MULTIFREQUENCY RADIO OBSERVATIONS OF THE GRAVITATIONAL LENS SYSTEM 1938+666

We present the results of multifrequency VLA, MERLIN and VLBI radio ob servations of the radio source 1938 + 666, and show that its propertie s are consistent with gravitational lensing. By matching radio spectra and polarization properties, we identify which components are likely to be gravitational images of the same part of the source. Using a sim ple lens model, we show that the image configuration is consistent wit h lensing by a galaxy, represented by a potential with a small ellipti city.