RECOMMENDATION ITU-R BS.1348 - SERVICE REQUIREMENTS FOR DIGITAL SOUND BROADCASTING TO VEHICULAR, PORTABLE AND FIXED ...
ANNEX 1 - Broadcasting service requirements for any HF digital system
1 Introduction
2 Technical performance characteristics
    2.1 The ...
    2.2 Audio performance characteristics at the receiver
    2.3 Co-channel and adjacent channel protection requirements
    2.4 Reception reliability
    2.5 Equipment and equipment compatibility requirements
    2.6 Receiver operational characteristics
    2.7 Data and other transmission requirements
    2.8 Digital HF system operational requirements