Cell Phone Jammer And What Is Inside Of It

Cell Phone Jammer And What Is Inside Of It

Electronically talking, a mobile phone jamming device is an extremely common device. The simplest jamming device has on/off switch along with one or two LED indicators. The more complicated jamming device has separate switches to activate blocking at diverse frequencies. The parts of a cell jamming device include many various elements. Each jamming device has an aerial to be able to transmit the jamming signals. Sometimes they are hidden inside the jammer's case. On a stronger jamming device, aerials located outside for it to be able to cover wider range. They can be regulated for separate frequencies sometimes.
The main electronic parts of a jamming device are voltage-controlled oscillator which is capable of generating the RF signals that will interrupt the mobile phone signals. The regulating circuit of the jamming device controls the frequency band at which the jamming device has a tendency to broadcast its blocking signal by transmitting a specific voltage to the VCO.

The next thing is the noise generator. It creates random electronic signal in a specific frequency band that allows you to block mobile phone network signals. The high power jamming devices can make a no-cell-phone zone which is as big as a soccer field. The jamming devices utilized by law enforcement agencies may jam cell network service in wide range up to one mile in a radius. The radio frequency amplification unit of the jamming device aids to boost the strength of the RF signal to jamming device is battery operated. Several of them look like mobile phones and they even utilize mobile phone batteries. Note that the stronger mobile phone jamming devices may be plugged right into the common outlet or they may be connected to the vehicle's electric lighter.

Mini Cell Phone Jammers

Mini Cell Phone Jammers
Perfect for the following senarios:
- Class rooms and small seminar halls
- Small Meeting rooms and board rooms
- Private offices
- Bus and vehicles (imagine how you can finally have
  a good undisturbed nap)

Cell Phone shape
Creates a 10M radius of cell phone signal black out area .
Coverage !


- Rechargeable & Replaceable Battery !
- Can use the battery and the charge of NOKIA 3110,8210
- Also works and charges on AC and Car
  12V power (included !)
Available system:
3G!,GPRS,GSM,DCS,CDMA,PDC,TDMA,PHS,PCS,
IDEN, W-CDMA,UMTS
Frequency (MHz) :

850-894Mhz,925-960Mhz,
1805-1990Mhz,2110-2170Mhz
Light weight and super small Size!
Fits-in-a-pocket size !
Now Free Shipping with DHL ! 
3-6 days Delivery !

Weight:Onlly 68g !!

Warranty : 12 month .

In the box :

x1 jammer.
x1 AC wall plug.
x1 car adaptors

Portable Cell Phone Jammer

Perfect for the following senarios:
- Class rooms and small seminar halls
- Meeting rooms and board rooms
- Private offices
- Bus and vehicles
  (imagine how you can finally have
  a good undisturbed nap)
- 3G Coverage !
- Block all cell phone signals around you
- Creates a 2M ~ 10M (about 6 to 32 feet)
  radius of cell phone signal black out area
- Fully metal construction - creates a solid and
..techie feel.
- Built-in 1500mAh battery lasts 3 to 4 hours

-
Also works and charges on AC and Car
12V power with including adaptors
-
Light weight anf very small,fits-in-a-pocket size
Available system:
3G!,GPRS,GSM,DCS,CDMA,PDC,TDMA,PHS,PCS,
IDEN, W-CDMA,UMTS
Frequency (MHz) :

850-894Mhz,925-960Mhz,
1805-1990Mhz,2110-2170Mhz

Dimensions: 95×48×18 mm
Weight: 6.34 oz

In the box :

x1 jammer.
x1 AC wall plug.
x1 car adaptors

3G Handheld Jammer

Introducing the smallest, most sophisticated digital cell phone jammer of its class; a pocket-sized, hand-held mobile device to help prevent disturbances or noise from cellular phone calls at short distances This cell phone jammer is universally compatible with 3G / UMTS / CDMA / GSM / PHS network and has an internal, rechargeable, high-capacity battery.

3G Mini Cell Jammer

3G Mini Cell Jammer

Introducing the smallest, most sophisticated digital cell phone jammer. This mobile device will help prevent disturbances or noise from cellular phone calls at short distances. It is pocket-sized, has a removable, rechargeable, high-capacity battery and is compatible with 3G / UMTS / CDMA / GSM / PHS networks.
Weight  0.20 kgs
Antenna 2 x 3 dBi
Battery 1500 mA Li-ion
Colour Black
Dimensions 60 x 100 x 25 mm
Frequency 850 - 2200 Mhz
Input power 5 Vdc / 110~250 Vac
Jamming area 1 - 10 meter
Operating location Worldwide
Operating time 3 hours
RF output power 1.5 Watt
Supplied with Battery, AC power supply

High Power Portable Jammer

High Power Portable Jammer
Introducing the most sophisticated digital cell phone jammer of its class; a mobile device to help circumvent disturbances or noise from cellular phone calls - a high-power hand-held cell phone jammer with an internal, high-capacity battery, universally compatible with UMTS / 3G / CDMA / GSM / PHS networks.
Weight  0.60 kgs
Antenna 3 x 5 dBi
Battery 3000 mA internal
Colour Silver
Dimensions 110 x 60 x 30 mm
Frequency 850 - 2200 Mhz
Input power 12 Vdc / 110~240 Vac
Jamming area 3 - 20 m
Operating location Worldwide
Operating time 2 hours
RF output power 3 Watt
Supplied with AC power supply

What type of portable cell phone jammers you should buy

What type of portable cell phone jammers you should buy
A radiophone phone jammer is the use of modern high-tech, bailiwick through in-depth reasoning of the mechanism, a umbrella scrutiny of electromagnetic radiation suppression method.
The fabrication of the far interact and management.
The knowledge of radiotelephone sound jammer can be orientated. Acicular tangency, it is as elongate as is needful by the entire plebeian index distribute (knowledge lines) as supercharged nomadic jammers, and I can introduce the associate by the controller. In another language: change if the customer previously bought else manufacturers, added name ambulant shielding method can achieve effective connectivity and direction.
It should be noted, both in inside or outside use, the good interval jammers and there was a positive relation between environmental conditions, much as the distance from the basic station, and locations and so on. Hence, the use of GPS jammers area, should interpret rumbling statement of this broker, to desist uncharged ends and thusly impress the shielding upshot of shielding.
Moving warrantee of GSM port phone signaling jammers and CDMA peregrine phones, equivalent the force it? cadre phone jammer is the front and straight bingle fluid.  Because CDMA phones GSM mobile sound anti-interference performance is far brilliant, so the cadre sound signal jammers invulnerable and effective shield for the CDMA transferable sound GSM super, nearly 2-4 meters.

Espow 2G & 3G CDMA GSM DCS PHS Cell Phone Signal Jammer

Many places especially the testing rooms are strictly prohibit from using cell phones in order to avoid cheating. With this Durable Cell Phone Signal Jammer, supervision works will be much easier. Having two RF frequency channels, you have the chance to choose from RF Frequency 1 850-894MHz, 925-960MHz, 1805-1990MHz, 3G (America Market Frequency) and RF Frequency 2 869-894MHz,925-960MHz, 1805-1880MHz, 3G (Europe Market Frequency), and finally get the optimal one. This cell phone signal jammer can be controlled by an infrared remote control, which can help you operate it easily and conveniently. What's more important is that this cell phone jammer has a large jamming radius which is up to 20 - 40 meters depending on the strength and type of cellular system. So this 50m signal jammer can be used in many big occasions, such as conference room, church, classroom, bank etc.. Long distance cell phone signal jammer can last for working for 3 to 4 days.This cell phone signal jammer also has an excellent performance on other locations where secret and quiet are requested absolutely. Best choice for you!Specifications:Bocker All: GSM、CDMA、PHS、PCS、DCS、3G、IDEN、UMTS、AMPSRF Frequency 1: 850-894MHz, 925-960MHz, 1805-1990MHz, 3G (America Market Frequency)RF Frequency 2: 869-894MHz, 925-960MHz, 1805-1880MHz, 3G (Europe Market Frequency)Isolation signal frequency: - CDMA: 850-894MHz - GSM: 925-960MHz - DCS: 1805-1880MHz - PHS or CDMA1900: 1900-1930MHz or 1930-1980MHz - 3G: 2110-2170MHzTotal Transmission Output: 10 WattShielding Radius:20M－40M (depend on installing places)Power supply: AC adapterRules of installation: UL (E190582) CSA (LR 112971 Level 3)Remote control: Can up and down the power, Can open and close the JammerWork time: After12 hours, need close for 20 minutes,then open it, work well

espow High Power Mobile Phone Signal Jammer Blocker for 2G & 3G Network

If you're looking for a high-power, technologically advanced cellphone jamming solution - you've found it with the Industrial Strength Cell Phone Jammer for CDMA, GSM, DCS,PHS and even 3G! This powerful cellphone disrupting device provides industrial strength frequency jamming with four high gain antennas and an impressive 10 watts of output power! The cell phone blocker has been purposefully designed to wipe out CDMA, GSM, DCS, PHS and 3G mobile phone signals in a 25 - 60 meters radius! It has 2 RF frequency options, they are RF Frequency 1: 850-894MHz, 925-960MHz, 1805-1990MHz, 3G which meets the standard America Market Frequency; and RF Frequency 2: 869-894MHz, 925-960MHz, 1805-1880MHz,3G for Europe Market Frequency. This Signal Jammer Blocker can work continuously. It is really an ideal choice for conference room, church, classroom and bank, etc.

espow Mini Portable 3G GSM CDMA Cell Phone Signal Jammer With Built-in Antenna

Mini Portable 3G GSM CDMA Cell Phone Signal Jammer With Built-in Antenna

Have you ever been interrupted by the uproarious cell phone ringtone when you were making a speech? Are you bothered by students'cheating with high-tech communications equipment in examinations? If you do have this unpleasant experience, we would like to introduce you this signal blocker jammer. This cell phone signal blocker is a high-tech product which is adopted the advanced technology and meticulously produced according to the practical situation of domestic and overseas mobile communication. The cell phone signal blocker can create magnetic shield while in working process. Cell phone signal within 10M will be arbitrarily blocked. Other electronic equipment won't be interfered. This cell phone signal blocker is suitable for many occasions, such as cinema, theatre, library, concert, recording room and so on. The cellular phone jammer also has an excellent performance on other locations where secret and quiet are requested absolutely.
Isolation signal frequency: - 3G: 2110-2170MHz - CDMA: 850-894MHz - GSM: 925-960MHz - DCS: 1805-1880MHz - PHS: 1900-1930MHz - CDMA1900: 1930-1980MHzShielding Radius: 5M - 10M (depend on installing places)Power supply: Rechargeable Li-ion battery,1100mAh,2-3 hours'work time - Tanking use of super-high frequency and mini-power interference technology, high efficiency. - Effectively making subsection, just interfering downlink and no interception on the base station. - Extreme portability, the weigh for machine itself is just 68g. - Slow start us design of circuit .These elements can maintain the s table operation condition with high integration.How a Cell Phone Signal blocker Works:* A jamming device transmits on the same radio frequencies as the cell phone, disrupts the communication between the phone and cell phone base station in the cell phone tower. It's a called a denial-of-service attack* Other jamming devices overpower the cell phone by transmitting a signal on the same frequency and at high enough power that the two signals collide and cancel each other out* Blocker will disrupt a signal regardless of the type of cell phone system in use. They are effective against AMPS, CDMA, TDMA, GSM, PCS, DCS, iDEN, and Nextel systemsFunctions of a Cell Phone Signal Blocker:* It could block any mobile phone signal from coming in. While you are operating businesses you recognize that the individuals are heading for coming in as well as gabbing on their phone the full time* The cell phone signal blocker could check people from being troubled by the phone* Cell phone signal blocker is originally developed for law enforcement and the military to interrupt communications by criminals and terrorists* Corporations use jammers to stop corporate espionage by blocking voice transmissions and photo transmissions from camera phonesNOTE:* Do not place the device directed to the sunlight or near the high temperature fires* While it is working, the surface temperature is about 45 ℃. It is normal. However, if it is higher than 45°C, it is abnormal. Please put the power SW to OFF immediately and try to contact your local distributor or agent* The shielding range of the device will be determined by the local signal strength. In different situation, it will be with different performance* Please try to put the device in a higher position while it is working. It will be better. The suggested height is about 2M* To avoid the loss of function of the device, please try to avoid the device placed on or the metal materials Do not turn on the power before the antennas is installed* Do not put the device near computers, notebook computers, televisions, stereos, and radios and so on , in order not to make some interference for these equipments* If the charged times is more than 500 times and then can not be charged any more , please contact your local dealer or dealer and replace the battery* If the antenna is not properly installed in accordance with the manuals, the shielding range will be not so good. make sure the correct installation before turn on the power

High Power Durable GSM CDMA 3G Cell Phone Signal Jammer

High Power Durable GSM CDMA 3G Cell Phone Signal Jammer

Are you sick of those pesky mobile phone ring tones and MMS tones during your presentations and meetings? Silence everything, with this handy high power 2G & 3G cell phone jammer your meeting room or presentation hall will be whisper quiet. With completely silent operation and adjustable strength for each band, the versatility is there to only block the phone carriers you don't like. A well built heat dissipative design ensures that this unit will not over heat during the meeting and a typical range of 15 - 30 meters will make sure you silence even the far reaches of the room.

We will ship out corret AC adapters according to your location!Specifications:Bocker All: GSM、CDMA、PHS、PCS、DCS、3G、IDEN、UMTS、AMPSIsolation signal frequency: - CDMA: 850-894MHz - GSM: 925-960MHz - DCS: 1805-1880MHz - PHS: 1900-1930MHz - CDMA1900: 1930-1980MHz - 3G: 2110-2170MHzPower supply: AC adapterShielding Radius: 15M -30M (depend on installing places)Rules of installation: UL (E190582) CSA (LR 112971 Level 3)Remote control: Can up and down the power, Can open and close the JammerWork time: After12 hours, need close for 20 minutes,then open it, work wellDimension: 233*33*106mm

1pc Cellular phone jammer1pc AC/DC adapter1pc The manual1pc Steel frame of installation1pc Remote control4pc Antenna

espow Broad Spectrum Cell Phone Jammer for 2G and 3G

Broad Spectrum Cell Phone Jammer for 2G and 3G

There are various places where cell phone using is not allowed, such as conference room, church, hospital and concert. But we can not guarantee that everyone will follow the rule, so how could we do? Here we recommend you this 5-Band (GSM,CDMA,DCS,PHS,3G) Cell Phone Signal Blocker. This cell phone signal jammer could simply block the signals around a certain area, which ensures no use of cell phone. Silence could come as you expected! This cell phone signal blocker provides you with high quality and reliability. It creates a 3 - 15M radius cell phone signal black area. And this cell phone signal jammer creates enough interference to block all cell phone signals around you. Full metal construction creates a solid and technical feeling. And the built-in 1500mAh battery lasts 2 to 3 hours. This cell phone reception blocker is lightweight and small, which is to take with you. This cell phone signal jammer also has an excellent performance on other locations where secret and quiet are requested absolutely. Best choice for you!
Cover interface: Digital-IDEN,TDMA,CDMA,GSM,UMTS,Analog-AMPS,NMT,N-AMPS,TACSIsolation signal frequency: - CDMA: 850-894MHz - GSM: 925-960MHz - DCS: 1805-1880MHz - PHS or CDMA1900: 1900-1930MHz or 1930-1980MHz - 3G: 2110-2170MHzShielding Radius: 3M - 15M (depends on the strength signal in given area)Power supply: Built in Rechargeable Li-ion batteryTypical Battery Life: 2-3 HoursDimension: 100*42*18mm
Package Details:1 * Broad Spectrum Cell Phone Jammer1 * Car Charger1 * AC Adapter (We will ship out corret AC adapters according to your location)3 * Detachable Antennas1 * Power Cable
Points to Note:
Mobile phone signal jammers may not be permissible to import into certain countries due to licensing of broadcasts or other restrictions. Please check your country's customs / telecommunications regulations before placing your order.

How to Buy a Mobile Phone Signal Jammer?

How to Buy a Mobile Phone Signal Jammer?

1. Determin your local wireless network frequency. Such as, in North America, GSM operates on the primary mobile communication bands 850 MHz and 1900 MHz. America uses 700MHz (Verizon Wireless & AT&T 4G LTE), 850Mhz, 1900MHz, 1700/2100MHz (T-Mobile 3G 4G network), 2500MHz(Sprint 4G Network) for their 2G 3G and 4G networks. In Africa, Europe, Middle East and Asia most of the providers use 900 MHz and 1800 MHz bands.
2. Determin your local wireless communications service providers. In America, the six largest are Verizon (GSM CDMA CDMA2000 LTE, etc), AT&T(GSM UMTS WCDMA, etc), Sprint(CDMA, iDEN), T-Mobile USA(GSM UMTS WCDMA, etc), TracFone Wireless, and MetroPCS. You can also invite the Wireless Advisor website, it can be a useful source of information on the frequency Verizon is using in your area.
3. Determin how much area you need the cell phone jammer to cover.
Where to Buy a Cell Phone GPS Jammer?
Since these jammers actively broadcast radio signals they may or may not be legal to possess or operate based on the specific laws, espow is a nice choice to find your jammers. 1-Year Warranty + 30-Day Money Back Guarantee

cell phone jammer have been used in jails there

cell phone jammer have been used in jails there

cell phone signal jammers Use: all kinds of examination room, gas stations, churches, courts, libraries, convention centers, theaters, hospitals, military areas and other use is prohibited place.
Venue: to prevent and eliminate the use of modern communication tools cheating candidates.The cell phone jammer company has experience of research and development for more than ten years.
Gas stations, oil depots: microwave signals to avoid interference caused by fire, explosion.
Church: mobile phone signal noise can be removed in order to maintain religious sites, solemn, solemn.
Library: You can maintain a quiet environment for reading and study.
Theater: As high-end entertainment, noise can be removed to maintain audience interest in the program.
Hospital: when using the phone to prevent the harm caused by the human body and medical equipment failure.
Court: the court can maintain the solemn and sacred.
Military areas: to prevent the leakage of military secrets.
use Hitachi chip high-performance components and integrated circuits and chip imports mainstream Harris master chip design patents, intellectual property, product failure rates less than 1%, the transmit power below the national level, no effect on environmentally friendly products on the human body. aluminum body, excellent heat dissipation.Around 23 jails in Beijing and Tianjin have applied the MDPB-5E mobile phone jammer.
only without affecting the uplink downlink frequency shielding frequency, base station does not affect the normal operation, the body temperature above 10 degrees lower than their peers.
CDMA has excellent shielding properties. CDMA mobile communication network by the spread spectrum, multiple access, cellular network, frequency reuse of a combination of several technologies, with the frequency domain, time domain and code domain three-dimensional
Collaborative signal processing, therefore, has a good anti-jamming, anti-multipath fading and other features. As CDMA technology with these characteristics in the existing conditions, even if the letter to increase the shielding device

GSM Jammers And The Details Of Their Work

GSM Jammers And The Details Of Their Work
GSM jammer created by Jammer Store Inc. is a jammer that transfers signal on the same frequency band that the GSM system works, the blocking success when the cell phones are located in the zone where the jammer is used. Jamming goal is to block an interfering signal into the frequency of communication, so that the signal is being submerged with such a kind of interference.

The GSM interface utilizes two absolutely different multiplexing schemes: Time-division multiple access (TDMA) and frequency division multiple access (FDMA). The spectrum is divided into 200 KHz channels, and every channel is divided into 8 time-slots.

Frequency hopping in GSM is intended, for the diminution of the fading that was caused by the moments of subscribers. The sequence may utilize 64 frequencies, an insignificant number if to compare with the military systems constructed to avoid blocking. The speed of GSM is two hundred hops. Though FH doesn’t aid in protection of blocking, towards mistake correction schedule, GSM system can save GSM against the blockage.

GSM system can withstand cuts in traffic channel connection. Their reason is the loss of propagation, because of the bridges. As usual different cell is utilized to held communication when the BTS has disconnected. The GSM provides two possible solutions: first hand-over, when the disconnection is available, second is called the re-establishment when the initial connection is lost. Hand-over solutions are based on the transmitting quality and the reception measure that is carried by the MS and BTS.  The GSM RACH access scheme is very simple: if the request is not answered, the cell phone station is going to repeat it after the interval.