[en] SODAR B has been routinely operated on the meteorological meadow of the KfK, which is located close to the 200 m high meteorological tower and is surrounded by forest. The SODAR B comprises three antennas mounted on a common carriage. The antennas transmit alternatingly in a 3 s sequence an acoustic pulse of 1585 Hz and 1615 Hz (mixed) upwards into the atmosphere. During the test period the SODAR B has proven a high availability. Only the foam cover inside the antennas had to be replaced by a weather resistent one. The following data have been measured and recorded, a. o.: the 10 min averages of the wind direction and velocity and the standard deviation of the vertical wind velocity, each from 60 m up to 420 m height in steps of 20 m. These data have been compared with the data measured at the meteorological tower at whichever heights the relevant instruments are mounted at the tower. At heights of 60 m and more the correlation coefficient of the wind direction amounts to more than 0.92, the one of the wind velocity at heights of 80 m and more to more than 0.80 and the one of the standard deviation at 100 m and during certain time periods to more than 0.7. (orig./HP)