H - Electricity – 03 – D
Patent
H - Electricity
03
D
325/79
H03D 7/16 (2006.01) H04B 1/28 (2006.01) H03B 5/12 (2006.01) H03D 7/12 (2006.01) H03D 7/14 (2006.01)
Patent
CA 1067153
ABSTRACT OF THE DISCLOSURE In a radio receiver having first and second mixers and in which, during short wave reception, an intermediate frequency signal is produced through the first and second mixers and, during medium wave reception, an intermediate frequency signal is produced through only the second mixer; the second mixer is formed of a pair of transistors having collectors connected to each other and emitters also connected to each other. By changing over switches, the base of one of the transistors is supplied with a received signal during short wave reception, and the base of the other transistor is supplied with a received signal during medium wave reception. As a result, suitable intermediate frequency signals can be selectively obtained at the collectors of the transistors.
262934
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