Buy cell phone jammers | video cellphone jammers skating rink
You are very attentive! :) Indeed, mobile phone signal jammers have different quantity of their signal antennas to help them output their jamming signals. One and two antennas is the rare case these days since most mobile phone jammers (and other radio signal jammers as well) have three or more antennas.
The more antennas has the jammer - the more frequency bands it can block simultaneously. For example, this desktop jammer has five antennas which allows it to successfully deal with wide range of radio signals and wireless frequencies. By the way, the power of every signal band of this jammer may be adjusted by you.
As you can see, the more antennas you’ve got, the more signals you can jam!