RECOMMENDATION ITU-R F.752-1 - DIVERSITY TECHNIQUES FOR RADIO-RELAY SYSTEMS ANNEX 1 - Diversity techniques for radio-relay systems 1. Methods of obtaining diversity signals 2. Methods of processing signals 2.1 Arrangements 2.2 Implementation considerations 2.3 Minimum BER or weighted strategy 3. Applications in trans-horizon systems 3.1 Types of diversity 3.2 Types of combiners 4. Applications in line-of-sight systems 4.1 Single-frequency signal power loss considerations 4.2 Dispersion considerations 4.3 Evidence from propagation data 4.4 Dispersion statistics