This RF preamplifier for the 450 MHz band was found in an amateur radio documentation from the 1980s. The transistor supports an equivalent operating at the recommended frequency.
This flasher with two power transistors was found in a Radio Electronics magazine from September 1961....
The configuration already explored in our Circuit Bench section is from the National...
We found this circuit in a Popular Electronics from the 90's. The circuit activates an oscillator...