As the name implies, the signal blocker blocks various signals. What are our common signals?
2G/3G/4G/5G, WiFi (2.4G/5.8G), GPS, Beidou, Bluetooth, walkie-talkie, etc...
To be more detailed:
China Mobile currently uses 3 modes of GSM(2G)/TD-SCDMA(3G)/TD-LTE(4G);
China Unicom uses GSM(2G)/WCDMA(3G)/TD-LTE(4G)/FDD-LTE(4G);
China Telecom uses CDMA1X(2G)/EVDO(3G)/TD-LTE(4G)/FDD-LTE(4G);
As can be seen from the above, the signal frequency bands used by each operator are different, so when purchasing a wifi jammer, we must also consider which operator's signal we want to block, or directly buy a model that blocks the entire network.
Classification of wifi blocker transmit power:
The size of the transmit power of the shield, generally 2 watts corresponds to a gain of 33db, and what is the DB value, the DB number represents the relative ratio of the signal strength of the input and output ports of the device (or system), such as:
+10db means that the output of the device amplifies the input signal by 10 times
-10Db means the output of the device attenuates the input signal by a factor of 10
Therefore, the higher the power, the more expensive the corresponding wifi signal jammer will be.
