This circuit uses unusual Motorola components. The circuit was suggested in the 1990 Linear Databook. Transistors can be replaced with equivalents.
This oscillator with the 4049 can generate signals up to about 14 MHz according to the article in the...
This simple receiver, which requires a good antenna and grounding, was found in an Argentine...
This setting is valid for other transconductance operational amplifiers. The circuit is from...