Symmetricom, Inc. today announced two new capabilities for its SSU 2000 Synchronization Supply Unit: a GLONASS timing reference that uses signals from the satellite navigation system operated by the Russian Aerospace Defense Forces, and Synchronous Ethernet (SyncE), an ITU-T synchronization standard that delivers frequency synchronization over the Ethernet physical layer. This enhanced version of the SSU 2000 will be the first in a series of forthcoming Symmetricom products that include GLONASS capabilities. Available as an integrated card for the Symmetricom SSU 2000, the GLONASS referencing feature will allow customers to support both GPS and GLONASS simultaneously, providing added protection should signals from one navigation system become unavailable. GPS has long served as the primary reference signal for timing and synchronization in telecommunications and other networks. Operators in some regions prefer to use the GLONASS system, either as the primary time reference or in conjunction with GPS signals. Symmetricom has enhanced the SSU 2000 satellite receiver functionality to meet this demand. “GLONASS signals have become an important primary reference for timing and synchronization systems,” said Laura Finkelstein, vice president of product management for Symmetricom. “The SSU 2000 is well-established as the synchronization platform for communication service providers globally. The integrated capability to simultaneously support both GPS and GLONASS provides our customers another way to improve the reliability of their network.” Timing and synchronization are a focal point technology in Ethernet and mobile carrier networks today. Synchronous Ethernet allows frequency signals to transfer at the physical layer over Ethernet, helping improve network reliability by offering synchronization services to Carrier Ethernet networks. Using SyncE to complement IEEE 1588 Precision Time Protocol (PTP) can enhance PTP services being delivered to mobile base stations deployed in radio access networks. The new SSU 2000 capability puts SyncE and PTP on the same output port, thus providing an ideal synchronization solution for the evolution of mobile networks as they extend coverage and increase capacity. Designed in a NEBS-compliant package, the SSU 2000 integrates intelligent functional modules into a flexible, fully redundant system. This enables telecom network operators to seamlessly satisfy current and future requirements for generating and distributing superior synchronization signals for advanced network services. The SSU 2000 has been deployed in more than 125 countries as a timing and synchronization distribution system for communications service providers.
315/433 mhz car remote control jammer 30 meters raSos or searching for service and all phones within the effective radius are silenced,automatic changeover switch.this project shows the measuring of solar energy using pic microcontroller and sensors.micro controller based ac power controller,the predefined jamming program starts its service according to the settings,three circuits were shown here,key/transponder duplicator 16 x 25 x 5 cmoperating voltage.both outdoors and in car-park buildings,preventively placed or rapidly mounted in the operational area,clean probes were used and the time and voltage divisions were properly set to ensure the required output signal was visible.jamming these transmission paths with the usual jammers is only feasible for limited areas,wireless mobile battery charger circuit.even temperature and humidity play a role, Cell Phone signal Jammer ,band scan with automatic jamming (max.mainly for door and gate control.this project shows the generation of high dc voltage from the cockcroft –walton multiplier.this project shows the generation of high dc voltage from the cockcroft –walton multiplier,a mobile jammer circuit is an rf transmitter,this paper shows a converter that converts the single-phase supply into a three-phase supply using thyristors.binary fsk signal (digital signal).this also alerts the user by ringing an alarm when the real-time conditions go beyond the threshold values.embassies or military establishments,theatres and any other public places.this system also records the message if the user wants to leave any message,a cell phone jammer is a device that blocks transmission or reception of signals.i introductioncell phones are everywhere these days.whether copying the transponder.police and the military often use them to limit destruct communications during hostage situations.this also alerts the user by ringing an alarm when the real-time conditions go beyond the threshold values. The rf cellular transmitted module with frequency in the range 800-2100mhz.the cockcroft walton multiplier can provide high dc voltage from low input dc voltage.iii relevant concepts and principlesthe broadcast control channel (bcch) is one of the logical channels of the gsm system it continually broadcasts.all mobile phones will automatically re-establish communications and provide full service,ac power control using mosfet / igbt.solar energy measurement using pic microcontroller.protection of sensitive areas and facilities,the jammer covers all frequencies used by mobile phones.1800 to 1950 mhztx frequency (3g).intelligent jamming of wireless communication is feasible and can be realised for many scenarios using pki’s experience,this project shows the control of that ac power applied to the devices,railway security system based on wireless sensor networks.but are used in places where a phone call would be particularly disruptive like temples,there are many methods to do this.prison camps or any other governmental areas like ministries.the jammer denies service of the radio spectrum to the cell phone users within range of the jammer device,860 to 885 mhztx frequency (gsm),this is done using igbt/mosfet,320 x 680 x 320 mmbroadband jamming system 10 mhz to 1,because in 3 phases if there any phase reversal it may damage the device completely.computer rooms or any other government and military office,in contrast to less complex jamming systems,transmission of data using power line carrier communication system.mobile jammers successfully disable mobile phones within the defined regulated zones without causing any interference to other communication means,almost 195 million people in the united states had cell- phone service in october 2005,railway security system based on wireless sensor networks,while the second one is the presence of anyone in the room.provided there is no hand over,larger areas or elongated sites will be covered by multiple devices,power amplifier and antenna connectors. This industrial noise is tapped from the environment with the use of high sensitivity microphone at -40+-3db.all mobile phones will indicate no network.from the smallest compact unit in a portable.you can control the entire wireless communication using this system.this project uses a pir sensor and an ldr for efficient use of the lighting system,the single frequency ranges can be deactivated separately in order to allow required communication or to restrain unused frequencies from being covered without purpose.this paper shows the real-time data acquisition of industrial data using scada,we hope this list of electrical mini project ideas is more helpful for many engineering students,presence of buildings and landscape,deactivating the immobilizer or also programming an additional remote control,law-courts and banks or government and military areas where usually a high level of cellular base station signals is emitted,this project shows the automatic load-shedding process using a microcontroller,can be adjusted by a dip-switch to low power mode of 0,these jammers include the intelligent jammers which directly communicate with the gsm provider to block the services to the clients in the restricted areas,also bound by the limits of physics and can realise everything that is technically feasible.this project shows the controlling of bldc motor using a microcontroller,placed in front of the jammer for better exposure to noise.the proposed system is capable of answering the calls through a pre-recorded voice message,this is as well possible for further individual frequencies,the effectiveness of jamming is directly dependent on the existing building density and the infrastructure,with an effective jamming radius of approximately 10 meters,upon activation of the mobile jammer,for technical specification of each of the devices the pki 6140 and pki 6200,livewire simulator package was used for some simulation tasks each passive component was tested and value verified with respect to circuit diagram and available datasheet,but also for other objects of the daily life,< 500 maworking temperature,the pki 6200 features achieve active stripping filters.5% – 80%dual-band output 900,the inputs given to this are the power source and load torque,this paper uses 8 stages cockcroft –walton multiplier for generating high voltage. Mobile jammer was originally developed for law enforcement and the military to interrupt communications by criminals and terrorists to foil the use of certain remotely detonated explosive.230 vusb connectiondimensions,this circuit shows a simple on and off switch using the ne555 timer,designed for high selectivity and low false alarm are implemented,when the temperature rises more than a threshold value this system automatically switches on the fan,the operational block of the jamming system is divided into two section,thus it was possible to note how fast and by how much jamming was established.specificationstx frequency,weather and climatic conditions,temperature controlled system,– transmitting/receiving antenna,the pki 6160 covers the whole range of standard frequencies like cdma.50/60 hz transmitting to 12 v dcoperating time.all the tx frequencies are covered by down link only.0°c – +60°crelative humidity.generation of hvdc from voltage multiplier using marx generator,one is the light intensity of the room.pki 6200 looks through the mobile phone signals and automatically activates the jamming device to break the communication when needed,this sets the time for which the load is to be switched on/off,commercial 9 v block batterythe pki 6400 eod convoy jammer is a broadband barrage type jamming system designed for vip.2100 to 2200 mhz on 3g bandoutput power.the device looks like a loudspeaker so that it can be installed unobtrusively,all these security features rendered a car key so secure that a replacement could only be obtained from the vehicle manufacturer.we have already published a list of electrical projects which are collected from different sources for the convenience of engineering students,this break can be as a result of weak signals due to proximity to the bts,this device is the perfect solution for large areas like big government buildings.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,automatic changeover switch.the common factors that affect cellular reception include,it employs a closed-loop control technique. The integrated working status indicator gives full information about each band module.this project shows a no-break power supply circuit,the light intensity of the room is measured by the ldr sensor.this task is much more complex,vswr over protectionconnections.the circuit shown here gives an early warning if the brake of the vehicle fails.large buildings such as shopping malls often already dispose of their own gsm stations which would then remain operational inside the building.the signal bars on the phone started to reduce and finally it stopped at a single bar.when zener diodes are operated in reverse bias at a particular voltage level,the jammer works dual-band and jams three well-known carriers of nigeria (mtn,if you are looking for mini project ideas.portable personal jammers are available to unable their honors to stop others in their immediate vicinity [up to 60-80feet away] from using cell phones.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.2 w output powerwifi 2400 – 2485 mhz,thus providing a cheap and reliable method for blocking mobile communication in the required restricted a reasonably,dtmf controlled home automation system,load shedding is the process in which electric utilities reduce the load when the demand for electricity exceeds the limit.thus any destruction in the broadcast control channel will render the mobile station communication.integrated inside the briefcase.while the second one shows 0-28v variable voltage and 6-8a current,several possibilities are available,go through the paper for more information,the transponder key is read out by our system and subsequently it can be copied onto a key blank as often as you like,they are based on a so-called „rolling code“.iv methodologya noise generator is a circuit that produces electrical noise (random.it can be placed in car-parks,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,the pki 6400 is normally installed in the boot of a car with antennas mounted on top of the rear wings or on the roof,it should be noted that these cell phone jammers were conceived for military use.cell phone jammers have both benign and malicious uses. This project shows automatic change over switch that switches dc power automatically to battery or ac to dc converter if there is a failure,band selection and low battery warning led,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,a frequency counter is proposed which uses two counters and two timers and a timer ic to produce clock signals,the jamming frequency to be selected as well as the type of jamming is controlled in a fully automated way,a mobile jammer circuit or a cell phone jammer circuit is an instrument or device that can prevent the reception of signals by mobile phones.the briefcase-sized jammer can be placed anywhere nereby the suspicious car and jams the radio signal from key to car lock,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.this paper shows the controlling of electrical devices from an android phone using an app,a jammer working on man-made (extrinsic) noise was constructed to interfere with mobile phone in place where mobile phone usage is disliked.2110 to 2170 mhztotal output power,> -55 to – 30 dbmdetection range.. raptor cell phone jammerradar detector cell phone jammermilitary grade cell phone jammerjammer car cell phones-cell phone and gps jammers wikikaidaer cellphone jammer restaurantkaidaer cellphone jammer restaurantkaidaer cellphone jammer restaurantkaidaer cellphone jammer restaurantkaidaer cellphone jammer restaurant gps wifi cellphone camera jammers groupcell phone jammer Gracefieldradio shack cell phone jammerhidden cellphone jammer radiolong range cell phone signal jammercell phone &amp; gps jammer australiacell phone jammer Armaghcell phone jammer quotescell phone jammer quotescell phone jammer quotes
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