We have some high tension lines ( not very high though) at the far N end of our field they are just outside of our flying zone but occaisionally we fly above them. we have notice that if a plane gets low and visually behind the lines they glitch or crash. I don't know but suspect the signal is blocked to a degree in this case. Courtesy is to go with some who just crashed and I often do except when they go into the wooly @&*$ past those wires![sm=72_72.gif]