Observations of the troposphere with a VHF radar using a large antenna for transmission and small spaced antennas for reception show that atmospheric velocities measured by the drifts method agree well with balloon winds. Many of the echoes from the middle troposphere appear to come from horizontally stratified layers. Studies of the irregularity structure by measurement of the spatial coherence of these echoes and of their angular spectra by interferometric techniques show that many echoes are caused essentially by specular reflection.