Survey of a complete sample of southern extragalactic radio sources

We have observed a complete sample of bright Southern (with the declination 0° to - 25°) BL Lacertae objects and quasars at 2.3, 4.8, 8.4, 22, 43, 90, and 230 GHz. By using statistical methods we have compared the properties of the different classes of quasars to see if there are significant differences in the radio spectrum and variability of these sources