VLBI monitoring of a sample of 15 AGN at 22 GHz - I. Data

We have observed a sample of 15 bright active galactic nuclei (AGN) three t imes during 1992-1996 using the global 22 GHz VLBI network. The sample cons ists of all sources in the complete 2 Jy catalog of Valtaoja et al. that we re not observed at 22 GHz VLBI before the first epoch. We will present subm illiarcsecond resolution VLBI images of these sources with description of t he observations and data analysis techniques. Part II of this paper will co ntain a detailed analysis of the images.