[size=x-large]after my headphone went badd i was out at a school detecting and was getting some chatter from the under ground power lines then some tennis players showed up and they brought this machine that throws the balls and i did not catch on right away to what was going on but a day later suddenly my detector was going really nuts ya i was still finding coins but it sounded like a conection was loose thought nothing of the thing that was throwing the tennis balls then today i took the musketeer out into the deep woods far from any electical interfearance at all my buddy pulled up in his ATV and my detector started going nuts again it was chirping earatikly but when he shut off his ATV it all went away so it was then i realized that what i mistook for a loose conection was electrical interferance and the machine at the tennis ball court was 150 ft away the other time i experianced this was whith my Umax and when i would turn on my garret pro pointer it would sound like something was friying and i could not get a signal on a target or it was intermitant when i turned the propointer off walaa all was fine so now i know thear is nothing wrong whith the detector which is nice it may be 5 khz is more prone to this i dont know [/size]