This 1 to 40 MHz amplifier is from a 1969 Motorola documentation. The components are of the time but admit modern equivalents.
This circuit was obtained from Radio Electronics magazine in May 1958. The circuit uses...
This circuit was obtained from the 1995 Encyclopedia of Electronic Circuits Volume 5. The circuit...
This tunnel diode oscillator was found in July 1986, Radio Electronics magazine. Note the low...