wrote in message Many ground stations
already use
wireless from a remote sensor, so my idea is to send the measuring
device up on a balloon MAYBE ON A STRING for re-use.

.... ah, the days of the Cardington BALTHUM! All the useful stuff has
gradually been removed. Your idea is a good one - how do we fit in with
ATC regulations if balloons are flying to 1000 ft or so? Round here
(Bracknell) we'd interfere with the helicopter traffic.

Martin.

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