We found this circuit in an old English documentation. Transistors support modern equivalents. The circuit converts signals in the 5 to 15 MHz band for tuning into a common medium wave radio.
Found in a magazine 73 for radio amateurs, this circuit has two settings, one for the interval and the...
This circuit consists of a single Hartley oscillator using a bipolar transistor that can generate...
This simple timer, which activates an LED indicator, but which can be modified to activate a...