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.
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