This converter converts a signal in the 200 kHz to 3.8 MHz band into frequency signals that can be tuned on a 3.5 MHz receiver. Coil data not provided.
This high quality circuit with complementary symmetry was found in an Electronics World of 1966....
This circuit, found in ancient US documentation, allows you to switch the antenna from the...
This circuit was found in a 1991 publication. The transistor can be a general-purpose type....