Artifacts
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Artifact
This atomic clock was built for the first GPS satellites in the late 1970s.
Artifact
The DAGR was an improvement on the PLGR, providing map data in a lighter hand-held device.
Artifact
Roy Bardole used this touch-screen computer and an antenna (not shown) to receive enhanced GPS signals for working corn and soybean acreage in Iowa.
Artifact
This equipment made up a prototype emergency location service based on GPS positioning.
Artifact
A hand-held GPS receiver that provided geographic coordinates and a graphical display.
