I never believed in these things 'til recently and decided 2 build one for experimental purposes. Will test my unit from El Paso TX 2 LA. If this 12/24 volt unit gets me 'at least' a 5% BFM I'll immediately start working on a 120/150 volt system. -Then I'll IF I get at least a 10% BFM on this system I'll go 4 a 220-250 volt apparutus. Wish me luck! God Bless