We found this circuit in the November 1995 Electronics Now magazine. The circuit is more accurate than the previous one using an external multimeter as an indicator.
In the figure we show how to use a common transformer by changing its secondary to obtain a...
The frequency ranges that this receiver can tune in depend only on the coils. For medium waves L1...
This transmitter has a power of only 2 W, but with a good antenna it can send its signals over...