Hand-held jammers are very popular, they have several antenna designs, such as three and four. I need to buy such a signal blocking device, which is better? Can you recommend it to me?
The jammer equipment is sold online with a variety of antenna designs, of which 3 and 4 of the antennas are very popular. It is very good to buy such equipment. Here you can see the 4 most popular antenna portable jammer in 2020 .