ITU Radio Regulations and Space Security Standards
RR Chapter V: Administrative provisions – ITU Radio Regulations and Space Security Standards

ITU Radio Regulations and Space Security Standards RR19.II-VII: RR Article 19, Sections II to VII: Call signs, selective call numbers and maritime mobile service identities

What does RR19.II-VII require?

Stations open to international public correspondence, amateur stations and others that can cause harmful interference beyond their territory take call signs from the international series allotted to their administration in Appendix 42 (19.29); mobile stations in automated systems must be uniquely identifiable for distress, interference avoidance and billing (19.31A); each administration chooses and assigns call signs, selective call numbers and maritime mobile service identities from its allocated series and MIDs, following Annex 1 to Rec. ITU-R M.585 (19.38, 19.39, 19.96, 19.97, 19.111); call signs are formed as Section III prescribes, with combinations confusable with distress or reserved signals excluded (19.45 to 19.71, space-service call signs recommended as two characters and two or three digits); radiotelephony identification follows Section IV.

Maintained by Gerard BlokdykVerified against the published standard Control text last updated

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