Pico

I have built what is probably the easiest, reasonably rugged, and most cost-effective 100mW WSPR (or FT8) beacon. The Build Here is my quick and dirty build with whatever I had lying around: We replaced the traditional expensive Mini-Circuits transformer with a cost-effective Bourns coupled inductor. Analysis Power consumption: Before RF generation starts ➔ 20mA @ 5V. After RF generation starts ➔ 52mA @ 5V. So the input power consumed in the RF generation process is more than 150mW (which is good). ...