Photos of the new Sippican and Interment GPS Radiosonde under Development.

Both radiosonde types shown below use the Global Positioning System (GPS) to measure winds aloft.  

Prototype Intermet GPS Radiosonde.  This radiosonde was tested by NWS but will not be when RRS is first deployed

Prototype Sippican GPS Radiosonde.  The cylinder at top is the twine dereeler.

Another view of the prototype Sippican radiosonde.

Here's the GPS receiver attached to the tracking system radome.

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