Wind profiles measured with 430MHz radar during 1979 and 1980 have been used to calculate frequency and radial wavenumber power spectra. Periods between 2 min and 6 h and vertical wavelengths between 300m and 13.5km are covered by the spectra. The data are line-of-sight velocity components obtained with a beam pointing between 5.4o and 15o off-vertical. The presented evidence supports the conclusion that the dominant contribution to the spectra at periods less than 1h is from the vertical velocity component. -from Authors