This video provides a technical introduction to tropospheric scattering, or “troposcatter,” and how troposcatter is used for beyond line of sight communications at VHF and UHF.  

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Understanding VHF Propagation: Understanding VHF Propagation

Test and Measurement Fundamentals Playlist:  Test & Measurement Fundamentals

Timeline:
00:00 Introduction
00:17 Suggested viewing
00:38 Atmospheric layers and radio propagation
01:45 About tropospheric variations
02:46 About troposcatter
03:38 How troposcatter works
04:17 Dimensions of the common volume
05:16 Overcoming signal loss
06:04 Advantages of troposcatter
07:09 Achievable distances with troposcatter
08:09 Troposcatter antennas
09:03 Antenna placement / orientation
10:02 “Gain loss”
10:50 Troposcatter and frequencies
12:01 Fading in troposcatter
13:15 Antenna diversity in troposcatter
14:24 Space diversity
15:02 Angle diversity
15:34 About troposcatter systems
16:20 Throughput of troposcatter systems
17:07 Future of troposcatter
17:57 Summary