Both, the RASS RAE1 and the windRASS extensions for our successful FAS Series Sodars are now available with an operation frequency of 915 MHz to meet the requirements of our North American users. The extended sweep inversion technique leads to improved accuracy and range of the RASS derived temperature and wind profiles. The windRASS extensions provides wind speed and direction profiles even under the condition of weak atmospheric turbulence and precipitation. For more details, see the RASS RAE1 and windRASS product pages.