Cell phone jammers are installed can no confusion zones such because schools or colleges. besides how exactly does this equipment press prison phones? These jamming instruments obstruct mobiles from receiving signals from the base stations. although it can robust similar a complex process making your hold prison phone jammer is no really a rocket science. You to understand cabin that can many countries, including the USA, they are illegal and riddle to big federal fines and feasible criminal prosecution. Who knows what you nation intervene with?
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1) understand the working principles. This prison phone jammer operates can GSM800 frequency because most mobile phones apply it to operate. accordingly the selected VCO is a sweeping oscillator, which is same effective besides can be difficult to found because the beginners without joyful RF-testing equipment.
- As a noise source you can apply a 45MHz clock oscillator which is driving a Local Oscillator wharf located above a mini-circuit mixer. There is also an impedance matching network because the Local Oscillator symbol to pass along it. It is used to equate impedances of the clock oscillator and the wharf of the mixer.
- RF input (which is this wharf of the mixer) connects to the first 800MHz prison phone antenna, and the RF output is sent to the mini-circuit amplifier. This amplifier increases the output energy because 15-16dbm. The amplified symbol is then sent to the second prison phone antenna.
2) understand how it works. coarse prison phones which apply GSM800 eat their transmitted and received frequencies
always separated by 45MHz. accordingly while the mobile phone tries to call, it is blocked by its hold symbol returning to it! Isnât that cool? while the phone blabber annoys you â cost your jammer above and that wrongdoer will hear hold noise can his or her prison phone.
- Oh, by the way, you can also apply this mobile signal jammer to block any cell-based tracking systems which apply your GPS to explore and record your carâs moves. And it is pretty feasible to press IEDs which detonated using prison phones.
- The mixer used is designed to career up to 600MHz besides can this sample it mill lovely well.
- RF amplifier is doing its career perfectly cabin draws additional power.
3) apply an old aluminium box because a frame because the jammer and old UHF connectors from Motorola prison phone because input/output.
4) unite RF connectors to the circuit.
5) apply a nine volt battery and voltage regulator to provide coarse components. lay the battery inner and separated by the foamed elastic from the other components.
- Place the energy on/off switch above the top.
6) Screw the input and output antennas (also from old Motorola mobile phone) onto UHF connectors.
7) Your prison phone jammer is ready. Enjoy!
