This jammer can only block GSM(2G)...
Jamming radius: 10-30M, Note: the jamming radius is just for reference. If your operation location is too close to the base station, the jamming radius will go down!Coverage area: 100-300 ㎡
Can block a frequency range as low as 70MHz!
Stands out from other 14 antennas jammers sold by other sellers;
It's even better than most 16 antennas jammers sold in the market!