... TWO-DIMENSIONAL MAPPING OF THE SUN WITH THE RATAN-600 . ... Both active regions which were present on the solar disk were mapped. ... The study of the microwave emission of solar active regions needs high spatial resolution observations together with a wide frequency coverage. ... Above 8.2 cm, the two active regions present during the observations were not resolved, while at wavelengths from 0.8 cm to 2.3 cm the active region emission was nearly at the same level as the quiet-Sun emission. ...