RM series : mobile , radiodetermination, amateur and related satellite services: CCIR recommendations (new and revised as of 22 September 1992) / International Telecommunication Union
RPN series : propagation in non-ionized media: CCIR recommendations (new and revised as of 8 October 1992) / International Telecommunication Union
RSM series : spectrum management: CCIR recommendations (new and revised as of 30 September 1992) / International Telecommunication Union
RTF, RSA and RRA series : science services: CCIR recommendations (new and revised as of 9 August 1992) / International Telecommunication Union