i hunted my local beach for a 1/2 hr today, i got near a powerline, and the vision went crazy, sounded like a arcade game. i was in the salt beach program. i tried to off set frequency, tried to lower rx gain with no result. anyone know anyway to stop it from going crazy near powerlines? i would really appreciate replies. i also tried correlate and single 2.5 frequency. any other ideas i can try? thanks keith