This 1960s Japanese 5-transistor radio is powered by 9 V and has good sensitivity for the medium wave range. The configuration is of the superheterodyne type with FI of 455 kHz.
Using the LM3909 this circuit was found in the January 1992 issue of Radio Electronics magazine....
This circuit was obtained in an old European documentation. The integrated circuit used is...
The circuit shown in the figure differs from the previous one (CIR8909) in that it can be...