This is a 1946 post-war model radio. The 3-tube receiver has a long-known tube configuration.
Depending on the components, given in the table, this circuit can amplify signals of 100 MHz or...
In this circuit, the relay remains closed by activating a lamp, for a time that depends on the...
This 6-transistor Japanese commercial radio was manufactured in the 1960s. The receiver is a super...