As others have mentioned, from whom I took the example and bought it, the pleasant surprise was great! EXCELLENT reception, on the first floor of an apartment building in Patissia, in an apartment surrounded ONLY by apartment buildings!!! It captures better than the other expensive one I have in another room and that I paid at least 60 euros for! I will soon buy two more for the country house! It seems delicate though and doesn't require much (I think it breaks easily if someone mishandles its components)... but this is not common for an antenna whose purpose is the reception and not durability tests! Excellent purchase. Worst case scenario, if it doesn't work well for someone (which I doubt), the loss of money is negligible! One note: The loops that are provided to mount it on a pole are small in size. If your pole has a diameter of 4 centimeters, it will not be able to be mounted. A thinner pipe is needed. I had to come up with a solution to install it.

Very good reception at a distance of 18 km from the transmitters.
Good build quality, especially for the price below 10 euros!
The only negative is that it can only be placed on a thin pole, unless a patent is made.
Update: WARNING! If there is a strong 4G signal in the area, there may be a problem with reception on channels 36-38 and possibly others.
Unfortunately, it does not have a built-in frequency rejection filter for 4G and 5G on the board.