A professor in electronics, living far from town wrote in a paper, how to make a good TV antenna, he wrote about reflector, director, 1/4 lambda spacing etc and ended up saying "my son defies that and have put all kinds of alluminum pieces, including kitchen utensils on the antenna and gets perfect TV reception with NO INTERFERENCE".

Moral of the story:

For an aeromodeller, practical, proven methods are better than the theory in text books.