This commercial transistor radio was manufactured by RCA in the 1960s. The circuit has only 4 transistors and is powered by a voltage of 9 V with an audio power of 20mW.
This circuit is based on an uncommon Texas component today, as found in an American 1980s...
Despite being from a 1970 General Electric documentation this circuit can be used as a shield if...
This receiver was found in a 1968 publication, but can be mounted with a BC548 and BC558 in place...