I think the size thing has been handled. http://web.usna.navy.mil/~bruninga/balloons.html Apparently several governments are working on a Differential GPS system that will give much higher resolution in the near future. Still won't be good enough for spot landing, I think. Thanks ________________________________________________________________________ Eric Weder, P. Eng. Calgary, Alberta, Canada Kenonic Controls Ltd. [EMAIL PROTECTED] Work: (403)258-6237 Cell: (403)607-9617 [EMAIL PROTECTED] Home: (403)289-8844 -----Original Message----- From: Y.K.Chan [mailto:[EMAIL PROTECTED]] Sent: May 1, 2000 11:44 PM To: RCSE Subject: Re: [RCSE] GPS SA Eliminated!! The next goal for GPS terminal is size and weight reduction. It helps to report thermal location in by the thermal-pilot plane or any plane that is capable to down link GPS info. The out look goal is to reduce GPS accuracy down to inches. For what? Landing contest is it. ;-) YK Chan in Seattle. RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]