Vaisala, Inc model number RS41 radiosondes

Procurement Summary

Firm-fixed-price, single-award, Indefinite Delivery Indefinite Quantity (IDIQ) contract 1305M222DNWWG0002 was awarded on October 19, 2021 to Vaisala for their model number RS41 radiosonde, operating at 403 Mhz, that allows the National Weather Service (NWS), Office of Observations, to accomplish its mission of acquiring upper-air data that is essential for weather forecasts, research, and historical climatology. Contract 1305M222DNWWG0002 was awarded as a sole source follow-on requirement to continue to provide the model number RS41 radiosonde. Vaisala is the exclusive distributor and manufacturer of the model number RS41 radiosonde. Due to its proprietary nature, the model number RS41 radiosonde is the only radiosonde that will interface with the existing MW41 tracking system, previously competitively acquired under contract 1305M221CNWWG0004. Using an alternative radiosonde is not feasible due to technical interoperability of multiple existing systems nationwide, which would negatively impact accuracy of forecasts, specifically to critical weather watches and warnings.

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