Found in a European magazine from the 1980s, this circuit can amplify signals from 10 kHz up to over 220 MHz with good gain. MOSFET supports equivalents.
Although the BD135 transistor is not specifically for RF applications, some of them can easily...
This transmitter for modulated radiation can be used as an optical data shield. The maximum...
This ultra-low noise circuit was found in the May 1990 issue of Radio Electronics magazine. The...