Abstract
Results from an investigation of drift and anisotropy of E-region irregularities at Waltair during the IQSY period, using the D1 method, are presented. The drift data are treated by the correlation function method and the experimental results were studied to infer trends of diurnal and seasonal variation of drift and anisotropy parameters, effect of magnetic activity and the inter-relationships between the parameters. The observed features are compared with those at the other stations during IQSY period.