Replacement Radiosondes for the National Logistics Support Center in Grandview, MO.

y of RFO FAR 6.103-1, with Vaisala for replacement radiosondes (p/n RS41-SGP) to be delivered to the National Logistics Support Center in Grandview, MO. The sole source determination is based on NOAA�s Sole Source Justification. The RS41-SGP has been utilized since the inception of Automatic Radioso

nde Observing Systems (AROS) into the National Weather Service (NWS). While the remaining NWS AROS sites have since transitioned to the RS41-SG model, which lacks a pressure sensor, the Barrow, AK site has remained a SGP site. This decision