The circuit presented is a Japanese commercial radio from the 1960s. With a 4.5 V supply, it is a super-heterodyne type with an IF of 455 kHz. 6 germanium transistors are used.
We found this circuit in a 70s Electronic Design documentation. The circuit uses general-purpose...
Texas Instruments ESD122 Electrostatic Discharge Diodes (ESD) can be ordered from Mouser...
This circuit is suggested by Motorola as the basis for the MC3324 A integrated circuit and has a...