RECOMMENDATION ITU-R P.617-1* - PROPAGATION PREDICTION TECHNIQUES AND DATA REQUIRED FOR THE DESIGN OF ... ANNEX 1 1. Introduction 2. Transmission loss for diffraction paths 3. Transmission loss distribution on tropospheric scatter paths 3.1 Average annual median transmission loss distribution for time percentages greater than 50% 3.2 Average worst-month median transmission loss distribution for time percentages greater than 50% 3.3 Average annual median transmission loss distribution for time percentages less than 50% 4. Diversity reception 4.1 Space diversity 4.2 Frequency diversity 4.3 Angle diversity 5. Effect of the siting of stations APPENDIX 1 - Additional supporting material 1. Seasonal and diurnal variations in transmission loss 2. Frequency of rapid fading on tropospheric scatter paths 3. Transmissible bandwidth