We will need to find the payload after it lands so that we can get the video from the camera. It is possible that the wind will blow the balloon over 100 miles from the launch site so we need to put something in the payload that will help us to find it. There is an online flight predictor here.
One device we could use is called a GPS tracker. This is a small box of electronics that uses signals from satellites to work out its location in the same way a car 'satnav' does. The tracker then broadcasts a radio message with the co-ordinates for its location and we can use this to work out where it is.
Have a look at the Cattrack Live 3 tracker shown on the right. Can you guess what it was designed for? Click here for more information about it.
Do you think the Cattrack Live 3 would be suitable for our mission? Why? Why not?
Do you think one tracker is enough or should we have more than one, in case one fails?
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