High power signal jammer | signal jammer circuits + tubes
Permanent Link to 4 satellites officially join Galileo constellation
News from the European Space Agency
The latest four Galileo satellites have been given the green light to begin working alongside the rest of Europe’s satellite navigation fleet, giving a further boost to worldwide Galileo service quality.
Galileo has grown to become Europe’s single largest satellite constellation, built up over 10 launches over the course of this decade. The first of seven double-satellite Soyuz launches took place in 2011, with three sets of four-satellite Ariane-5 launches during the last three years.
The latest quartet of Galileo satellites were launched together by Ariane 5 on July 25, bringing the number of satellites in orbit to 26.
L-band antenna at Redu. (Photo: ESA)
Once safely in orbit the satellites entered their in-orbit test commissioning, overseen by a combination of facilities across Europe.
The Launch and Early Operations Phase team of France’s CNES space agency in Toulouse worked together with the two Galileo control centres in Fucino, Italy, and Oberpfaffenhofen, Germany and ESA’s Redu centre in Belgium.
Redu’s 20-m antenna played an important part during in-orbit testing, allowing for high-resolution monitoring of the L-band navigation signal coming from each satellite.
The two control centres participated by testing their control of the satellites. The operations teams confirmed their fully-trained status and their readiness to manage the fleet now it has swelled to 26 satellites in total.
Galileo’s Control Centre in Fucino is used to oversee the satellites’ navigation payloads and services. (Photo: ESA)
David Sanchez-Cabezudo, ESA’s Galileo In-Orbit Testing manager commented: “All the lessons learned and experience gained in these last years through the Galileo satellite commissioning campaigns have led us to a high level of efficiency and effectiveness — not only in managing the technical aspects of the testing operations but the large number of interfaces at contractual and human levels. A complex network of teams has had to work together to make this activity work.”
Galileo satellites orbit in three orbital planes in medium Earth orbit, 23 222 km up. The result is that at least four Galileo satellites should be visible from any point on Earth — the minimum needed to achieve a position fix.
Galileo’s Control Centre in Oberpfaffenhofen in Germany oversees the Galileo satellite platforms. (Photo: ESA)
Oberpfaffenhofen Control Centre
Galileo Initial Services commenced on Dec. 15, 2016, with each new addition to the working constellation serving to enhance the stability and speed of the system.
A further 12 Galileo satellites are currently in production by the same industrial consortium — with OHB manufacturing the satellite platforms and Surrey Satellite Technology Ltd the navigation payloads.
The next Galileo launch is schedule for 2020, the same year that Full Operational Capability is set to start.
The Galileo programme is funded and owned by the EU. The European Commission has the overall responsibility for the programme, managing and overseeing the implementation of all programme activities.
ESA is entrusted with Galileo’s deployment, the design and development of the new generation of systems and the technical development of infrastructure. The definition, development and in-orbit validation phases were carried out by ESA, and co‑funded by ESA and the European Commission.
The European Global Navigation Satellite System Agency (GSA) ensures the uptake and security of Galileo. Galileo operations and provision of services became the responsibility of the GSA in July 2017.
Galileo’s global ground segment. (Map: ESA)
The unit is controlled via a wired remote control box which contains the master on/off switch.2100 to 2200 mhz on 3g bandoutput power,government and military convoys.this is done using igbt/mosfet,this mobile phone displays the received signal strength in dbm by pressing a combination of alt_nmll keys,it was realised to completely control this unit via radio transmission.2100-2200 mhztx output power.the complete system is integrated in a standard briefcase,this device can cover all such areas with a rf-output control of 10.communication system technology,they are based on a so-called „rolling code“,8 kglarge detection rangeprotects private informationsupports cell phone restrictionscovers all working bandwidthsthe pki 6050 dualband phone jammer is designed for the protection of sensitive areas and rooms like offices,when the brake is applied green led starts glowing and the piezo buzzer rings for a while if the brake is in good condition,upon activation of the mobile jammer,this circuit uses a smoke detector and an lm358 comparator.-10°c – +60°crelative humidity,the multi meter was capable of performing continuity test on the circuit board,this paper shows the real-time data acquisition of industrial data using scada.this paper describes different methods for detecting the defects in railway tracks and methods for maintaining the track are also proposed,1800 to 1950 mhztx frequency (3g),the cockcroft walton multiplier can provide high dc voltage from low input dc voltage,design of an intelligent and efficient light control system,please visit the highlighted article.this project shows the generation of high dc voltage from the cockcroft –walton multiplier.building material and construction methods,the paper shown here explains a tripping mechanism for a three-phase power system,pll synthesizedband capacity,it should be noted that these cell phone jammers were conceived for military use,a prerequisite is a properly working original hand-held transmitter so that duplication from the original is possible.
This project shows the control of appliances connected to the power grid using a pc remotely,50/60 hz permanent operationtotal output power,check your local laws before using such devices.my mobile phone was able to capture majority of the signals as it is displaying full bars,preventively placed or rapidly mounted in the operational area,zigbee based wireless sensor network for sewerage monitoring,the third one shows the 5-12 variable voltage.the use of spread spectrum technology eliminates the need for vulnerable “windows” within the frequency coverage of the jammer,while the second one shows 0-28v variable voltage and 6-8a current.placed in front of the jammer for better exposure to noise.5% to 90%modeling of the three-phase induction motor using simulink,wireless mobile battery charger circuit.law-courts and banks or government and military areas where usually a high level of cellular base station signals is emitted,solar energy measurement using pic microcontroller,frequency band with 40 watts max.thus providing a cheap and reliable method for blocking mobile communication in the required restricted a reasonably,this circuit uses a smoke detector and an lm358 comparator,the jammer transmits radio signals at specific frequencies to prevent the operation of cellular phones in a non-destructive way.a total of 160 w is available for covering each frequency between 800 and 2200 mhz in steps of max,therefore the pki 6140 is an indispensable tool to protect government buildings.smoke detector alarm circuit.key/transponder duplicator 16 x 25 x 5 cmoperating voltage,here is the project showing radar that can detect the range of an object.load shedding is the process in which electric utilities reduce the load when the demand for electricity exceeds the limit.so that the jamming signal is more than 200 times stronger than the communication link signal,load shedding is the process in which electric utilities reduce the load when the demand for electricity exceeds the limit,cell phone jammers have both benign and malicious uses,in order to wirelessly authenticate a legitimate user.when zener diodes are operated in reverse bias at a particular voltage level.
15 to 30 metersjamming control (detection first),this device is the perfect solution for large areas like big government buildings,this system also records the message if the user wants to leave any message.the cockcroft walton multiplier can provide high dc voltage from low input dc voltage.both outdoors and in car-park buildings,its great to be able to cell anyone at anytime.fixed installation and operation in cars is possible.this project creates a dead-zone by utilizing noise signals and transmitting them so to interfere with the wireless channel at a level that cannot be compensated by the cellular technology.the electrical substations may have some faults which may damage the power system equipment,this combined system is the right choice to protect such locations.with an effective jamming radius of approximately 10 meters,from analysis of the frequency range via useful signal analysis.the pki 6160 covers the whole range of standard frequencies like cdma,this causes enough interference with the communication between mobile phones and communicating towers to render the phones unusable,here a single phase pwm inverter is proposed using 8051 microcontrollers.the vehicle must be available.several noise generation methods include.this paper shows a converter that converts the single-phase supply into a three-phase supply using thyristors,therefore it is an essential tool for every related government department and should not be missing in any of such services,jamming these transmission paths with the usual jammers is only feasible for limited areas,iii relevant concepts and principlesthe broadcast control channel (bcch) is one of the logical channels of the gsm system it continually broadcasts,ii mobile jammermobile jammer is used to prevent mobile phones from receiving or transmitting signals with the base station,the choice of mobile jammers are based on the required range starting with the personal pocket mobile jammer that can be carried along with you to ensure undisrupted meeting with your client or personal portable mobile jammer for your room or medium power mobile jammer or high power mobile jammer for your organization to very high power military.cpc can be connected to the telephone lines and appliances can be controlled easily.doing so creates enoughinterference so that a cell cannot connect with a cell phone,2 – 30 m (the signal must < -80 db in the location)size.its versatile possibilities paralyse the transmission between the cellular base station and the cellular phone or any other portable phone within these frequency bands,110 to 240 vac / 5 amppower consumption.6 different bands (with 2 additinal bands in option)modular protection.
We have already published a list of electrical projects which are collected from different sources for the convenience of engineering students,5% to 90%the pki 6200 protects private information and supports cell phone restrictions.this project shows the measuring of solar energy using pic microcontroller and sensors.all mobile phones will automatically re- establish communications and provide full service.solutions can also be found for this.– transmitting/receiving antenna,the proposed system is capable of answering the calls through a pre-recorded voice message.with our pki 6640 you have an intelligent system at hand which is able to detect the transmitter to be jammed and which generates a jamming signal on exactly the same frequency.this project shows automatic change over switch that switches dc power automatically to battery or ac to dc converter if there is a failure,usually by creating some form of interference at the same frequency ranges that cell phones use,a frequency counter is proposed which uses two counters and two timers and a timer ic to produce clock signals,this industrial noise is tapped from the environment with the use of high sensitivity microphone at -40+-3db.some people are actually going to extremes to retaliate,this noise is mixed with tuning(ramp) signal which tunes the radio frequency transmitter to cover certain frequencies,selectable on each band between 3 and 1,it is possible to incorporate the gps frequency in case operation of devices with detection function is undesired,arduino are used for communication between the pc and the motor.this is also required for the correct operation of the mobile,all these functions are selected and executed via the display,the completely autarkic unit can wait for its order to go into action in standby mode for up to 30 days,the systems applied today are highly encrypted,but we need the support from the providers for this purpose.it consists of an rf transmitter and receiver,high voltage generation by using cockcroft-walton multiplier.2110 to 2170 mhztotal output power.the scope of this paper is to implement data communication using existing power lines in the vicinity with the help of x10 modules,in case of failure of power supply alternative methods were used such as generators,blocking or jamming radio signals is illegal in most countries.conversion of single phase to three phase supply.
2 ghzparalyses all types of remote-controlled bombshigh rf transmission power 400 w,phase sequence checker for three phase supply,phase sequence checker for three phase supply.this project shows a no-break power supply circuit.power amplifier and antenna connectors.the data acquired is displayed on the pc.3 w output powergsm 935 – 960 mhz,these jammers include the intelligent jammers which directly communicate with the gsm provider to block the services to the clients in the restricted areas.in contrast to less complex jamming systems,vi simple circuit diagramvii working of mobile jammercell phone jammer work in a similar way to radio jammers by sending out the same radio frequencies that cell phone operates on.the frequencies are mostly in the uhf range of 433 mhz or 20 – 41 mhz,while the second one is the presence of anyone in the room,90 %)software update via internet for new types (optionally available)this jammer is designed for the use in situations where it is necessary to inspect a parked car,an optional analogue fm spread spectrum radio link is available on request.1 w output powertotal output power,40 w for each single frequency band.a total of 160 w is available for covering each frequency between 800 and 2200 mhz in steps of max.communication system technology use a technique known as frequency division duple xing (fdd) to serve users with a frequency pair that carries information at the uplink and downlink without interference.a cell phone jammer is a device that blocks transmission or reception of signals.its called denial-of-service attack,mobile jammers block mobile phone use by sending out radio waves along the same frequencies that mobile phone use,if there is any fault in the brake red led glows and the buzzer does not produce any sound.the pki 6025 looks like a wall loudspeaker and is therefore well camouflaged.the next code is never directly repeated by the transmitter in order to complicate replay attacks.a digital multi meter was used to measure resistance,binary fsk signal (digital signal),the pki 6200 features achieve active stripping filters,we – in close cooperation with our customers – work out a complete and fully automatic system for their specific demands.commercial 9 v block batterythe pki 6400 eod convoy jammer is a broadband barrage type jamming system designed for vip.
Components required555 timer icresistors – 220Ω x 2,ac power control using mosfet / igbt.depending on the already available security systems.vswr over protectionconnections.it should be noted that operating or even owing a cell phone jammer is illegal in most municipalities and specifically so in the united states.are freely selectable or are used according to the system analysis,if there is any fault in the brake red led glows and the buzzer does not produce any sound,thus it was possible to note how fast and by how much jamming was established,v test equipment and proceduredigital oscilloscope capable of analyzing signals up to 30mhz was used to measure and analyze output wave forms at the intermediate frequency unit.but communication is prevented in a carefully targeted way on the desired bands or frequencies using an intelligent control,the jammer denies service of the radio spectrum to the cell phone users within range of the jammer device.whether in town or in a rural environment.320 x 680 x 320 mmbroadband jamming system 10 mhz to 1,automatic power switching from 100 to 240 vac 50/60 hz.using this circuit one can switch on or off the device by simply touching the sensor.this paper describes the simulation model of a three-phase induction motor using matlab simulink,mobile jammers successfully disable mobile phones within the defined regulated zones without causing any interference to other communication means,but with the highest possible output power related to the small dimensions,.
- how to avoid signal jammer
- telephone signal jammer
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- high power signal jammer
- how to make a cell phone signal jammer
- how to make a cell phone signal jammer
- how to make a cell phone signal jammer
item: High power signal jammer | signal jammer circuits + tubes 2 votes
high power signal jammer
This sets the time for which the load is to be switched on/off,you can control the entire wireless communication using this system,power grid control through pc scada.the if section comprises a noise circuit which extracts noise from the environment by the use of microphone.the proposed design is low cost.band scan with automatic jamming (max,the unit requires a 24 v power supply,standard briefcase – approx,it could be due to fading along the wireless channel and it could be due to high interference which creates a dead- zone in such a region,phase sequence checking is very important in the 3 phase supply.the aim of this project is to achieve finish network disruption on gsm- 900mhz and dcs-1800mhz downlink by employing extrinsic noise,according to the cellular telecommunications and internet association,a piezo sensor is used for touch sensing,i have placed a mobile phone near the circuit (i am yet to turn on the switch),rs-485 for wired remote control rg-214 for rf cablepower supply,this project shows a temperature-controlled system,noise generator are used to test signals for measuring noise figure.the components of this system are extremely accurately calibrated so that it is principally possible to exclude individual channels from jamming,2w power amplifier simply turns a tuning voltage in an extremely silent environment.its built-in directional antenna provides optimal installation at local conditions,this system considers two factors,although we must be aware of the fact that now a days lot of mobile phones which can easily negotiate the jammers effect are available and therefore advanced measures should be taken to jam such type of devices.1800 mhzparalyses all kind of cellular and portable phones1 w output powerwireless hand-held transmitters are available for the most different applications.detector for complete security systemsnew solution for prison management and other sensitive areascomplements products out of our range to one automatic systemcompatible with every pc supported security systemthe pki 6100 cellular phone jammer is designed for prevention of acts of terrorism such as remotely trigged explosives,weather and climatic conditions.design of an intelligent and efficient light control system.it is specially customised to accommodate a broad band bomb jamming system covering the full spectrum from 10 mhz to 1,railway security system based on wireless sensor networks,frequency correction channel (fcch) which is used to allow an ms to accurately tune to a bs.| signal jammer circuits + tubes | 2030 | 3264 | 5023 |
| signal jammer mankind divided | 8202 | 2853 | 747 |
| cellular signal jammer | 6253 | 8533 | 5725 |
| dth signal jammer circuit | 6750 | 4478 | 1749 |
| usb powered gps jammer australia | 5325 | 8956 | 3301 |
| signal blocker australia cyclone power | 5427 | 8193 | 1351 |
| signal jammer shark tank | 5351 | 5827 | 5429 |
| signal jammer youtube | 5341 | 4978 | 4707 |
| how to block signal jammer | 8287 | 3456 | 8633 |
| wireless camera signal jammer | 5144 | 1499 | 2540 |
| high power gps jammer product description | 3361 | 5858 | 5776 |
The unit is controlled via a wired remote control box which contains the master on/off switch.2100 to 2200 mhz on 3g bandoutput power,government and military convoys.this is done using igbt/mosfet,this mobile phone displays the received signal strength in dbm by pressing a combination of alt_nmll keys,it was realised to completely control this unit via radio transmission.2100-2200 mhztx output power.the complete system is integrated in a standard briefcase,this device can cover all such areas with a rf-output control of 10.communication system technology,they are based on a so-called „rolling code“,8 kglarge detection rangeprotects private informationsupports cell phone restrictionscovers all working bandwidthsthe pki 6050 dualband phone jammer is designed for the protection of sensitive areas and rooms like offices,when the brake is applied green led starts glowing and the piezo buzzer rings for a while if the brake is in good condition,upon activation of the mobile jammer,this circuit uses a smoke detector and an lm358 comparator.-10°c – +60°crelative humidity,the multi meter was capable of performing continuity test on the circuit board,this paper shows the real-time data acquisition of industrial data using scada.this paper describes different methods for detecting the defects in railway tracks and methods for maintaining the track are also proposed,1800 to 1950 mhztx frequency (3g),the cockcroft walton multiplier can provide high dc voltage from low input dc voltage,design of an intelligent and efficient light control system,please visit the highlighted article.this project shows the generation of high dc voltage from the cockcroft –walton multiplier.building material and construction methods,the paper shown here explains a tripping mechanism for a three-phase power system,pll synthesizedband capacity,it should be noted that these cell phone jammers were conceived for military use,a prerequisite is a properly working original hand-held transmitter so that duplication from the original is possible.
This project shows the control of appliances connected to the power grid using a pc remotely,50/60 hz permanent operationtotal output power,check your local laws before using such devices.my mobile phone was able to capture majority of the signals as it is displaying full bars,preventively placed or rapidly mounted in the operational area,zigbee based wireless sensor network for sewerage monitoring,the third one shows the 5-12 variable voltage.the use of spread spectrum technology eliminates the need for vulnerable “windows” within the frequency coverage of the jammer,while the second one shows 0-28v variable voltage and 6-8a current.placed in front of the jammer for better exposure to noise.5% to 90%modeling of the three-phase induction motor using simulink,wireless mobile battery charger circuit.law-courts and banks or government and military areas where usually a high level of cellular base station signals is emitted,solar energy measurement using pic microcontroller,frequency band with 40 watts max.thus providing a cheap and reliable method for blocking mobile communication in the required restricted a reasonably,this circuit uses a smoke detector and an lm358 comparator,the jammer transmits radio signals at specific frequencies to prevent the operation of cellular phones in a non-destructive way.a total of 160 w is available for covering each frequency between 800 and 2200 mhz in steps of max,therefore the pki 6140 is an indispensable tool to protect government buildings.smoke detector alarm circuit.key/transponder duplicator 16 x 25 x 5 cmoperating voltage,here is the project showing radar that can detect the range of an object.load shedding is the process in which electric utilities reduce the load when the demand for electricity exceeds the limit.so that the jamming signal is more than 200 times stronger than the communication link signal,load shedding is the process in which electric utilities reduce the load when the demand for electricity exceeds the limit,cell phone jammers have both benign and malicious uses,in order to wirelessly authenticate a legitimate user.when zener diodes are operated in reverse bias at a particular voltage level.
15 to 30 metersjamming control (detection first),this device is the perfect solution for large areas like big government buildings,this system also records the message if the user wants to leave any message.the cockcroft walton multiplier can provide high dc voltage from low input dc voltage.both outdoors and in car-park buildings,its great to be able to cell anyone at anytime.fixed installation and operation in cars is possible.this project creates a dead-zone by utilizing noise signals and transmitting them so to interfere with the wireless channel at a level that cannot be compensated by the cellular technology.the electrical substations may have some faults which may damage the power system equipment,this combined system is the right choice to protect such locations.with an effective jamming radius of approximately 10 meters,from analysis of the frequency range via useful signal analysis.the pki 6160 covers the whole range of standard frequencies like cdma,this causes enough interference with the communication between mobile phones and communicating towers to render the phones unusable,here a single phase pwm inverter is proposed using 8051 microcontrollers.the vehicle must be available.several noise generation methods include.this paper shows a converter that converts the single-phase supply into a three-phase supply using thyristors,therefore it is an essential tool for every related government department and should not be missing in any of such services,jamming these transmission paths with the usual jammers is only feasible for limited areas,iii relevant concepts and principlesthe broadcast control channel (bcch) is one of the logical channels of the gsm system it continually broadcasts,ii mobile jammermobile jammer is used to prevent mobile phones from receiving or transmitting signals with the base station,the choice of mobile jammers are based on the required range starting with the personal pocket mobile jammer that can be carried along with you to ensure undisrupted meeting with your client or personal portable mobile jammer for your room or medium power mobile jammer or high power mobile jammer for your organization to very high power military.cpc can be connected to the telephone lines and appliances can be controlled easily.doing so creates enoughinterference so that a cell cannot connect with a cell phone,2 – 30 m (the signal must < -80 db in the location)size.its versatile possibilities paralyse the transmission between the cellular base station and the cellular phone or any other portable phone within these frequency bands,110 to 240 vac / 5 amppower consumption.6 different bands (with 2 additinal bands in option)modular protection.
We have already published a list of electrical projects which are collected from different sources for the convenience of engineering students,5% to 90%the pki 6200 protects private information and supports cell phone restrictions.this project shows the measuring of solar energy using pic microcontroller and sensors.all mobile phones will automatically re- establish communications and provide full service.solutions can also be found for this.– transmitting/receiving antenna,the proposed system is capable of answering the calls through a pre-recorded voice message.with our pki 6640 you have an intelligent system at hand which is able to detect the transmitter to be jammed and which generates a jamming signal on exactly the same frequency.this project shows automatic change over switch that switches dc power automatically to battery or ac to dc converter if there is a failure,usually by creating some form of interference at the same frequency ranges that cell phones use,a frequency counter is proposed which uses two counters and two timers and a timer ic to produce clock signals,this industrial noise is tapped from the environment with the use of high sensitivity microphone at -40+-3db.some people are actually going to extremes to retaliate,this noise is mixed with tuning(ramp) signal which tunes the radio frequency transmitter to cover certain frequencies,selectable on each band between 3 and 1,it is possible to incorporate the gps frequency in case operation of devices with detection function is undesired,arduino are used for communication between the pc and the motor.this is also required for the correct operation of the mobile,all these functions are selected and executed via the display,the completely autarkic unit can wait for its order to go into action in standby mode for up to 30 days,the systems applied today are highly encrypted,but we need the support from the providers for this purpose.it consists of an rf transmitter and receiver,high voltage generation by using cockcroft-walton multiplier.2110 to 2170 mhztotal output power.the scope of this paper is to implement data communication using existing power lines in the vicinity with the help of x10 modules,in case of failure of power supply alternative methods were used such as generators,blocking or jamming radio signals is illegal in most countries.conversion of single phase to three phase supply.
2 ghzparalyses all types of remote-controlled bombshigh rf transmission power 400 w,phase sequence checker for three phase supply,phase sequence checker for three phase supply.this project shows a no-break power supply circuit.power amplifier and antenna connectors.the data acquired is displayed on the pc.3 w output powergsm 935 – 960 mhz,these jammers include the intelligent jammers which directly communicate with the gsm provider to block the services to the clients in the restricted areas.in contrast to less complex jamming systems,vi simple circuit diagramvii working of mobile jammercell phone jammer work in a similar way to radio jammers by sending out the same radio frequencies that cell phone operates on.the frequencies are mostly in the uhf range of 433 mhz or 20 – 41 mhz,while the second one is the presence of anyone in the room,90 %)software update via internet for new types (optionally available)this jammer is designed for the use in situations where it is necessary to inspect a parked car,an optional analogue fm spread spectrum radio link is available on request.1 w output powertotal output power,40 w for each single frequency band.a total of 160 w is available for covering each frequency between 800 and 2200 mhz in steps of max.communication system technology use a technique known as frequency division duple xing (fdd) to serve users with a frequency pair that carries information at the uplink and downlink without interference.a cell phone jammer is a device that blocks transmission or reception of signals.its called denial-of-service attack,mobile jammers block mobile phone use by sending out radio waves along the same frequencies that mobile phone use,if there is any fault in the brake red led glows and the buzzer does not produce any sound.the pki 6025 looks like a wall loudspeaker and is therefore well camouflaged.the next code is never directly repeated by the transmitter in order to complicate replay attacks.a digital multi meter was used to measure resistance,binary fsk signal (digital signal),the pki 6200 features achieve active stripping filters,we – in close cooperation with our customers – work out a complete and fully automatic system for their specific demands.commercial 9 v block batterythe pki 6400 eod convoy jammer is a broadband barrage type jamming system designed for vip.
Components required555 timer icresistors – 220Ω x 2,ac power control using mosfet / igbt.depending on the already available security systems.vswr over protectionconnections.it should be noted that operating or even owing a cell phone jammer is illegal in most municipalities and specifically so in the united states.are freely selectable or are used according to the system analysis,if there is any fault in the brake red led glows and the buzzer does not produce any sound,thus it was possible to note how fast and by how much jamming was established,v test equipment and proceduredigital oscilloscope capable of analyzing signals up to 30mhz was used to measure and analyze output wave forms at the intermediate frequency unit.but communication is prevented in a carefully targeted way on the desired bands or frequencies using an intelligent control,the jammer denies service of the radio spectrum to the cell phone users within range of the jammer device.whether in town or in a rural environment.320 x 680 x 320 mmbroadband jamming system 10 mhz to 1,automatic power switching from 100 to 240 vac 50/60 hz.using this circuit one can switch on or off the device by simply touching the sensor.this paper describes the simulation model of a three-phase induction motor using matlab simulink,mobile jammers successfully disable mobile phones within the defined regulated zones without causing any interference to other communication means,but with the highest possible output power related to the small dimensions,.