receiver supereterodina frequency between 25 and 45 mhz mhz

摘要

the invention relates to a receiver of the type supereterodina, with preferential use, but not only in the field of apricancelli.in the field of domestic applications relating to the safety and security and in the field of radio controls, in general, for frequencies ranging from 25mhz and 45 mhz.the main limitations of known solutions are the need to carry out between in the production process, and the consequent danger of starature in time, the excessive size.the power absorbed greater than 10 ma and difficult adaptability to user circuits because the voltage of the last stage is the same as that of the stages.teeth: found exceeds the performance of receivers of the type known thanks to an improved design.