Post subject: Cell Phone Jammer Circuit Design is
so simple Posted: Thu Sep 22, 2005 5:53 am
Joined: Wed Sep 21, 2005 3:40 am
I would like to explain the design of cell
phone jammer.Cell phone is actuelly a two way radio i:e we can send
and receive signals of different frequencies.The all you need to
VCO (Voltage Controlled Oscillator)
1650 – 2050
TL074 Quad Opamp
78L05 Voltage Regulator
9 Volt Power
Here you will generate the radio waves using VCO and apply
that output signal to operational amplifier to amplify that signal.A
voltage regulator is used which controls the operation of oscillator
circuit and 9v power supply is used to operate our final circuit.When
the waves are generated and amplified,you will need a small antenna
which transmits these waves in the range of 60-80 meters.When any
one enters in this range and he receives a call whose frequency
is inbetween 1650-2050 MHZ,our generated signal and origional signal
collide and cancle power of eachother. So no input is detected by
cellular. No service message is always there on that cellular.
NOTE:You can also block any FM radio but you need an oscillator
which generates waves in range of 88-108 MHZ.
Design It and
Post subject: Posted: Thu Sep 22, 2005 9:35
Joined: Mon Jul 18, 2005 4:31 pm
Location: Baltimore, MD
Anybody else think that
Naveed is now on the list?
subject: Posted: Thu Sep 22, 2005 11:49 am
But at what point
do we soak our hands in acid?
Post subject: Posted: Thu Sep 22, 2005 12:35 pm
Joined: Wed Aug 20, 2003 11:47 am
Santa Barbara, CA
Wow, I didn't know a TL074 opamp could be
used in the 1650-2050MHz band!! Thats one good opamp!!