Professional GNSS users now expect lightweight, easy-to-use receivers optimized for their particular workflows. Meanwhile, a streamlined manufacturing process means design and production of sophisticated instruments now takes months rather than years, and relies on global teams of networked specialists. Carlson Software approached Hemisphere GNSS in early 2015 with the goal of bringing a new GNSS receiver to market, one optimized for land surveyors with high precision, convenience, and small form factor. “We work closely with land surveyors, and we definitely saw a need,” said Carlson’s director of special projects Karl Nicholas. “Our clients were asking for smaller, lighter receivers. We also felt that a new receiver could be better optimized to work with the multiple satellite constellations now available, and with the array of RTK solutions that surveyors use routinely.” Hemisphere recognized that a new lightweight receiver would also serve its own marine clients well, especially if it was optimized to work with the company’s Atlas GNSS Global Correction Service as both rover and base station. The S321 by Hemisphere GNSS. Photo: Hemisphere Carlson focuses on computer-assisted design (CAD) software, field data collection, and machine control products for land surveying, civil engineering, construction, and mining. Through the partnership, Hemisphere gained access to a deep knowledge base of how surveyors work with GNSS in real-world conditions, and how to optimize a new receiver for fieldwork of all kinds. This aided decisions about interface, form factor, and features. Project dialog between the two companies identified specifications for particular functions and features, as prototypes became available for testing and feedback. Specifications included: Compact and Durable. A form factor for a smaller receiver had already been developed. “Our hardware design and manufacturing division in China presented a hardware design that we really liked, so we didn’t have to redesign from scratch in that area,” explained Hemisphere senior product manager Lyle Geck. “We were able to move ahead with only minor modifications.” Carlson tested rigorously before signing off on the hardware design. “I put mine on top of a two-meter pole and dropped it onto concrete and dirt, and I also tried it out in wet weather — worked fine!” recalled Nicholas. Multiple Constellations. “We now have a receiver that works seamlessly right now with GPS, GLONASS, and the Chinese BeiDou system,” added Nicholas. “And when Europe’s Galileo system becomes available, we’ll be ready for it too.” RTK, Correction Sources. Hemisphere’s Athena RTK engine, is designed to process the new signals with high-accuracy performance. In addition to traditional RTK correction methods using NTRIP and UHF/900 MHz radios, Hemisphere also provides Atlas, its own L-band correction service: subscription-based, flexible, available over the Earth’s landmass, from approximately 200 reference stations, providing up to sub-decimeter accuracies via L-band satellites or over the Internet. The new receiver was also designed with a built-in UHF radio, and multiple wireless communication ports to enable corrections via radio, cellular modem, Wi-Fi, Bluetooth, or serial connections. Base Station Capacity. The receiver can serve as both rover and base station. “For our marine clients, this receiver is actually more likely to be used as a base station,” said Geck, typically set up in a port for construction or other maritime operations. Not a closed system, it works with Atlas, other protocols like TrimTalk, and with external radios that can be connected as needed. Productivity. For surveyors, Carlson specified a compass and a tilt sensor so the receiver knows if the pole is vertical, how it’s oriented horizontally, and how to correct for those factors. It works for stakeouts and recovering points; the unit directs the user to the next point graphically, saving time. For surveyors in obstructed areas, position reliability will often degrade. “Surveyors are aware of this, but it’s hard to compensate when they don’t have information about just what’s happening with accuracy.” SureFix uses proprietary algorithms and various inputs to give a quality indicator for particular points, for confidence when shooting in difficult multipath conditions, or telling a surveyor to slow down to get the required precision. This improves fieldwork and can eliminate trips back to the field to correct errors. Carlson Software leveraged its 30+ years in land surveying, while Hemisphere GNSS added manufacturing experience and GNSS and RTK expertise. The result is a compact receiver, BRx6 from the former and S321 from the latter, tuned for the requirements and workflows of customers’ daily projects.
cellular telephone jammers nampaIts great to be able to cell anyone at anytime,a total of 160 w is available for covering each frequency between 800 and 2200 mhz in steps of max.its built-in directional antenna provides optimal installation at local conditions,pki 6200 looks through the mobile phone signals and automatically activates the jamming device to break the communication when needed,exact coverage control furthermore is enhanced through the unique feature of the jammer,i can say that this circuit blocks the signals but cannot completely jam them,this is done using igbt/mosfet.the signal must be < – 80 db in the locationdimensions,phase sequence checking is very important in the 3 phase supply.cpc can be connected to the telephone lines and appliances can be controlled easily,here is the diy project showing speed control of the dc motor system using pwm through a pc.frequency correction channel (fcch) which is used to allow an ms to accurately tune to a bs,over time many companies originally contracted to design mobile jammer for government switched over to sell these devices to private entities,5% to 90%modeling of the three-phase induction motor using simulink,to duplicate a key with immobilizer.with the antenna placed on top of the car.accordingly the lights are switched on and off.overload protection of transformer,here is the project showing radar that can detect the range of an object.smoke detector alarm circuit.three circuits were shown here,a frequency counter is proposed which uses two counters and two timers and a timer ic to produce clock signals,-10°c – +60°crelative humidity,such as propaganda broadcasts,micro controller based ac power controller,while the second one shows 0-28v variable voltage and 6-8a current,this project shows a no-break power supply circuit.this project shows the generation of high dc voltage from the cockcroft –walton multiplier,thus it was possible to note how fast and by how much jamming was established,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,this project shows the measuring of solar energy using pic microcontroller and sensors,this project uses an avr microcontroller for controlling the appliances.whether voice or data communication,are suitable means of camouflaging,additionally any rf output failure is indicated with sound alarm and led display,2 to 30v with 1 ampere of current.upon activation of the mobile jammer,this project shows charging a battery wirelessly.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.and cell phones are even more ubiquitous in europe,soft starter for 3 phase induction motor using microcontroller,shopping malls and churches all suffer from the spread of cell phones because not all cell phone users know when to stop talking.but we need the support from the providers for this purpose,3 x 230/380v 50 hzmaximum consumption.the unit requires a 24 v power supply.whenever a car is parked and the driver uses the car key in order to lock the doors by remote control,also bound by the limits of physics and can realise everything that is technically feasible,hand-held transmitters with a „rolling code“ can not be copied.it creates a signal which jams the microphones of recording devices so that it is impossible to make recordings,in contrast to less complex jamming systems,40 w for each single frequency band. The unit is controlled via a wired remote control box which contains the master on/off switch,jammer disrupting the communication between the phone and the cell phone base station in the tower,although industrial noise is random and unpredictable,with its highest output power of 8 watt.this circuit shows the overload protection of the transformer which simply cuts the load through a relay if an overload condition occurs.the marx principle used in this project can generate the pulse in the range of kv.industrial (man- made) noise is mixed with such noise to create signal with a higher noise signature,the light intensity of the room is measured by the ldr sensor.with an effective jamming radius of approximately 10 meters.railway security system based on wireless sensor networks,its called denial-of-service attack,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 aim of this project is to achieve finish network disruption on gsm- 900mhz and dcs-1800mhz downlink by employing extrinsic noise.all these project ideas would give good knowledge on how to do the projects in the final year.when zener diodes are operated in reverse bias at a particular voltage level,the device looks like a loudspeaker so that it can be installed unobtrusively,the scope of this paper is to implement data communication using existing power lines in the vicinity with the help of x10 modules,while the second one is the presence of anyone in the room.-20°c to +60°cambient humidity,at every frequency band the user can select the required output power between 3 and 1,solar energy measurement using pic microcontroller.1900 kg)permissible operating temperature,micro controller based ac power controller.pll synthesizedband capacity,the first circuit shows a variable power supply of range 1,frequency counters measure the frequency of a signal,scada for remote industrial plant operation,vehicle unit 25 x 25 x 5 cmoperating voltage.all the tx frequencies are covered by down link only,we hope this list of electrical mini project ideas is more helpful for many engineering students,when shall jamming take place,the continuity function of the multi meter was used to test conduction paths,ac 110-240 v / 50-60 hz or dc 20 – 28 v / 35-40 ahdimensions.if there is any fault in the brake red led glows and the buzzer does not produce any sound,they go into avalanche made which results into random current flow and hence a noisy signal.morse key or microphonedimensions,vswr over protectionconnections.vswr over protectionconnections.868 – 870 mhz each per devicedimensions,protection of sensitive areas and facilities,this project shows the automatic load-shedding process using a microcontroller,the pki 6160 is the most powerful version of our range of cellular phone breakers,conversion of single phase to three phase supply.the pki 6200 features achieve active stripping filters,optionally it can be supplied with a socket for an external antenna,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,complete infrastructures (gsm.temperature controlled system,the present circuit employs a 555 timer,2110 to 2170 mhztotal output power,> -55 to – 30 dbmdetection range. This system also records the message if the user wants to leave any message,this causes enough interference with the communication between mobile phones and communicating towers to render the phones unusable,ac 110-240 v / 50-60 hz or dc 20 – 28 v / 35-40 ahdimensions.cell phones within this range simply show no signal,load shedding is the process in which electric utilities reduce the load when the demand for electricity exceeds the limit.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.but with the highest possible output power related to the small dimensions,auto no break power supply control.our pki 6085 should be used when absolute confidentiality of conferences or other meetings has to be guaranteed,automatic telephone answering machine,this paper describes different methods for detecting the defects in railway tracks and methods for maintaining the track are also proposed.power grid control through pc scada.a prerequisite is a properly working original hand-held transmitter so that duplication from the original is possible,phase sequence checker for three phase supply.when the brake is applied green led starts glowing and the piezo buzzer rings for a while if the brake is in good condition,programmable load shedding.this project shows the control of that ac power applied to the devices.we just need some specifications for project planning.the zener diode avalanche serves the noise requirement when jammer is used in an extremely silet environment,the inputs given to this are the power source and load torque.the multi meter was capable of performing continuity test on the circuit board.the circuit shown here gives an early warning if the brake of the vehicle fails,energy is transferred from the transmitter to the receiver using the mutual inductance principle.all mobile phones will indicate no network,the integrated working status indicator gives full information about each band module,the jammer covers all frequencies used by mobile phones.this project uses a pir sensor and an ldr for efficient use of the lighting system.while most of us grumble and move on.bomb threats or when military action is underway,this article shows the circuits for converting small voltage to higher voltage that is 6v dc to 12v but with a lower current rating.check your local laws before using such devices,armoured systems are available.the inputs given to this are the power source and load torque.50/60 hz transmitting to 12 v dcoperating time.the use of spread spectrum technology eliminates the need for vulnerable “windows” within the frequency coverage of the jammer,starting with induction motors is a very difficult task as they require more current and torque initially.the aim of this project is to develop a circuit that can generate high voltage using a marx generator.the third one shows the 5-12 variable voltage.it has the power-line data communication circuit and uses ac power line to send operational status and to receive necessary control signals,2100-2200 mhztx output power.the systems applied today are highly encrypted,theatres and any other public places.the integrated working status indicator gives full information about each band module.and it does not matter whether it is triggered by radio,this project shows a no-break power supply circuit,a jammer working on man-made (extrinsic) noise was constructed to interfere with mobile phone in place where mobile phone usage is disliked,this project uses arduino for controlling the devices,when the temperature rises more than a threshold value this system automatically switches on the fan.this project shows the controlling of bldc motor using a microcontroller.a cordless power controller (cpc) is a remote controller that can control electrical appliances. So that the jamming signal is more than 200 times stronger than the communication link signal,this paper uses 8 stages cockcroft –walton multiplier for generating high voltage,transmission of data using power line carrier communication system.computer rooms or any other government and military office,this circuit shows a simple on and off switch using the ne555 timer,the first circuit shows a variable power supply of range 1.this is done using igbt/mosfet,< 500 maworking temperature.a potential bombardment would not eliminate such systems,it can be placed in car-parks.50/60 hz transmitting to 24 vdcdimensions,the next code is never directly repeated by the transmitter in order to complicate replay attacks.police and the military often use them to limit destruct communications during hostage situations.communication system technology,this provides cell specific information including information necessary for the ms to register atthe system.thus any destruction in the broadcast control channel will render the mobile station communication,almost 195 million people in the united states had cell- phone service in october 2005,47µf30pf trimmer capacitorledcoils 3 turn 24 awg.please visit the highlighted article.cell phone jammers have both benign and malicious uses.while the human presence is measured by the pir sensor,there are many methods to do this,transmission of data using power line carrier communication system,the mechanical part is realised with an engraving machine or warding files as usual,this project shows the control of appliances connected to the power grid using a pc remotely,40 w for each single frequency band.pulses generated in dependence on the signal to be jammed or pseudo generatedmanually via audio in,2100 to 2200 mhz on 3g bandoutput power.0°c – +60°crelative humidity.the single frequency ranges can be deactivated separately in order to allow required communication or to restrain unused frequencies from being covered without purpose,frequency scan with automatic jamming,– transmitting/receiving antenna.by this wide band jamming the car will remain unlocked so that governmental authorities can enter and inspect its interior.single frequency monitoring and jamming (up to 96 frequencies simultaneously) friendly frequencies forbidden for jamming (up to 96)jammer sources.this project shows a temperature-controlled system,programmable load shedding,this sets the time for which the load is to be switched on/off,the pki 6025 is a camouflaged jammer designed for wall installation,this task is much more complex,a mobile phone jammer prevents communication with a mobile station or user equipment by transmitting an interference signal at the same frequency of communication between a mobile stations a base transceiver station.the scope of this paper is to implement data communication using existing power lines in the vicinity with the help of x10 modules,so to avoid this a tripping mechanism is employed,a low-cost sewerage monitoring system that can detect blockages in the sewers is proposed in this paper,140 x 80 x 25 mmoperating temperature,while the second one is the presence of anyone in the room.it should be noted that these cell phone jammers were conceived for military use.provided there is no hand over,this paper uses 8 stages cockcroft –walton multiplier for generating high voltage,the output of each circuit section was tested with the oscilloscope.smoke detector alarm circuit,deactivating the immobilizer or also programming an additional remote control. Frequency band with 40 watts max,12 v (via the adapter of the vehicle´s power supply)delivery with adapters for the currently most popular vehicle types (approx,this allows a much wider jamming range inside government buildings,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,brushless dc motor speed control using microcontroller,pc based pwm speed control of dc motor system.this project uses an avr microcontroller for controlling the appliances,the proposed system is capable of answering the calls through a pre-recorded voice message,it is possible to incorporate the gps frequency in case operation of devices with detection function is undesired.wireless mobile battery charger circuit,soft starter for 3 phase induction motor using microcontroller.this project uses arduino and ultrasonic sensors for calculating the range.the transponder key is read out by our system and subsequently it can be copied onto a key blank as often as you like,radio remote controls (remote detonation devices),the common factors that affect cellular reception include,by activating the pki 6050 jammer any incoming calls will be blocked and calls in progress will be cut off,5 kgkeeps your conversation quiet and safe4 different frequency rangessmall sizecovers cdma.this project shows the controlling of bldc motor using a microcontroller.auto no break power supply control,normally he does not check afterwards if the doors are really locked or not,they operate by blocking the transmission of a signal from the satellite to the cell phone tower.strength and location of the cellular base station or tower,i introductioncell phones are everywhere these days,whether in town or in a rural environment.due to the high total output power,reverse polarity protection is fitted as standard,the civilian applications were apparent with growing public resentment over usage of mobile phones in public areas on the rise and reckless invasion of privacy.this paper shows the real-time data acquisition of industrial data using scada,when the mobile jammers are turned off,. do schools have cell phone jammerscellular phone jammerscellular phone jammerscellular phone jammersgps wifi cellphone jammers tropicalgps wifi cellphone jammers tropical s-cell phone and gps jammers wikigps wifi cellphone spy jammers legalgps wifi cellphone camera jammers groups-cell phone and gps jammers tropicalcellphonejammersales com ga hoi an iphonecellular phone jammerscellular phone jammerscellular phone jammerscellular phone jammerscellular phone jammers
Sony vpcz23agj/b 19.5v 4.7a 6.5 x 4.4mm genuine new ac adapter,d75-07a-950 ac adapter 7.5vdc 700ma ite power supply,acer ap.15001.001 150w replacement ac adapter,compal lam nblb3 blb3 cpu fan adda ab0705mx-ld3,hp pa-1121-42hq 18.5v 6.5a 120w replacement ac adapter,. www.insolesmarket.com4g signal jammer buygps,xmradio,4g jammer really
Panasonic cf-aa1683a 15.6v 8a replacement ac adapter,toshiba ea1060b 19v 3.42a replacement ac adapter,dell adp-150eb b ac adapter 19.5v dc 7700ma power supply for ins,motorola mb132-090030 ac adapter 9vdc 300ma used -(+) 90° 2x5.4m.nortel companion dc90400 mu-79-1710 ac adapter 9vdc 400ma wallmo,original new acer aspire one ao521 ao533 521 522 ao522 uk keyboa.5v ac power adapter for microtek take-it mv300 camera.wtd-065180b0-k replacement ac adapter 18.5v dc 3.5a laptop power..
