USER'S INSTRUCTIONS: The project work you are about to view is on "design and construction of a multi frequency radio jammer". Please, sit back and study the below research material carefully. This project topic "design and construction of a multi frequency radio jammer" have complete 5(five) Chapters. The complete Project Material/writeup include: Abstract + Introduction + etc + Literature Review + methodology + etc + Conclusion + Recommendation + References/Bibliography.Our aim of providing this "design and construction of a multi frequency radio jammer" project research material is to reduce the stress of moving from one school library to another all in the name of searching for "design and construction of a multi frequency radio jammer" research materials. We are not encouraging any form of plagiarism. This service is legal because, all institutions permit their students to read previous projects, books, articles or papers while developing their own works.

---

TITLE PAGE

DESIGN AND CONSTRUCTION OF A MULTI FREQUENCY RADIO JAMMER

BY

---
EE/H2013/01430
DEPARTMENT OF ----
SCHOOL OF ---
INSTITUTE OF ---

DECEMBER,2018

---

APPROVAL PAGE

This is to certify that the research work, "design and construction of a multi frequency radio jammer" by ---, Reg. No. EE/H2007/01430 submitted in partial fulfillment of the requirement award of a Higher National Diploma on --- has been approved.

By
---                                                     . ---
Supervisor                                                  Head of Department.
Signature……………….                           Signature……………….        

……………………………….
---
External Invigilator

---

DEDICATION
This project is dedicated to Almighty God for his protection, kindness, strength over my life throughout the period and also to my --- for his financial support and moral care towards me.Also to my mentor --- for her academic advice she often gives to me. May Almighty God shield them from the peril of this world and bless their entire endeavour Amen.

---

ACKNOWLEDGEMENT

The successful completion of this project work could not have been a reality without the encouragement of my --- and other people. My immensely appreciation goes to my humble and able supervisor mr. --- for his kindness in supervising this project.
My warmest gratitude goes to my parents for their moral, spiritual and financial support throughout my study in this institution.
My appreciation goes to some of my lecturers among whom are Mr. ---, and Dr. ---. I also recognize the support of some of the staff of --- among whom are: The General Manager, Deputy General manager, the internal Auditor Mr. --- and the ---. Finally, my appreciation goes to my elder sister ---, my lovely friends mercy ---, ---, --- and many others who were quite helpful.

---

PROJECT DESCRIPTION: This work "design and construction of a multi frequency radio jammer" research material is a complete and well researched project material strictly for academic purposes, which has been approved by different Lecturers from different higher institutions. We made Preliminary pages, Abstract and Chapter one of "design and construction of a multi frequency radio jammer" visible for everyone, then the complete material on "design and construction of a multi frequency radio jammer" is to be ordered for. Happy viewing!!!

---

Cell phones and radio receivers are used everywhere these days. It's great to be able to call anyone anytime. But unfortunately, restaurants, movie theatres, concerts, shopping malls and churches all suffer from the spread of cell phones because not all cell-phone users know when to stop talking. While most of us just grumble and move on, some people are actually going to extremes to retaliate. FM Jammer can be one of the solutions to this problem. A transmitter is a  device  from  which  signal  is transmitted  into  free  space,  after  insertion  of  suitable  carrier,  i.e. is superimposed on a high frequency-sine wave. In Frequency Modulation, frequency of carrier is varied according to the modulating signal. The capture effect, or FM capture effect, is a phenomenon associated with FM reception in which only the stronger of two signals. Major application of Jammer includes in controlling a hostage situation in which police can control when and where a captor can make a phone call. Police can block phone calls during a drug raid so suspects can't communicate outside the area. Cell-phone jammers can be used in areas where radio transmissions are dangerous, (areas with a potentially explosive atmosphere), such as chemical storage facilities or grain elevators. Moreover it can be used in places like Hospitals, restaurants, movie theatres, concerts, shopping malls and churches where silence is required

TABLE OF CONTENTS
COVER PAGE
TITLE PAGE
APPROVAL PAGE
DEDICATION
ACKNOWELDGEMENT                     
ABSTRACT

CHAPTER ONE
1.0      INTRODUCTION
1.1      BACKGROUND OF THE PROJECT

• PROBLEM STATEMENT
• OBJECTIVE OF THE PROJECT
• LIMITATION OF THE PROJECT
• PROBLEM AND CHALLENGES
• APPLICATION OF THE PROJECT
• METHODOLOGY
• PROJECT ORGANISATION

CHAPTER TWO
LITERATURE REVIEW

• INTRODUCTION
• OVERVIEW OF RADIO JAMMING
• TYPES OF SIGNAL JAMMERS
• HISTORY OF RF/ GSM JAMMER
• OPERATION OF THE PROJECT
• REVIEW OF THE PREVIOUS WORK
• PRESENT WORK
• HOW A GSM JAMMER WORKS
• HOW GSM JAMMERS ARE MADE
• GSM JAMMER RANGE
• RADIO FREQUENCY JAMMER USES
• RADIO FREQUENCY JAMMER EVOLUTION
• HISTORICAL BACKGROUND OF A GSM JAMMER

CHAPTER THREE
SYSTEM DESIGN

• SYSTEM BLOCK DIAGRAM
• MOBILE JAMMER CIRCUIT DIAGRAM
• CIRCUITS OPERATION
• DESCRIPTION OF COMPONENTS USED

CHAPTER FOUR

4.0     RESULT ANALYSIS
4.1      CONSTRUCTION PROCEDURE AND TESTING ANALYSIS
4.2     CASING AND PACKAGING
4.3        ASSEMBLING OF SECTIONS
4.4    TESTING OF SYSTEM OPERATION
4.5     INSTALLATION OF THE COMPLETED DESIGN

CHAPTER FIVE

5.1      CONCLUSIONS

• RECOMMENDATION
• REFERENCES

CHAPTER ONE

1.1                                                      INTRODUCTION

It is not practicable to send electronic signals over wire to distant places. They are sent by radio. Low frequency signals, as in the audio range, cannot be frequency signals, as in the audio range, cannot be transmitted efficiently, so they are converted to higher frequency called radio frequencies, which can be transmitted effectively over long distance. The electronic equipment used to produce radio frequency (RF) signals for radio transmission is called a transmitter. The function of the transmitter is to generate RF carrier of proper frequency and sufficient power. The output of a transmitter is applied to an antenna, which radiates the signal into space. A basic transmitter consists of an oscillator and an RF amplifier. The oscillator generates a continuous sinusoidal output that serves as the carrier frequency. The carrier is amplified to the required power level by the RF amplifier as shown in figure. An antenna connected to the output of RF amplifier radiates the signal into space.

1.2                                         BACKGROUND OF THE PROJECT
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. When the signal has been blocked, the mobile phone will show “NO NETWORK” on the network bar, and radio devices will not be able to tune 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 manufacture, importation, sale, or offer for sale, of devices designed to block or jam wireless transmission is prohibited”.
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.
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.

1.3                                                  PROBLEM STATEMENT
Due to the increasing sophistication and high technology, most people are using mobile phones, and also due to the need for man to stay updated with his environment, the use of radio is also in wide use.
Mobile phones have become a very important communication tool today. With the use of the mobile phones everywhere, it becomes annoying device while working, studying, praying and many more.
Modern technology has contributed to the sophistication of bombs which are being triggered by GSM and Radio signals.
Wireless mobile jammer can be placed in schools, mosque, and conference hall, meeting rooms, library and many more places which need quiet and peaceful environment. This device will block the transmission of Radio and GSM signals.

1.4                                            OBJECTIVES OF THE PROJECT
The Development of Wireless Signal Jammer for Security Application objective is:

• To design Radio Frequency (RF), Intermediate Frequency (IF), and Power Supply circuit. To construct the Development of Wireless Signal Jammer for Security Application’s circuit.
• To construct the development of wireless signal jammer for security application’s circuit.
• To simulate Intermediate Frequency (IF) section circuit.
• To block mobile phones transmission by creating interference.
• To block multiple frequency of amplitude modulated and frequency modulated signal transmission by creating interference within its range.

1.4                                         SIGNIFICANCE OF THE PROJECT
Even thought using of cell phone is every important for our daily life but these cell phone devices are creating some problems as the sound of ringing becomes annoying or disrupting in our environment. So the device jammer is the solution to avoid the annoying or disrupting of the cell phone devices.

1.5                                           LIMITATION OF THE PROJECT
This project only focuses on blocking the signal transmission which is the range between 835 to 960 MHz.
The third limitation is that for reliability of the jammer, a Radio Frequency amplifier should be incorporated but the components required for this are difficult to find in Nigeria.

1.7                                        PROBLEM AND CHALLENGES

Many of the components were tiny and could not be soldered without significant risk of damage to component. This was overcome by using conductive pens to create contacts on these components Oscillator signals appeared modulated .HF signals leaked through breadboard and interfered with one another. Corrected by placing MUX on RF board

1.8                                         APPLICATIONS OF PROJECT

Such device can be used to jam detonation of remote controlled explosive devices. In case of earthquakes, floods or other such circumstances, we can jam the desired frequency band and deliver the message needed to be delivered. It can be used in military installations like in military headquarters, checkpoints, base camps etc.

1.9                                         METHODOLOGY
To achieve the aim and objectives of this work, the following are the steps involved:

• Study of the previous work on the project so as to improve it efficiency.
• Draw a block diagram.
• Test for continuity of components and devices,
• Design and calculation for the jammer was carried out.
• Studying of various component used in circuit.
• Construct a jammer circuit.
• Finally, the whole device was cased and final test was carried out.

1.10                        PROJECT WORK ORGANISATION
The various stages involved in the development of this project have been properly put into five chapters to enhance comprehensive and concise reading. In this project thesis, the project is organized sequentially as follows:
Chapter one of this work is on the introduction to a Rf GSM jammer. In this chapter, the background, significance, objective limitation and problem of a Rf GSM jammer were discussed.
Chapter two is on literature review of a Rf GSM jammer. In this chapter, all the literature pertaining to this work was reviewed.
Chapter three is on design methodology. In this chapter all the method involved during the design and construction were discussed.
Chapter four is on testing analysis. All testing that result accurate functionality was analyzed.
Chapter five is on conclusion, recommendation and references.

---

CHAPTER TWO: The chapter one of this work has been displayed above. The complete chapter two of "design and construction of a multi frequency radio jammer" is also available. Order full work to download. Chapter two of "design and construction of a multi frequency radio jammer" consists of the literature review. In this chapter all the related work on "design and construction of a multi frequency radio jammer" was reviewed.

CHAPTER THREE: The complete chapter three of "design and construction of a multi frequency radio jammer" is available. Order full work to download. Chapter three of "design and construction of a multi frequency radio jammer" consists of the methodology. In this chapter all the method used in carrying out this work was discussed.

CHAPTER FOUR: The complete chapter four of "design and construction of a multi frequency radio jammer" is available. Order full work to download. Chapter four of "design and construction of a multi frequency radio jammer" consists of all the test conducted during the work and the result gotten after the whole work

CHAPTER FIVE: The complete chapter five of design and construction of a "design and construction of a multi frequency radio jammer" is available. Order full work to download. Chapter five of "design and construction of a multi frequency radio jammer" consist of conclusion, recommendation and references.

 

---

To "DOWNLOAD" the complete material on this particular topic above click "HERE"

Do you want our Bank Accounts? please click HERE

To view other related topics click HERE

To "SUMMIT" new topic(s), develop a new topic OR you did not see your topic on our site but want to confirm the availiability of your topic click HERE

Do you want us to research your new topic? if yes, click "HERE"

Do you have any question concerning our post/services? click HERE for answers to your questions

---

For more information contact us through any of the following means:

Mobile No :+2348146561114 or +2347015391124 [Mr. Innocent]

Email address :engr4project@gmail.com

Watsapp No :+2348146561114

---

COUNTRIES THAT FOUND OUR SERVICES USEFUL

Australia, Botswana, Canada, Europe, Ghana, Ireland, India, Kenya, Liberia, Malaysia, Namibia, New Zealand, Nigeria, Pakistan, Philippines, Singapore, Sierra Leone, South Africa, Uganda, United States, United Kindom, Zambia, Zimbabwe, etc
Support: +234 8146561114 or +2347015391124

Watsapp No :+2348146561114

Email Address :engr4project@gmail.com

---

FOLLOW / VISIT US VIA: