How to Produce a Cell Phone Jammer by Hands?

How to Produce a Cell Phone Jammer by Hands?

You should make the Cell Phone Jammer step by step.

The cell phone jammer operates at frequency since most mobile phones use it to operate. So the selected VCO is a sweeping oscillator, which is very effective but may be hard to construct for the beginners without nice RF-testing equipment.

As a noise source you can use 45MHz clock oscillator which is driving Local Oscillator port located on a mini-circuit mixer. There is also an impedance matching network for Local Oscillator signal to pass through it. It is used to equate impedances of the clock oscillator and the port of the mixer.

RF input (which is this port of the mixer) connected to the first 800MHz cell phone antenna, and the RF output is sent to the mini-circuit amplifier. This amplifier increases the output power for 15-16dbm. The amplified signal then sent to the second cell phone antenna.

2How It Works? All cell phones which use GSM800 have their transmitted and received frequencies always separated by 45MHz. So when the mobile phone tries to call it is blocked by its own signal returning to it! Isn’t that cool? When the phone blabber annoys you – turn your jammer on and that wrongdoer will hear own voice in his or her cell phone.

Oh, by the way, 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 (though I didn’t actually tested it) to jam IEDs which detonated using cell phones.3Pics And Notes.

  Circuit Board

The mixer I used is designed to work up to 600MHz but in this case it works pretty well.

  Circuit Board from top

RF amplifier is doing its job perfectly yet (as it was mentioned in the Jammer Store blog post) draws additional power.

  Case and Connectors

Old aluminium box was used as a frame for the jammer and old UHF connectors from Motorola cell phone as input/output.

  Attached UHF Connectors

You need to attach RF connectors to the circuit.

  Cell Phone Jammer Inside

Nine volt battery and voltage regulator were used to supply all components. The battery was placed inside and separated by the foamed plastic from the other components.

  Finishing Strokes

The power on/off switch is placed on the top. The input and output antennas (also from old Motorola mobile phone) are screwed onto UHF connectors.

Ready to Rock'n'Roll!

Your cell phone jammer is ready. Enjoy!

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Cell Phone Jammer – Your Tryst with Silence

Posted on June 8, 2012 by mobilejammerexpert

Silence is precious but underrated. Cell phones continuously ring and break your chain of thoughts. At times you feel like screaming out loud. Maybe you have even thrown away your phone out of sheer rage, at times. Put an end to noise and give silence the respect it deserves. Use a Cell phone jammer.

Purchasing a cell jammer is real easy. You will find hundreds of cell phone jammers for sale. Simply visit an online store and order one for yourself.

However, before that you got to know two things:–

a) What is a Cell Phone Interrupter?

b) The benefits of an interrupter.

A cell phone jammer is an instrument for blocking/preventing mobiles from receiving any signal from the base station. It basically disables your cell phone when put to use. You can use the disruptor anywhere you wish. It comes in real handy at places where silence is expected.

Imagine a classroom where you are teaching and all students are glued to their mobile phones. What do you do? You simply jam their mobiles using a cell phone jammer! They can’t send texts, they can’t cheat. What they can do is switch off their phones and pay attention to you. Period!

Similarly, prisons and detention centers that require high level security can benefit immensely from these Cell Phone Jammers. It puts a stop to those illicit communications carried out by prison mates and visitors.

A cell blocker is also helpful in movie theaters, libraries, and conference halls. One has to maintain silence in all these places.

Thus, using a cell jammer increases security, prevents frauds and cheats, and maintains the silence that is expected from everybody. Remember, a cell phone disruptor is not a product to cause harm. In fact, even when the disrupter is in full effect, the emergency services frequencies are not interrupted.

Thus, if you want to provide yourself and your patrons the peace and security they so much deserve, you can purchase a cell phone disrupter. However, while buying online, you must be aware of the trustworthy sites. Always buy high quality products for a flawless service. Nowadays, even 3G jammers are available.

Although critics have called the jammer a ‘phone killer’, in reality, it is most useful in areas of prison security, examination halls, movie theaters, government institutions, and high security places. Moreover, the 3G jammer provides the user the option of choosing which signal to block. It won’t interfere with the emergency signals that are sent by operators. The radius of the jammer’s operation is 50 meters. Beyond this limit, there is no signal interference. With every technology there is always an anti-technology. That’s nothing new. Mobile 3G jammers at least save you from the nuisance that mobile phones are capable of creating. Yes, of course, rules are important here to prevent misuse.