Двухдиапазонный охлаждаемый облучатель радиотелескопа . ... Dual-band Cooled Feed for a Radio Telescope . ... Design of the S/X band feed with circular polarization is considered. The design is allowing of increasing number of frequency channels, according to requirements of a method of a broadband delay. ... For decrease of noise temperature of the device, the feed is placed in a dewar with a radio transparent window, where it is cooled to temperatures of hydrogen level. ...