This circuit with the PA7601 was found in a 1967 Philco-Ford documentation. The circuit has a pass band from 45 to 120 MHz.
This traditional configuration of a white noise generator that uses the junction of a transistor with a...
Found in a 1967 EEE, this circuit generates a constant amplitude signal, stabilized by a zener...
This circuit can be adapted to an FM radio or other receiver that does not have a tuning indicator LED....