.6 MHz (Regions 1 and 3), 1 330-1 400 MHz, 3 260-3 267 MHz, 3 332-3 339 MHz, 3 345.8-3 352.5 MHz, 6 650-6 675.2 MHz, 22.01-22.21 GHz, 22.81-22.86 GHz, 23.07-23.12 GHz, 31.2-31.3 GHz, 36.43-36.5 GHz, 168.59-168.93 GHz, 171.11-171.45 GHz (except for KOR), 172.31-172.65 GHz (except for KOR), 173.52-173.85 GHz (except for KOR) and 195.75-196.15 GHz. Notification of frequency assignments to radio astronomy stations in the bands 73-74.6 MHz (Regions 1 and 3), 1 330-1 400 MHz, 3 260-3 267 MHz, 3 332-3 339 MHz, 3 345.8-3 352.5 MHz, 6 650-6 675.2 MHz, 22.01-22.21 GHz, 22.81-22.86 GHz, 23.07-23.12 GHz, 31.2-31.3 GHz, 36.43-36.5 GHz, 168.59-168.93 GHz, 171.11-171.45 GHz (except for KOR), 172.31-172.65 GHz (except for KOR), 173.52-173.85 GHz (except for KOR) and 195.75-196.15 GHz will be considered by the Bureau not to be in conformity with the Table of Frequency Allocations.



Rules of Procedure of No. 5.556

There is no allocation to radio astronomy in the bands listed in this provision. The Board concluded that the words “national arrangements" are referring to arrangements to be made in each country. These arrangements are not required to be communicated to the Bureau. Notifications of frequency assignments to radio astronomy stations in these bands will be considered by the Bureau not to be in conformity with the Table of Frequency Allocations.

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4. Secondary Service

Secondary Service as defined in the Radio Regulations 

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5. Formulation of Findings

Rules of Procedure (ROP) §1 of No. 4.5 

1.1 A frequency assignment, of which the assigned frequency band overlaps a band not allocated to the service concerned, shall receive an unfavourable regulatory finding under No. 11.31.

1.2 A frequency assignment, of which the assigned frequency band overlaps a band allocated with a lower category of service will be considered as having the lower category of service and, when recorded, will bear a symbol to this effect. (See Symbols R and S in Table 13B, Column 13B2, of the Preface to the IFL.)


Examples of Application of the ROP​


Example 1​

 

Example 2













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6. Recording in the MIFR for Information Only

Application of Nos. 4.4 and 8.4 of the Radio Regulations


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7. Protection of Service

Illustration of protection accorded to service when recorded with favourable or unfavourable finding in the Master International Frequency Register (MIFR)


Case A - Notification with one large block of frequency band



​Case B- Alternate notification of Case A into 4 different blocks of frequency bands

 

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8. Protection Considerations at Notification of Radio Astronomy Stations​

   Possible to represent a large observation frequency band to several smaller observation frequency bands

  • This will allow the appropriate allocation status for radio astronomy service to be reflected in the findings when recorded in the MIFR
 
  • The radio astronomy service can then benefit from the protection accorded to it according to the allocation status in the frequency band       of the observation bandwidth
 
  • Responsibility of administrations to prepare and submit filings and to comply with the applicable provisions of the Radio Regulations
 
  • The examination of the radio astronomy service​​ notification will be based on
 
            • the information submitted by the administrations in the RR Appendix 4 notice form
            • relevant rules of procedure to formulate findings 

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9.​ Examples of Published Findings



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