Ouch, Get any ideas of doing something out of your head quickly.... You are talking about flying a moderate sized aircraft that can do damage to life and property of others if it goes out of control. Don't even think about it. Even helium filled balloons need FAA clearance and they rise straight up and move very slowly and are large and brightly colored to boot!! As if that isn't enough, consider what happens when your high flying cell phone transmitter brings up 20 or 30 cells that try to pass you off to the strongest cell site and your link goes away because you get passed off so many times. Keep in mind also, your receiver will hear a cell signal on nearly all of it's possible channels, and it's not likely that your receiver will be designed to handle such a multitude of signals either. If you decide to do it anyway, please don't fly it over Maine. Thanks, Art -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu