This circuit was found on an 80's Ham Radio. The transistor admits equivalent. The circuit can generate 20 to 100 MHz signals operating at the fifth harmonic of the crystal.
Found in a Philips documentation from 1967, this circuit is intended for applications with...
Found in a 1980s publication, this circuit uses an operational amplifier from that time. The...
This JFET amplifier was found in documentation from 1958. The circuit has voltage gain of 4 and 10...