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ATTACHMENT 2

Agenda Item9:Interference from non-aeronautical sources

RADIO INTERFERENCE IN MONGOLIA

(Presented by Mongolia)

SUMMARY
This information paper is to inform Working Group-F about the radio interference issues in Mongolian aeronautical radio frequency usage.
  1. Introduction

1.1Mongolia regulates the use, allocation and protection of the radio frequencies under the Law of Radio frequency with the support of the Communications Regulatory Commission of Mongolia.

1.2Communications Regulatory Commission of Mongolia agrees on the allocation of radio frequency with the International Civil Aviation Organization (ICAO) and the International Telecommunication Union (ITU), and grants the certificate to use the radio frequency based on an agreement. This agreement regulates the relationship between the frequency user and authorizer, and also covers the issue of radio frequency protection.

  1. Discussion

2.1Due to the large territory with scarcely populated areas throughout Mongolia, the use of radio communication is increasing in urban and rural areas significantly. However, the regulation and monitoring of radio frequency use are still unsatisfactory. Aeronautical radio frequency interferences are increasing in the territory of Mongolia. The source of interference is varying including, electric facility malfunction, Local FM stations and radio communications of mining companies.

2.2According to the investigation in the SHAND site interference, the local FM station 100.9 MHz frequency was the reason for interfering VHF RCAG station radio frequency. This FM station’s facility did not meet the requirement of the Communications Regulatory Commission of Mongolia.

2.3The local FM106.2 MHz station with 43m high antenna facility was causing interference to Undurkhaan RCAG station’s radio frequency. Recently, CAAM discovered radio frequency interference on Khentii 122 MHz sector of Area Control Centre 14November 2013.

2.4The source of interference was unknown, so CAAM shifted the frequency 122MHz to 127MHz.Also there were situations like electric facilities causing interference to the RCAG VHF in particular sites in Mongolia.

  1. Conclusion

3.1Although CAAM and the Communications Regulatory Commission of Mongolia are cooperating in order to reduce the issues of radio frequency interference, it is still being inadequate. However, currently CAAM is working closely with the Communications Regulatory Commission of Mongolia to make amendments to the current regulatory framework for the usage of radio frequencies for non-aeronautical purposes in order to reduce frequency interference.

  1. Action by the meeting

4.1The meeting is invited to note the information contained in this paper.

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