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.
What this circuit does is to agitate a servo at a frequency of 0.25 Hz, which can be used in...
This circuit is suitable for SSB modulation and was obtained from an amateur radio documentation from...
This telegraphy circuit generates an audio tone from a pure RF carrier. We found it in a...