-
Construction Of Radio Frequency Gsm Signal Jammer
CHAPTER ONE -- [Total Page(s) 2]
Page 2 of 2
-
-
-
1.2 Project Background
The technology being used by this
device is very simple. The mobile phone transmission is being blocked
and interfered by RF which creates high noise. The frequency being
generated by the jamming device jams the signal being generated by the
cell tower (as illustrated in figure 1.1 below).
When the signal has
been blocked, th NETWORK†on the network bar, and radi into any signal.
Thus, all phones and radio devices in the 200m radius of the jammer will
be having the same situation.
Radio Frequency (RF) and Mobile signal
jammer is an illegal device in many countries. It is because the device
is blocking the signal which has been approved by government agency as a
legal communication transmission system. According to the National
Communications
Commission (NCC) in Nigeria, “The man for sale, of devices designed to block or jam wireless transmission is prohibitedâ€]. [10
The
reason I am developing this device is for educational purpose only.
This device was developed and tested in this report just for Final Year
Project presentation. There is no intention of manufacturing or selling
such device in Nigeria or elsewhere.
3
In the construction of this
wireless signal jammer, the device will be able to jam GSM and Radio
Frequency (RF) signals and this can be done alternatively through a
switch.
As shown in Fig. 1.1 below, the wireless signal jammer is
divided into two major branches: the GSM signal jammer, and the radio
receiver jammer. The radio receiver jammer is also sub-divided into the
Amplitude Modulated (AM) signal jammer and the Frequency Modulated (FM)
Signal jammer. The Cell phones and Radio receivers cannot be blocked
simultaneously as they operate at separate frequencies. The frequency
can then be varied using a frequency tuner mounted on the jammer
JAMMER
GSM SIGNAL JAMMER
RADIO FREQUENCY RECEIVER
(935-960MHz)
SIGNAL JAMMER (87.5-108 MHz)
AMPLITUDE MODULATED SIGNAL
FREQUENCY MODULATED SIGNAL
Fig. 1.1 Block Diagram of Signal Jammer
The block diagram in Fig. 1.2 below gives a pictorial representation of the working principle of a wireless signal jammer.
CHAPTER ONE -- [Total Page(s) 2]
Page 2 of 2
-
