Define Signal blocker Jamming
The interference of all unwanted signals with the same frequency as the useful signal that falls within the passband of the receiver, also known as co-channel interference. These useless signals, like useful signals, are amplified in the receiver and converted to frequency to fall within the intermediate frequency passband. Therefore, as long as there is co-channel interference at the receiver input, the receiving system cannot filter and suppress it.
When two or more different frequency signals act on a nonlinear circuit, the signal jammer will modulate each other to generate a new frequency signal output. If the frequency falls within the receiver's working channel bandwidth, it will interfere with the receiver.
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The jammers are customized according to the frequency bands of different countries, please confirm that the purchase country and the actual use country are consistent. Otherwise it can not be used.Please read the jammer function before purchasin
World First 24 Antennas all-in-one design wireless signal Jammer with nylon cover for portable, jamming all types of Android phones, Tablets, Smart Phones, iPhones, Win phones etc. that use 2G, 3G, 4G 5G, and CDMA 450Mhz