  The classical model for free-free emission from ionized stellar winds is
based on the assumption of a stationary, isotropic and homogeneous wind.
However, since there exist objects whose wind behaviour deviates from the
standard model, during the last decade these assumptions have been questioned.
In this work, we present results for 3 bright sources: P Cyg, Cyg OB2 No.12 and
WR 147. These objects have been reported to possess winds that deviate from the
basic assumptions. We have obtained flux densities, sizes, spectral indices and
mass loss rates for each of the targets. These parameters allow us to analyze
possible asymmetries, inhomogeneities and time variations in the flux
densities. These features confirm the nonclassical behaviour of these winds.
