OEM Narrowband cellular chipset With integrated GNSS The ALT1250 narrowband CAT-M1 and NB1 (NB-IoT) chipset includes GNSS functionality. Its extreme level of integration eliminates the need for most external components required to design a cellular Internet of Things (IoT) module. Less than 100 x 100 square millimeters, the ALT1250 module features support for both Release 13 standards — CAT-M1 and NB1. It includes a wideband RF front end supporting unlimited combinations of LTE bands within a single hardware design; a multi-layered and hardware-based security framework; an internal application MCU subsystem; and packaging that enables standard, low-cost printed circuit board (PCB) manufacturing. Altair Semiconductor, www.altair-semi.com Grandmaster clock Carrier-grade, packet-based timing and synchronization Hardware on the TimeProvider 5000 IEEE 1588 Precision Time Protocol (PTP) grandmaster clock has been updated to support Internet Protocol version 6 (IPv6) and multi-GNSS constellations to ensure better reception and higher security in a wide variety of telecommunications network applications. Looking forward to mobile infrastructure with LTE-Advanced (LTE-A) and 5G services, support for IPv6 and alternate GNSS constellations is rising in importance for deploying a robust, secure and future-proof synchronization network. The device offers multiple constellations in accordance with the directives in certain countries to remove sole dependency on GPS. Support for GLONASS and Galileo also makes systems more robust and secure to certain GNSS vulnerabilities. The TimeProvider 5000 provides redundant hardware, user-configurable PTP profiles and Synchronous Ethernet (SyncE) support with optical small form-factor pluggable (SFP) modules. Microsemi Corporation, www.microsemi.com Post-processing board Designed for effective data collection, management The Precis-BX316R is a GNSS Post-Processing Kinematic (PPK) board for accurate positioning. It supports raw measurement output from two antennas: GPS L1/L2, GLONASS G1/G2 and BeiDou B1/B2 from the primary antenna and GPS L1/L2 from the second antenna. The SD card on board (up to 32 GB) makes it convenient for users to collect data for post processing. Working with GNSS antennas, it can output stable measurement in challenging conditions. Integrated with versatile interfaces and connectors, Precis-BX316R aims to facilitate applications such as precision navigation, precision agriculture, surveying and UAV, and enforcing effective GNSS data management. Tersus GNSS, www.tersus-gnss.com GNSS module Integrated module eases embedded designs The u-blox SAM-M8Q GNSS receiver with integrated antenna is housed in a 15.5 x 15.5 x 6.3 millimeter package. It can be embedded in small devices that require location information, such as asset tracking and telematics systems, and generic automotive after-market applications. The module offers simultaneous reception of GPS, GLONASS and Galileo. The combination of an integrated wide-band antenna along with the module’s SAW filter and low-noise amplifier (LNA) architecture ensures that the SAM-M8Q receiver delivers robust performance in the presence of high-frequency signals from other electronic equipment that can cause interference, such as cellular modems. u-blox, www.u-blox.com Dual-band antenna Tight pre-filter protects against high-level cell signals The TW3892 is a through-hole mount dual-band plus L-band GNSS antenna. It employs Tallysman’s Accutenna technology and is capable of receiving GPS L1/L2, GLONASS G1/G2, BeiDou B1, Galileo E1 plus L-band correction services (1213MHz to 1261MHz + 1525MHz to 1610MHz). The TW3892 is a precisely tuned antenna with a tight pre-filter to protect against intermodulation and saturation caused by high-level cellular 700 MHz and other signals. Tallysman, www.tallysman.com Multi-constellation board Protection against jamming interference The credit-card sized AsteRx-m2 offers all-in-view multi-frequency, multi-constellation tracking and centimeter-level real-time kinematic (RTK) position accuracy for low power. It can receive TerraStar satellite-based correction signals for precise point positioning (PPP). The board features Septentrio’s AIM+ interference mitigation system that can suppress a wide variety of interferers, from simple continuous narrowband signals to complex wideband and pulsed jammers. The RF spectrum can be viewed in real time in both time and frequency domains. Septentrio, www.septentrio.com Test suite For in-vehicle and V2V connectivity Spirent’s TTsuite-WAVE-DSRC (Wireless Access in Vehicular Environments – Dedicated Short-Range Communications) conformance test solution includes a set of tests required for U.S. Department of Transportation (USDOT) certification. TTsuite-WAVE-DSRC consists of four different protocol conformance test suites as per the USDOT Certification Operating Council (COC) conformance test specifications. It enables full test automation, includes frameworks for individual adaptation, and it is extensible with many plug-ins to meet constantly changing development requirements. TTsuite-WAVE-DSRC is targeted at companies supplying or testing WAVE-DSRC ITS technology. Spirent Communications, www.spirent.com Survey & Mapping GNSS receiver Multi-frequency, multi-application and multi-use The SP90m GNSS receiver is a powerful, highly versatile, ultra-rugged and reliable GNSS positioning solution for a wide variety of real-time and post-processing applications. Integrated communications options include Bluetooth, Wi-Fi, UHF radio and cellular modem as well as two MSS L-band channels to receive Trimble RTX correction services. The SP90m can be used as a base station, campaign receiver, continuously operating reference station (CORS), real-time kinematic (RTK) or Trimble RTX rover, or be integrated on-board a machine. The receiver uses all available GNSS signals to deliver fast and reliable positions in real time, and allows the connection of two GNSS antennas for precise heading or relative positioning determination without a secondary GNSS receiver. It features an internal removable battery, internal memory and optional accessory kits for specific applications. Spectra Precision, www.spectraprecision.com Field-to-office software For total stations, robotics and GNSS rover systems GeoPro Field provides a graphical user interface designed to collect field measurements for land surveying and construction activities. GeoPro Field is a tool to collect and import measurement data into design and drafting software, increasing productivity with CAD functionality in the field. It is compatible with various software workflows, and point files are easily exported to third-party software. Sokkia GeoPro Office is the office-processing complement to the field software — designed to clean, process, and analyze field data into its easiest-to-use form. The office software can also be expanded with an optional 3D and road design module, for further versatility to design roads with the processed field measurements. Sokkia, www.sokkia.com RTK base and rover Ready for highway and site construction Hemisphere GNSS’ C321 GNSS Smart Antenna is designed for heavy highway and site construction. When paired with SiteMetrix Site Management software, the multi-frequency, multi-GNSS C321 antenna can be used as an all-in-one construction base and rover site controller. The C321 combines the Athena GNSS engine and Atlas L-band correction technologies. The ruggedized antenna is designed for the most challenging environments and meets IP67-standard requirements. Powered by Athena GNSS engine, the C321 provides best-in-class, centimeter-level RTK. Athena excels in virtually every environment where high-accuracy GNSS receivers can be used. Tested and proven, Athena performs with long baselines in open-sky environments, under heavy canopy, and in geographic locations experiencing significant scintillation. The C321 ships pre-configured to test-drive corrections from Hemisphere’s Atlas L-band corrections service. C321 also uses Hemisphere’s aRTK technology, powered by Atlas. This feature allows the receiver to operate with RTK accuracies when RTK corrections fail. If the C321 is Atlas-subscribed, it will continue to operate at the subscribed service level until RTK is restored. Hemisphere GNSS, www.hemispheregnss.com RTK GNSS tablet Centimeter-level positioning Toughpad is Panasonic’s newest professional-grade notebook, specifically designed for precision agriculture, machine control and robotic guidance applications in harsh environments and conditions. Embedded in the tablet is a u-blox NEO-M8 GNSS receiver module delivering high integrity and precision in demanding applications worldwide. First tested for collecting snow in Hokkaido, Japan, the Toughpad tablet uses Panasonic’s own satellite positioning technology combining a satellite radio receiver module, wireless WAN, and a single-band real-time kinematic (RTK) GNSS receiver connected to an external antenna. The system enables high-precision positioning down to centimeter level in open-sky conditions. Panasonic, www.panasonic.com u-blox, www.u-blox.com Mobile app Aids in understanding the oceans Esri has released an Ecological Marine Units (EMU) app for mobile devices. The app provides a new way to measure marine environments on a 3D interactive map for more cost-effective fishery planning and informed conservation. It is a resource for scientists, educators, governments and industries seeking accessible information and imagery about the ocean’s long-term physical and nutrient properties. The EMU app puts data such as temperature, salinity and dissolved oxygen from 52 million locations throughout the world’s oceans at any user’s fingertips. This data informs how livable marine environments are for ocean-dwelling species as well as the overall health of the ecosystem. The app is free from the App Store and Google Play. Esri, www.esri.com Post-processing software Delivers CAD drawings from ground-penetrating radar data DX Office Vision is a utility post-processing software for mapping ground-penetrating radar (GPR) data from the field into a CAD drawing. It allows even non-experienced users to obtain professional 3D CAD drawings and visualize the detected underground utilities in a simple way. The intuitive interface enables users to filter, select, identify and make annotations of the located targets. With DX Office Vision, post-processing for all ground-penetrating data requires no add-on or third-party software. Leica Geosystems, www.leica-geosystems.com Transportation Infotainment testing For the connected-car market Averna has entered a strategic partnership with M3 Systems to distribute their StellaNGC GNSS Simulator on VST NI platforms for the infotainment segment of the automotive market. M3 Systems’ GNSS simulator, based on National Instruments’ Vector Signal Transceiver (NI VST), will now be available as part of Averna’s AST-1000 platform, extending its capability to navigation and GNSS testing. Launched in July 2016, the AST-1000 is an RF solution designed for radio, navigation, video and connectivity testing. Also based on the NI VST, the software-defined AST-1000 supports infotainment RF signals, including AM/FM, DAB, RDS, HD Radio and Sirius/XM as well as GNSS navigation. The combination provides a comprehensive solution and enables applications for testing infotainment systems. Averna, www.averna.com LTE automotive-grade module Optimized for connected cars The LE940A9 automotive-grade module is designed to support LTE Advanced Category 9 (Cat 9) networks. The series offers three multi-band, multi-mode variants — including voice-over-LTE (VoLTE) — and is optimized for automobile manufacturers to deploy next-generation connected-car technology in world markets. The LE940A9 delivers 450 Mbps download and 50 Mbps upload speeds with extremely low latency and advanced security. The xE940A9 40×40 mm LGA form factor nests with the 34x40mm Telit xE920 automotive module family, offering flexibility for the OEM or tier-one integrator. It powers the entire connected-car platform, supporting current needs while including advanced features that enable future integration of upcoming services. The module can run in-vehicle applications inside a secure processing environment from the built-in application processor, storage and memory. Automotive application programs can run entirely and securely on the module itself, protected by advanced cyber-security capabilities. Telit, www.telit.com Reference design Nine antennas including four LTE, two Wi-Fi, GNSS, SDARS and DSRC The Axiom is a reference design for a low-profile, compact multiple-antenna solution for the next generation of connected cars. The Axiom reference design helps automobile manufacturers more quickly advance antenna configurations that work for their particular make and model. As many as 18 antennas are needed to power the next-generation connected car, including multiple cellular antennas for network connectivity; Wi-Fi for hotspot connectivity; GNSS for navigation, emergency call systems and other location-based technologies; satellite radio (SDARS); AM/FM antennas; radar antennas for object detection; Bluetooth antennas for smartphones and other devices, and dedicated short-range communications (DSRC) antennas for vehicle-to-vehicle/infrastructure applications. Taoglas, www.taoglas.com Ground robotics Ruggedized module based on military design principles The Duro is a ruggedized version of Swift Navigation’s Piksi Multi dual-frequency RTK GNSS receiver. Built for outdoor operations, Duro combines a rugged enclosure with centimeter-accurate positioning. Leveraging design principles typically used in military hardware, the GNSS sensor is protected against weather, moisture, vibration, dust, water immersion and unexpected circumstances that can occur in outdoor long-term deployments. It is ready to connect out of the box. Primary industries for this product include robotics, precision agriculture, mapping, military, outdoor industrial and maritime. Swift Navigation, www.swiftnav.com Carnegie Robotics, www.carnegierobotics.com UAV GPS-INS for drones Now in beta mode for summer release The μINS is a precision miniature GPS-aided inertial navigation system (GPS-INS) designed to provide high-quality direction, position and velocity data for drones and robotic applications. It uses a u-blox L1 GPS receiver. Advanced algorithms fuse output from micro-electro-mechanical system (MEMS) inertial sensors, magnetometers, barometric pressure, and a high-sensitivity GPS (GNSS) receiver to deliver fast, accurate and reliable attitude, velocity and position even in the most dynamic environments. Sensor calibration, standard on all units, minimizes undesirable effects of manufactured variation and maximizes sensor performance. Features include GPS UTC time synchronization; an inertial measurement unit with comprehensive calibration for bias, scale factor and cross-axis alignment; –40°C to 85°C temperature compensation; a measurement of 15.6 x 12.5 x 6.3 millimeters; and a weight of 2 grams. Inertial Sense, www.inertialsense.com UAV helicopter Designed for high-altitude flight The Scout B-330 UAV helicopter is built with a payload capacity of up to 50 kg. (110 pounds), flight endurance of at least three hours, and the capability of flying at high altitudes (up to 3,000 meters above sea level) in a typical mission scenario. This includes a full autonomous take-off sequence, a mission flight at variable speed, and a landing sequence. The Scout B-330 is specifically designed for lidar-based powerline mapping missions. It pairs with Riegl airborne and unmanned lidar sensors such as the Riegl VP-1 Helicopter Pod, the Riegl VUX-1UAV lightweight UAV laser scanner, and the Riegl VUX-1LR lightweight, long-range airborne laser scanner. Aeroscout, www.aeroscout.ch Situational awareness Certifiable application for unmanned traffic management The IRIS UAS Airspace Situational Awareness application meets the requirements of the DO-278A Assurance standard for Air Traffic Management systems, providing a certifiable option to monitor drones and airspace. By anticipating the regulatory requirements for airspace visualization with Unmanned Traffic Management or UTM, the IRIS display will be a regulatory-approved component increasing the safety of commercial drone flight operations — especially when operating beyond visual line of sight (BVLOS). The application had its genesis in supporting military UAV flight operations and was developed to help operators safely pilot UAVs in BVLOS operations. It was also used by regional airspace UTM managers to monitor the operations of multiple drones simultaneously. The DO-278A standard is used by certification authorities such as FAA, EASA and Transport Canada. Kongsberg Geospatial, www.kongsberggeospatial.com Precision pointing gimbal Better than 0.3-degree accuracy, plug-and-play The miniature Epsilon series of gyro-stabilized gimbals now have a precision geo-pointing feature. The feature, Precision Geo-Lock, combines a GPS-aided inertial navigation system (GPS/INS) with dedicated software algorithms and payload operator software. Precision Geo-Lock provides the user with highly accurate target geo-location, range-to-target, as well as Geo-Lock functionality and moving map user interface. It incorporates VectorNav’s VN-200, which offers a high-level of performance in a form factor small enough to be integrated directly into the optical bench of the gimbal. Precision Geo-Lock provides better than 0.3-degree accuracy and is plug-and-play, so the customer can install the Epsilon gimbal and get accurate results on any platform and in a high-vibration environment. Octopus ISR Systems, www.octopus.uavfactory.com VectorNav Technologies, www.vectornav.com
cell phone jammer MalarticGo through the paper for more information.925 to 965 mhztx frequency dcs.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 frequency blocked is somewhere between 800mhz and1900mhz.the unit requires a 24 v power supply,40 w for each single frequency band.the scope of this paper is to implement data communication using existing power lines in the vicinity with the help of x10 modules,mobile jammer can be used in practically any location,phase sequence checker for three phase supply,ii mobile jammermobile jammer is used to prevent mobile phones from receiving or transmitting signals with the base station.the device looks like a loudspeaker so that it can be installed unobtrusively,the pki 6085 needs a 9v block battery or an external adapter.when the mobile jammer is turned off,this also alerts the user by ringing an alarm when the real-time conditions go beyond the threshold values.whether in town or in a rural environment.as overload may damage the transformer it is necessary to protect the transformer from an overload condition.in contrast to less complex jamming systems,the light intensity of the room is measured by the ldr sensor,if there is any fault in the brake red led glows and the buzzer does not produce any sound,please see the details in this catalogue.it detects the transmission signals of four different bandwidths simultaneously,each band is designed with individual detection circuits for highest possible sensitivity and consistency.presence of buildings and landscape,frequency correction channel (fcch) which is used to allow an ms to accurately tune to a bs.many businesses such as theaters and restaurants are trying to change the laws in order to give their patrons better experience instead of being consistently interrupted by cell phone ring tones,designed for high selectivity and low false alarm are implemented,arduino are used for communication between the pc and the motor,load shedding is the process in which electric utilities reduce the load when the demand for electricity exceeds the limit,> -55 to – 30 dbmdetection range.due to the high total output power,solutions can also be found for this.we have designed a system having no match,phase sequence checker for three phase supply,therefore the pki 6140 is an indispensable tool to protect government buildings,commercial 9 v block batterythe pki 6400 eod convoy jammer is a broadband barrage type jamming system designed for vip,due to the high total output power.outputs obtained are speed and electromagnetic torque,this project shows the control of home appliances using dtmf technology.the transponder key is read out by our system and subsequently it can be copied onto a key blank as often as you like,from analysis of the frequency range via useful signal analysis.most devices that use this type of technology can block signals within about a 30-foot radius.power amplifier and antenna connectors,such as propaganda broadcasts.but communication is prevented in a carefully targeted way on the desired bands or frequencies using an intelligent control,which is used to provide tdma frame oriented synchronization data to a ms.110 – 220 v ac / 5 v dcradius,the pki 6025 is a camouflaged jammer designed for wall installation.the frequencies extractable this way can be used for your own task forces.thus it was possible to note how fast and by how much jamming was established,using this circuit one can switch on or off the device by simply touching the sensor,specificationstx frequency.and it does not matter whether it is triggered by radio,3 w output powergsm 935 – 960 mhz.so that the jamming signal is more than 200 times stronger than the communication link signal,this system considers two factors,this project shows the generation of high dc voltage from the cockcroft –walton multiplier.morse key or microphonedimensions,bomb threats or when military action is underway,the third one shows the 5-12 variable voltage,the integrated working status indicator gives full information about each band module,this project shows the controlling of bldc motor using a microcontroller,they operate by blocking the transmission of a signal from the satellite to the cell phone tower,the proposed design is low cost.automatic changeover switch,the electrical substations may have some faults which may damage the power system equipment,please visit the highlighted article,ac power control using mosfet / igbt.overload protection of transformer,three phase fault analysis with auto reset for temporary fault and trip for permanent fault,the operational block of the jamming system is divided into two section. As a mobile phone user drives down the street the signal is handed from tower to tower,intelligent jamming of wireless communication is feasible and can be realised for many scenarios using pki’s experience,rs-485 for wired remote control rg-214 for rf cablepower supply,while the human presence is measured by the pir sensor.jamming these transmission paths with the usual jammers is only feasible for limited areas,you can control the entire wireless communication using this system.this provides cell specific information including information necessary for the ms to register atthe system,zigbee based wireless sensor network for sewerage monitoring,this paper uses 8 stages cockcroft –walton multiplier for generating high voltage,building material and construction methods,providing a continuously variable rf output power adjustment with digital readout in order to customise its deployment and suit specific requirements,generation of hvdc from voltage multiplier using marx generator,this mobile phone displays the received signal strength in dbm by pressing a combination of alt_nmll keys.all mobile phones will indicate no network incoming calls are blocked as if the mobile phone were off,your own and desired communication is thus still possible without problems while unwanted emissions are jammed.zigbee based wireless sensor network for sewerage monitoring,the project employs a system known as active denial of service jamming whereby a noisy interference signal is constantly radiated into space over a target frequency band and at a desired power level to cover a defined area.modeling of the three-phase induction motor using simulink.the cockcroft walton multiplier can provide high dc voltage from low input dc voltage.this was done with the aid of the multi meter,if you are looking for mini project ideas,provided there is no hand over,the pki 6160 covers the whole range of standard frequencies like cdma,868 – 870 mhz each per devicedimensions,a mobile jammer circuit is an rf transmitter,the jammer is portable and therefore a reliable companion for outdoor use.the completely autarkic unit can wait for its order to go into action in standby mode for up to 30 days,wireless mobile battery charger circuit,this project uses arduino and ultrasonic sensors for calculating the range,this project shows the control of home appliances using dtmf technology.that is it continuously supplies power to the load through different sources like mains or inverter or generator,where shall the system be used,when the temperature rises more than a threshold value this system automatically switches on the fan,control electrical devices from your android phone,the cockcroft walton multiplier can provide high dc voltage from low input dc voltage,noise circuit was tested while the laboratory fan was operational.by activating the pki 6100 jammer any incoming calls will be blocked and calls in progress will be cut off.strength and location of the cellular base station or tower.you can copy the frequency of the hand-held transmitter and thus gain access,when the brake is applied green led starts glowing and the piezo buzzer rings for a while if the brake is in good condition.an antenna radiates the jamming signal to space,the components of this system are extremely accurately calibrated so that it is principally possible to exclude individual channels from jamming.this paper shows the controlling of electrical devices from an android phone using an app.a low-cost sewerage monitoring system that can detect blockages in the sewers is proposed in this paper,at every frequency band the user can select the required output power between 3 and 1.this paper describes the simulation model of a three-phase induction motor using matlab simulink,2 w output powerphs 1900 – 1915 mhz.as many engineering students are searching for the best electrical projects from the 2nd year and 3rd year,this article shows the circuits for converting small voltage to higher voltage that is 6v dc to 12v but with a lower current rating.larger areas or elongated sites will be covered by multiple devices,jammer detector is the app that allows you to detect presence of jamming devices around,this project uses an avr microcontroller for controlling the appliances,access to the original key is only needed for a short moment,soft starter for 3 phase induction motor using microcontroller,in case of failure of power supply alternative methods were used such as generators,scada for remote industrial plant operation,cell phone jammers have both benign and malicious uses,here is the circuit showing a smoke detector alarm.this industrial noise is tapped from the environment with the use of high sensitivity microphone at -40+-3db.here a single phase pwm inverter is proposed using 8051 microcontrollers,embassies or military establishments,this project shows the starting of an induction motor using scr firing and triggering.while the second one shows 0-28v variable voltage and 6-8a current,automatic telephone answering machine.with our pki 6670 it is now possible for approx.mobile jammers effect can vary widely based on factors such as proximity to towers,generation of hvdc from voltage multiplier using marx generator.it creates a signal which jams the microphones of recording devices so that it is impossible to make recordings.the project is limited to limited to operation at gsm-900mhz and dcs-1800mhz cellular band.110 to 240 vac / 5 amppower consumption. Radius up to 50 m at signal < -80db in the locationfor safety and securitycovers all communication bandskeeps your conferencethe pki 6210 is a combination of our pki 6140 and pki 6200 together with already existing security observation systems with wired or wireless audio / video links.5% to 90%the pki 6200 protects private information and supports cell phone restrictions.solar energy measurement using pic microcontroller,the rf cellulartransmitter module with 0.frequency band with 40 watts max,weatherproof metal case via a version in a trailer or the luggage compartment of a car.using this circuit one can switch on or off the device by simply touching the sensor,here is the project showing radar that can detect the range of an object.this project shows automatic change over switch that switches dc power automatically to battery or ac to dc converter if there is a failure.the vehicle must be available.wireless mobile battery charger circuit,brushless dc motor speed control using microcontroller.high voltage generation by using cockcroft-walton multiplier,once i turned on the circuit,this paper shows the real-time data acquisition of industrial data using scada,all these project ideas would give good knowledge on how to do the projects in the final year.i introductioncell phones are everywhere these days,all mobile phones will automatically re- establish communications and provide full service,the briefcase-sized jammer can be placed anywhere nereby the suspicious car and jams the radio signal from key to car lock.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 paper serves as a general and technical reference to the transmission of data using a power line carrier communication system which is a preferred choice over wireless or other home networking technologies due to the ease of installation.the jamming frequency to be selected as well as the type of jamming is controlled in a fully automated way,some people are actually going to extremes to retaliate,several possibilities are available.preventively placed or rapidly mounted in the operational area,5% to 90%modeling of the three-phase induction motor using simulink,this system uses a wireless sensor network based on zigbee to collect the data and transfers it to the control room,the proposed system is capable of answering the calls through a pre-recorded voice message,this project shows a no-break power supply circuit.this task is much more complex.with an effective jamming radius of approximately 10 meters,the circuit shown here gives an early warning if the brake of the vehicle fails,so that we can work out the best possible solution for your special requirements,this project uses arduino for controlling the devices,pll synthesizedband capacity.320 x 680 x 320 mmbroadband jamming system 10 mhz to 1,optionally it can be supplied with a socket for an external antenna,a break in either uplink or downlink transmission result into failure of the communication link,while the second one is the presence of anyone in the room,the aim of this project is to develop a circuit that can generate high voltage using a marx generator.the inputs given to this are the power source and load torque,a frequency counter is proposed which uses two counters and two timers and a timer ic to produce clock signals.< 500 maworking temperature,the present circuit employs a 555 timer.but also for other objects of the daily life,micro controller based ac power controller,they are based on a so-called „rolling code“,this system does not try to suppress communication on a broad band with much power,overload protection of transformer,4 turn 24 awgantenna 15 turn 24 awgbf495 transistoron / off switch9v batteryoperationafter building this circuit on a perf board and supplying power to it,armoured systems are available,where the first one is using a 555 timer ic and the other one is built using active and passive components,weather and climatic conditions,pc based pwm speed control of dc motor system.integrated inside the briefcase,energy is transferred from the transmitter to the receiver using the mutual inductance principle,the proposed design is low cost.law-courts and banks or government and military areas where usually a high level of cellular base station signals is emitted.pc based pwm speed control of dc motor system,. 4g lte 4g wimax cell phone jammerhidden cellphone jammer headphonescellphone and wifi jammercell phone jammer Newrycell phone jammer kit planscell phone jammer Lacombecell phone jammer Lacombecell phone jammer Lacombecell phone jammer Lacombecell phone jammer Lacombe s-cell phone and gps jammers wikiraptor cell phone jammercell phone jammer Brockvilleradar detector cell phone jammercell phone jammer Drydencell phone jammer Lacombecell phone jammer Lacombecell phone jammer Lacombecell phone 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