This oscillator with emitter follower was found in an American documentation from the 80's. The circuit generates 100 MHz signals and the transistors admit modern equivalents.
This sophisticated audio generator based on the XR2206 IC was featured in the May 1980 issue of...
This circuit measures the modulation of a 11-meter transmitter, having been found in a 1989...
We have other similar setups on this site. This one is from September 1976 Radio Electronics. The...