Cell Phone Service Jammer

Electrical Electronics Engineering | Engineering

A cell phone service jammer refers to a device designed to disrupt cellular communication signals within a specific area, rendering mobile phones unable to make or receive calls, send text messages, or access the internet via cellular networks. These devices operate by emitting signals on the same frequencies used by cell phones, thereby interfering with the normal functioning of mobile devices within their range. Cell phone jammers are typically used in contexts where controlling or restricting wireless communication is deemed necessary, such as in sensitive government facilities, prisons, theaters, or during events where maintaining silence or preventing unauthorized communication is essential for security or privacy reasons. However, the use of cell phone jammers is illegal in many jurisdictions due to concerns about public safety, emergency communication disruptions, and violations of individuals’ rights to access communication services.

ABSTRACT

Cell phone service jammer is an instrument used to prevent cellular phones from receiving signals from base stations. When used, the jammer effectively disables cellular phones. These devices can be used in practically any location, but are found primarily in places where a phone call would be particularly disruptive because silence is expected.

Jamming is usually distinguished from interference that can occur due to device malfunctions or other accidental circumstances. Devices that simply cause interference are regulated under different regulations. Unintentional ‘jamming’ occurs when an operator transmits on a busy frequency without first checking whether it is in use, or without being able to hear stations using the frequency. This seminar writes on cell phone service jammer which is the main aim of the study.

TITLE PAGE

APPROVAL PAGE

DEDICATION

ACKNOWLEDGEMENT

ABSTRACT

TABLE OF CONTENT

CHAPTER ONE

INTRODUCTION
BACKGROUND OF THE STUDY
AIM/OBJECTIVE OF THE STUDY
SIGNIFICANCE OF THE STUDY
SCOPE /LIMITATION OF THE STUDY
AREA OF APPLICATIONS OF CELL PHONE SERVICE JAMMER

CHAPTER TWO

LITERATURE REVIEW

2.1      INTRODUCTION
2.2     HISTORY CELL PHONE JAMMER
2.3      PREVIOUS WORK
2.4      PRESENT WORK
2.5       HOW A GSM JAMMER WORKS
2.6     HOW GSM JAMMERS ARE MADE
2.7     GSM JAMMER RANGE

2.8 RADIO FREQUENCY JAMMER USES

CHAPTER THREE

3.1 DISTINCTION BETWEEN “JAMMING” AND “INTERFERENCE”

3.2 OPERATION OF CELLPHONE JAMMERS

3.3 APPLICATION OF GSM JAMMER IN LECTURE AUDITORIUM

3.4 IMPACT OF GSM JAMMER ON SERVICE DELIVERY

CHAPTER FOUR

CONCLUSIONS AND RECOMMENDATIONS
- CONCLUSIONS
- RECOMMENDATION
- REFERENCES

CHAPTER ONE

1.0 INTRODUCTION

1.1 BACKGROUND OF THE STUDY

Mobile phones have become essential tools for communication and information exchange in the last two decades. Many people rely on their mobile phones in their personal lives as well as their businesses. Most mobile phone users exchange very sensitive and private information using their mobile phones assuming that the mobile phone network is reliable and secure (Mohan, 2018).

In the present world every person is so engrossed in their mobile phones that they carry it themselves almost everywhere which also includes the restricted areas like examination halls, conference halls, meeting rooms, court rooms, petrol pumps and many more places. This hampers the privacy and security of that place. This can be prevented by installing jammers in these places, but when left active for long time it can be dangerous for the environment as it emits radiations (Mohan, 2018). To overcome this issue we can use a detector which activates the jammer.

GSM signal jammer is a device which blocks transmission by creating interference.

A GSM jammer is a device that transmits a signal on the same frequency at which the GSM operates. The jamming succeeds when the mobile phones in the area where the jammer is located are disabled.

In recent times, where bombs are being planted and detonated by GSM or Radio Frequency signals, this device can be at an advantage by jamming the signals required for the detonation of the bomb.

Presently, the mobile jammer devices are becoming civilian products rather than electronic warfare devices, since with the increasing number of the mobile phone users the need to disable mobile phones in specific places where the ringing or use of cell phone would be disruptive. These places include worship places, university lecture rooms, libraries, concert halls, meeting rooms, and other places where silence is appreciated.

The solution to these annoying and disrupting noises is to install a device which can block the signal transmission from mobile phones.

Jamming devices overpower the cell phone by transmitting a signal on the same frequency and at a high enough power that the two signals collide and cancel each other out. Cell phones are designed to add power if they experience low-level interference, so the jammer must recognize and match the power increase from the phone.

To jam a cell phone, all you need is a device that broadcasts on the correct frequencies (Mohan, 2018). Although different cellular systems process signals differently, all cell-phone networks use radio signals that can be interrupted. GSM, used in digital cellular and PCS-based systems, operates in the 900-MHz and 1800-MHz bands

1.2 PROBLEM STATEMENT

Due to the increasing sophistication and high technology, most people are using mobile phones. 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, and praying and many more.

Modern technology has contributed to the sophistication of bombs which are being triggered by GSM (Abdul et al., 2018). To bring this problem to an end, cell phone jammer was established to stop the usage of cell phone devices in public places where the use of cellphone is highly prohibited.

1.3 AIM AND OBJECTIVES OF THE STUDY

The main aim of this seminar are to carry out a research on the cell phone service jammer which involves the restriction of the use of handset in a certain public places. The objectives are:

To increase security
To prevent cheating

To maintain a quiet atmosphere for your patrons

1.4 SIGNIFICANCE OF THE STUDY

For school or university, by blocking cell phone signals, students cannot become distracted by their phones. In addition, they cannot cheat by sending text messages to one another during exams.

High security premises, such as prisons and detention centers, can also benefits from a jammer services because it can prevent illicit communication between inmates and visitors.

Of course, a cell phone jammer can also be beneficial in places such as a movie theater or a library where other patrons expect silence so they can enjoy their activities. Therefore, having a signal jammer can maintain some level of silence.

The reality is that signal jammers are not intended to harm. In fact, even when blocking cell phone signals, emergency services frequencies are not disturbed. So, to give yourself and your patrons the peace and quiet they deserve while still allowing those in your building or facility to remain safe.

1.5 SCOPE /LIMITATION OF THE STUDY

This seminar only focuses on blocking the GSM signal transmission of GSM900 and 1800 MHz. The device only can block the three main operators which are ETISALAT, MTN and GLOBACOM. This is because, the lines are only for Nigerian users and the frequency band range is between 935 to 960 MHz. These requirements fulfil the GSM900 specifications.

1.5 AREA OF APPLICATIONS OF CELL PHONE SERVICE JAMMER

Cell phone service jammer can be placed in public places where the use of phone is prohibited such as in class room, mosque, and conference hall, meeting rooms, library and many more places which need quiet and peaceful environment. This device will block the transmission of GSM signals.