The properties of black body SHF models which are artificial sources of radio noise radiation and methods for antenna parameters measuring with the help of «hot» radiators (at radiation temperatures of 1000…100000 K) are given. In the radiators it is possible to control dimensions of the radiating aperture, polarization and temperature of radiation. The hot radiators are certified by means of the national standard black body thermal model with the error not more than 2-4%.