- Unpack and fill the balloon.
- Prepare the optional sounding accessories.
- Unpack the radiosonde and the unwinder. Attach the unwinder to the balloon. See RS41 Unwinder Quick Guide for illustrations.
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Prepare the radiosonde with the ground check device.
When the radiosonde is prepared outdoors with Ground Check Device MWH322, Vaisala recommends that the radiosonde is prepared in its cardboard package to provide extra protection for the radiosonde sensor. Remove the foil bag before the preparations.
- Attach the radiosonde to the unwinder.
- Launch the radiosonde balloon.
- Monitor the sounding with the sounding system. See the sounding system documentation for more information.