Vaisala RS41 - Manual (Page 26)

User's Guide ______________________________________________________________________
24 ___________________________________________________________________M211667EN-A
Before launching the radiosonde, bend the sensor boom to the correct
sounding position using the unwinder stick: push the unwinder stick to
its position at the end of the radiosonde. As you push, the unwinder
stick pushes the sensor boom to the bent position and the unwinder snap
lock clicks into place. Make sure that the unwinder is firmly attached to
the radiosonde. See
Figure 8 on page 24 and Figure 9 on page 24 .
308-035 Figure 8 Pushing the Unwinder to Place
1308-037 Figure 9 Unwinder Stick Locking into Place