As part of a group of ham radio operators that enjoys experimenting with high attitude weather balloons we are now getting ready to try a new adventure, this will involve using special balloons that have been known to stay up for as long as two years and circle the world several times. We have been successful with the high attitude balloons, such as the one we launched at the end of August last year, (2019).
Our original intention was to send this balloon up to about 130,000 feet, but the computer models of the upper level wind currents at the time suggested that if we sent it up that high...
