1.What kind of jammer you want ? In this section, we offer two kind of jammer, one is Portable Jammer, one is Desktop Jammer.
2.What signals or devices you want to block? Now we give most signals here. Cell Phone Signal: GSM CDMA DCS PCS 3G 4G lte Wimax; GPS Signals: GPS L1 L2 L3 L4 L5; WIfi Signals: 2.4G 5.8G 1G 1.2G 4.9G 5G; RF Signals: 315Mhz,433Mhz,310Mhz,390Mhz,418Mhz,868Mhz; Walkie Talkie Signal: VHF UHF; Glonass L1 L2; Lojack; XM Radio
3.Portable Jammer has the Max. 8 Antennas. Each antenna contains 1 to 2 frequencies. So you can’t choose all signals to install in one portable jammer. Desktop Jammer has the Max 14 Antennas, you may put as many signal as you can in one desktop jammer.