Asia Pacific

  • RAFCAP – Radio Astronomy Frequency Committee in the Asia-Pacific
  • APT – Asia-Pacific Telecommunity
  • PTC – Pacific Telecommunications Council

Europe

  • CEPT – European Conference of Postal and Telecommunications Administrations
  • CRAF – Committee on Radio Astronomy Frequencies

Americas

  • CITEL – Inter-American Conference on Telecommunications
  • CORF – Committee on Radio Frequencies (USA)

International

  • IAU – International Astronomical Union
  • ITU – International Telecommunication Union
  • IUCAF – Scientific Committee on the Allocation of Frequencies for Radio Astronomy and Space Science
  • SFCG – Space Frequency Coordination Group
  • URSI – Union Radio Scientifique International