For reception of LW, MW and SW radio stations it works well. For DX and HAM listening it is average, although under favourable conditions it is possible. Very sensitive fine-tuning adjustment, literally by fractions of a millimetre.
@@sidneycavalcant I don't know. There are different opinions and videos on YT. Já mám from aliexpress, it has a blue LED in the power module. I recommend to reduce the loops to 60cm in diameter.