Distortion of radio wave signals by wind turbines

Power-generating wind turbines are becoming more widespread and of larger size. Evidence of distortion caused to terrestrial television broadcast services by some of these prompted the IBA into studying the problem, the results of which are given in this paper. These results should have some relevance to any form of radio wave service. Some references are given to existing literature, the theory is discussed and extended, experiments using microwaves and a model of a turbine are reported as well as measurements made round an actual turbine. Proposals are then made for a way in which the degree of damage caused to radio wave services may be predicted. Thus, the paper provides a way in which radio wave and wind turbine engineers may work together to find sites and other parameters which will allow harmonious co-existence.