Actually, I stumbled across the recording of a webinar from a company called Vidovation - on YouTube. It doesn't have anything to do with UAVs but it is all about video transmission issues of professional broadcasters and how the company helps to solve those issues. After watching the whole video several times I felt like I had taken a college course in RF transmission. It helped my understanding of potential problems and potential solutions more than I could have possibly figured out in YEARS of flying on my own. Although the lecture goes far beyond what we as UAV pilots are likely to want, need, or be able to afford, I highly recommend viewing it for the theory.