How to make a cell phone jammer?
Cell phone jammer creates strong interference for communication between the caller and receiver. It is efficient in blocking transmission of signals from networks including UMTS, 3G, CDMA, GSM and PHS.
Before making the device, you should know the cell phone jammer attribut. Then make it according to the frequency you need.
For any jammer circuit, it’s essential to have three important sub circuits:
RF amplifier, Voltage Controlled Oscillator and Tuning circuit
You can also use this mobile signal jammer to block any cell-based tracking systems which use your GPS to track and record your car’s moves. And it is quite possible to jam IEDs which detonated using cell phones.