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Cover photo: Trimble Innovators Assemble In the second part of our receiver feature, top receiver manufacturers discuss what’s on the horizon for GNSS receivers: recent and upcoming innovations, combating spoofing and jamming, fusing GNSS with other sensors, and the impact of increasing accuracy both for professional surveyors and consumers. In January, we featured responses from NovAtel, Trimble, Unicore, Topcon, Hemisphere GNSS, CNC Navigation and Septentrio to questions about their recent and upcoming innovations in the design and manufacturing of GNSS receivers. We continue in this issue with responses to the same questions from Javad GNSS, Swift Navigation, Eos Positioning Systems, Tersus GNSS, TeleOrbit, Allystar Technology and NTLab. All GNSS receiver manufacturers agree that spoofing and intentional and unintentional jamming are serious challenges. Their approaches to dealing with these challenges differ, however, as they rely on different combinations of technologies on both their receivers (such as monitoring cycle slips and using analog-to-digital converters, correlators and notch filters) and their antennas (such as using array antennas), as well as the new Galileo authentication service. Photo: Tersus GNSS Many receiver manufacturers now routinely use optical, inertial and other sensors — which continue to drop in price and increase in performance — to supplement GNSS signals where they are degraded or denied, especially in the automotive market. Carrier phase positioning and correction services are increasingly improving the accuracy of survey stations and reducing their price. Meanwhile, submeter accuracy is spreading beyond surveying to other industries. Performance in challenging conditions also continues to improve, thanks largely to the increase in the number of GNSS constellations, available satellites and frequencies. (For a review of recent developments in antennas, see our companion article here.) On the consumer side, the introduction of multi-frequency GNSS receiver chips, the increased use of correction services, and, in a few countries, the deployment of thousands of additional base stations will continue to increase the location accuracy of cell phones and other consumer devices, enabling new applications. However, in these devices size and cost limitations make antenna performance particularly challenging. (See Part 1 here.) Javad GNSS Jamming and Spoofing. “We protect you against jammers and spoofers like no one else can,” said Javad Ashjaee, founder and CEO of Javad GNSS. “We use multiple techniques to detect spoofers, the most important being the use of digital signal processing to detect more than one peak. First, with 864 channels and about 130,000 Quick Acquisition Channels in our Triumph chip, we have resources to assign more than one channel to each satellite to find all signals that are transmitted with that GNSS PRN code. If we detect more than one reasonable and consistent correlation peak for any PRN code, we know that we are being spoofed and can then identify the spoofer signals and ignore the wrong peak.” An example of two peaks. (Chart: Javad GNSS) Ashjaee described additional techniques: The J-Shield filter blocks out-of-band interference. Sixteen 255th-order FIR anti-jam digital filters protect against static in-band interference, and 16 adaptive 80th-order digital filters protect against dynamic interference. Javad products measure the level of interference as a percentage of in-band noise above normal. The Triumph chip has a powerful spectrum analyzer. Each spectrum shows the power and the shape of the interfering signals and jammers. This is more powerful and more efficient than using a commercial spectrum analyzer to evaluate the environment. The chip also keeps a record of Automatic Gain Control, which is another indicator of external signals. A change in AGC can indicate interference. Deviation of SNR from the expected value is another important indicator of interference. “Usually there are over 100 signals available at any given time, and we need only four good signals to compute position. It is extremely unlikely that we can be spoofed without our knowledge.” Ashjaee concluded. “We will immediately recognize and take corrective actions.” Jamming and spoofing protection is available on all Javad GNSS receivers and OEM boards. Read more about Javad GNSS’s jamming and spoofing protection in the December 2019 issue. Sensor Fusion. “To support users in environments where GNSS RTK solutions are difficult or impossible to obtain,” Ashjaee said, “Javad GNSS has invented the J-Mate, which is a remotely controlled robotic EDM device and digital camera. GNSS RTK and optical can be seamlessly integrated using the J-Mate as the seventh RTK engine. Just set up a Triumph-3 on top of a J-Mate and a Triumph LS on top of a zebra rod, making the former pair the RTK base station and the latter pair the RTK rover.” Read more about Javad GNSS’s RTK and Optical United solution in the November 2019 issue. Swift Navigation Jamming and Spoofing. “Receivers have become more robust to intentional jamming by mimicking the jammers’ behavior to cancel it,” said Alex Pun, staff product manager for Swift. “Nevertheless, advanced jamming and spoofing mitigation often imply array antennas. A real evolution lies in considering these threats only in terms of the availability of the GNSS sensor, now part of a complete multi-sensor positioning engine such as Starling.” Sensor Fusion. IMUs, visual sensors and GNSS will aid each other in different types of environments and scenarios, explained Pun. “Sensors are becoming more affordable, and their performance increases with each new generation. Sensor fusion will be the glue that will bind them to provide a precise positioning solution.” Surveying. The combined use of carrier-phase positioning and correction services, such as Swift’s Skylark, will greatly improve accuracy and reduce the cost of survey stations, because they make their accuracy less dependent on the intrinsic performance of the receiver and the antenna, Pun said. “A global service eliminates the need for an individual base station.” Consumer Devices. “The introduction of dual-frequency GNSS receivers from chip manufacturers will help improve positioning in cell phones and other consumer devices,” Pun said. “These chips, coupled with a widely available correction service such as Skylark, will greatly improve their performance accuracy to sub-meter levels.” Other Challenges. Performance stability of the antenna and its characterization will become the main challenge to exploiting the new GNSS ASICs (application-specific integrated circuits) and correction services at their highest level of performance, Pun said. “A positioning engine can exploit this information to accelerate the convergence to the high-accuracy solution, and then improve its availability.” Eos Positioning Systems A surveyor uses the Arrow Gold receiver to map assets in Terrebonne, Quebec, Canada. (Photo: Eos Positioning) “The past three years have seen considerable innovations and trends in the GNSS industry,” said Jean-Yves Lauture, CTO of Eos Positioning. “Receivers are becoming increasingly affordable and the adoption of higher-accuracy (submeter, centimeter) positioning by other industries, outside of conventional surveying, is growing. Considering the now four usable GNSS constellations and the aggressive launches of Galileo and BeiDou satellites, the number of available satellites and the list of frequencies they use has considerably increased. “Although accuracy itself is not really improving, performance is — particularly in tougher conditions. It’s not uncommon for customers to use 30 to 35 satellites out of more than 40 in view using an Arrow Series GNSS receiver. The numbers are even higher in the Pacific regions, thanks to geostationary BeiDou satellites. This is, by far, more than double the number of satellites available with just GPS and GLONASS.” Consumer Devices. “It will be challenging for smartphones and consumer devices to achieve survey-grade accuracy in the next few years. They face certain limitations. For instance, there is a cost and physical size associated with using a high-end GNSS antenna with a minimum of ground plane to achieve these levels of accuracy. The Arrow Gold RTK GNSS receiver. (Photo: Eos Positioning) “Also, it is unlikely that the manufacturers of consumer devices will invest in developing the advanced algorithms needed for a high level of constant accuracy and performance. In order to fit into a smartphone, consumer-grade GNSS chipset manufacturers must drop the use of many available signals and frequencies to keep both size and power consumption to a minimum.”     Allystar Technology Photo: Allystar Jamming and Spoofing. The GNSS chip in Allystar’s TAU1301 module supports eight adaptive notch filters to reduce the effects of GNSS jamming, explained Shi-Xian Yang, senior principal engineer in the company’s Baseband Algorithm Department. “It significantly improves the performance of GNSS tracking measurements, even in the presence of strong and fast-varying jamming signals.” Sensor Fusion. The TAU1310 integrates a six-axis micro-electromechanical system (MEMS) gyro, which makes its affordable for the mass market, Yang said. The Lenovo Z6. (Photo: Lenovo) Consumer Devices. In its Z6 smartphone, Lenovo has taken advantage of the great improvement in multipath mitigation provided by the L5 signal’s higher chip rate and the output of high quality raw data via the TAU1302’s HD8040 GNSS chipset to improve the accuracy experience in the consumer market, Yang explained. Additionally, he pointed out, cell phones and other consumer devices now enable developers to access the raw sensor data from such sensors as accelerometers and barometers to input into their fusion algorithms. Other Challenges. In the future, the TAU1310 could also support the L6 signal for PPP-RTK application.   NTLab NTLab anti-jamming GNSS receiver. (Photo: NTLab) Jamming and Spoofing. The problem of jamming and spoofing worries customers, according to Konstantin Yuriev, lead GNSS engineer at NTLab. The combination of anti-jam and anti-spoofing is in greater demand because the anti-jam feature alone is becoming insufficient. Yuriev cited the European Union’s new requirements for the European Railway Traffic Management System (ERTMS), which makes anti-spoofing mandatory. The key issue today is “the solution to the problem of reducing the size and cost of anti-jam receivers, so that they become available to consumers on the civilian market. The key technology for this will be increasing the degree of integration of the component base, first creating a chipset for solving anti-jamming and anti-spoofing tasks, and then moving on to a single-chip solution. We have created a chipset and are ready to start work on the further integration into a single chip.” Sensor Fusion. The traditional task of integrating data from a GPS antenna and a MEMS sensor has been solved, Yuriev said, with many such solutions on the market. One task is to track the antenna’s tilt. “The antenna, GNSS receiver, and MEMS sensors should be located very closely to each other — if possible, on a single small board,” Yuriev said. “Here, again, the solution is to increase the degree of integration, up to placing the baseband processor on the same chip with the digital CMOS circuitry of the MEMS sensor.” Another application of MEMS is serving as the core of an inertial navigation system (INS), providing an auxiliary subsystem for detecting the presence of spoofing. “This is more of an algorithmic task,” Yuriev said, “because traditional coupling using recursive filters is not enough. It is necessary to ensure the independence of the INS subsystem from the GNSS solution, or their intelligent mutual cross-control.” Surveying. A major part of the cost of a survey-grade device, Yuriev pointed out, is for additional services, know-how, and other added values. There is market demand for a business model in which device price could go down while maintaining the main values for the customer. “This could be achieved if end-users tightly cooperate with hardware manufacturers, skipping third-party integrators. Alternatively, multiple third parties could compete, keeping the cost of the software low. One of the technical solutions for this is to provide software application programming interfaces (APIs) that will allow multiple third parties to offer application-level software for the same hardware. We call it the ‘open platform’ approach. One of our products implements this strategy.” Other Challenges. Despite some skeptics, Yuriev argued, new GNSS systems have been successful. “A good example is IRNSS (NavIC), with India’s population of 1.3 billion forming a potential market. Moreover, according to our studies, good coverage is provided not only in India’s territory. We are working on creating an economically affordable solution with support for the NavIC S-band. A new chip-scale packaged RFIC (radio-frequency integrated circuit) should minimize the size, consumption, and price of NavIC-oriented modules, while maintaining all the advantages of the S-band signal in areas close to the equator. This is our solution to the problem.” TeleOrbit GOOSE platform. (Photo: Fraunhofer IIS) GNSS Receiver Development Platform. The company’s GOOSE platform is a field-programmable gate array (FPGA)-based GNSS receiver, developed by Fraunhofer IIS, making it flexible in processing new or proprietary signals, according to Katrin Dietmayer, software development engineer at Fraunhofer IIS. “It comprises 60 hardware channels in real time and provides an open software interface for customer applications,” she explained. Jamming and Spoofing. “It grants deep access to the hardware interface, down to, for example, the correlation values. Additionally, anti-jamming functions (such as notch-filter or pulse-blanker) can be added and anti-spoofing algorithms are already implemented. Thanks to the open architecture, our customers can also implement these or other algorithms.” Sensor Fusion. Vector tracking in real time is already implemented on code base. Deep coupling with INS/IMU multi-sensor fusion — for example, with an odometer, ultra wideband or 5G — are possible and under development, Dietmayer said. Surveying. TeleOrbit provides GNSS-RTK using RTKLIB. “The implemented Open GNSS Receiver Protocol (OGRP) is fully documented with a parsing tool using CONVBIN from RTKLIB as RINEX converter,” Dietmayer explained. Consumer Devices. GOOSE is also used as the reference receiver in the ESA project Receiver Technologies for Future Mass Market (RT4FMM) devices. The project validates state-of-the-art dual-frequency mass-market receivers based on Broadcom BCM47755 and u-blox F9 and compares their performance against GOOSE E5AltBOC processing. Other Challenges. GOOSE already processes the new Galileo OS-NMA (Open Service – Navigation Messages Authentication), while implementing the new Galileo High Accuracy Service (HAS) is on the roadmap. “The combination of these new features will result in a robust and reliable high-accuracy position,” Dietmayer said. “For system testing, the intermediate frequency signals can be recorded, processed and replayed with the platform.” Tersus GNSS The Oscar. (Photo: Tersus GNSS) Jamming and Spoofing. Xiaohua Wen, founder and CEO, said his company has done much research and testing on jamming and spoofing. “We already implemented a high dynamic analog-to-digital converter to overcome jamming. To mitigate spoofing, we think that internet of things (IoT) devices can leverage cloud services. Alternatively, the new Galileo authentication service may serve the same function.” Sensor Fusion. Tersus GNSS makes an INS product, and its Oscar receiver contains an inertial measurement unit (IMU). “The sensor fusion hub is a very hot topic in the automobile industry,” Wen said. “We are quickly adapting our Oscar and INS product line for the creation of high definition maps and for indoor navigation. We think it’s still the major pain point for a crowded country such as China.” Surveying. As has been the case in many other industries, Wen said, the widespread adoption of GNSS technology and the increase in the number of players in the field has led to a drop in prices. “Tersus’ David and Oscar models are low cost but still perform well compared with Tier 1 players for professional survey machines using our own OEM GNSS board,” he said. Consumer Devices. The fact that a few vendors are providing dual-frequency chipsets in smartphones opens the door for consumer-grade sub-decimeter applications, Wen said. “But we think the antenna could be a big challenge for the small devices.” Other Challenges. “Mobile carriers are building thousands of base stations,” Wen said. “For example, Softbank in Japan completed 3,300 stations this year. China Mobile just issued a bid for a phase one project for 4,400 stations. We think mobile phone innovations for the new high-accuracy application may have some impacts in the coming years. We have been actively looking at some new GIS (geographic information systems) applications based on our in-house Nuwa platform.”

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Ah-v420u ac adapter 12vdc 3a power supply used -(+) 2.5x5.5mm,blueant ssc-5w-05 050050 ac adapter 5v 500ma used usb switching.d-link dir-505a1 ac adapter used shareport mobile companion powe,atc-frost fps2024 ac adapter 24vac 20va used plug in power suppl,psc 7-0564 pos 4 station battery charger powerscan rf datalogic,sceptre ad1805b 5vdc 3.7a used 3pin mini din ite power supply,cui inc epa-201d-12 ac adapter 12vdc 1.66a used 8 pin mini din c.computer wise dv-1250 ac adapter 12v dc 500ma power supplycond,hp adp-12hb ac adapter 12vdc 1a used -(+) 0.8x3.4 x 5.4 x 11mm 9,eng 3a-302da18 ac adapter 20vdc 1.5a new 2.5x5.5mm -(+) 100-240v.chateau tc50c ac-converter 110vac to 220vac adapter 220 240v for.and it does not matter whether it is triggered by radio.meanwell gs220a24-r7b ac adapter 24vdc 9.2a 221w 4pin +(::)-10mm,listen to music from jammerbag ’s library (36.hitron hes49-12040 ac adapter 12vdc 4a (+)- 2.5x5.5mm 100-240vac,nokia ac-5e ac adapter cell phone charger 5.0v 800ma euorope ver,linksys mt10-1050200-a1 ac adapter 5v 2a switching power supply,as many engineering students are searching for the best electrical projects from the 2nd year and 3rd year.zte stc-a22o50u5-c ac adapter 5vdc 700ma used usb port plug-in d,qualcomm txaca031 ac adapter 4.1vdc 550ma used kyocera cell phon.kingpro kad-01050101 ac adapter 5v 2a switching power supply,shenzhen rd1200500-c55-8mg ac adapter 12vdc 1a used -(+) 2x5.5x9.nalin nld200120t1 ac adapter 12vdc 2a used -(+) 2x5.5mm round ba.insignia e-awb135-090a ac adapter 9v 1.5a switching power supply,dsc-31fl us 52050 ac adapter +5.2vdc 0.5a power supply,mobile jammer india deals in portable mobile jammer,pace fa-0512000su ac adapter 5.1vdc 2a used -(+) 1.5x4x9mm round.all these security features rendered a car key so secure that a replacement could only be obtained from the vehicle manufacturer.delphi sa10115 xm satellite radio dock cradle charger used 5vdc,ts-13w24v ac adapter 24vdc 0.541a used 2pin female class 2 power,power supply unit was used to supply regulated and variable power to the circuitry during testing,dell ad-4214n ac adapter 14vdc 3a power supply,fsp group inc fsp180-aaan1 ac adapter 24vdc 7.5a loto power supp,chi ch-1265 ac adapter 12v 6.5a lcd monitor power supply,sony battery charger bc-trm 8.4v dc 0.3a 2-409-913-01 digital ca,edac premium power pa2444u ac adapter 13v dc 4a -(+)- 3x6.5mm 10.acbel api4ad20 ac adapter 15v dc 5a switching power supply adapt.

Ktec ksaa0500080w1eu ac adapter 5vdc 0.8a used -(+)- 1.5 x 3.5 x.curtis dv-04550s 4.5vdc 500ma used -(+) 0.9x3.4mm straight round.depending on the already available security systems,a mobile phone might evade jamming due to the following reason,ad1250-7sa ac adapter 12vdc 500ma -(+) 2.3x5.5mm 18w charger120.that is it continuously supplies power to the load through different sources like mains or inverter or generator,jvc ap v14u ac adapter 11vdc 1a used flat proprietery pin digit.here is the project showing radar that can detect the range of an object,jvc aa-v68u ac adapter 7.2v dc 0.77a 6.3v 1.8a charger aa-v68 or,motorola htn9014c 120v standard charger only no adapter included,hitachi hmx45adpt ac adapter 19v dc 45w used 2.2 x 5.4 x 12.3 mm.foreen industries ltd. 28-d09-100 ac adapter 9v dc 100ma used 2.black & decker mod 4 ac adapter dc 6v used power supply 120v,kinetronics sc102ta2400f01 ac adapter 24vdc 0.75a used 6pin 9mm,hp compaq pa-1900-18h2 ac adapter 19vdc 4.74a used zt3000 pavili.ault 5305-712-413a09 ac adapter 12v 5vdc 0.13a 0.5a power supply,whose sole purpose is to inhibit the use of mobiles,d-link cf15105-b ac adapter 5vdc 2.5a -(+) 2x5.5mm 90° 120vac a,liteon pa-1900-08hn ac adapter 19vdc 4.74a 90w used,brushless dc motor speed control using microcontroller,delta adp-90sb bb ac adapter 19vdc 4.74a -(+) 2.5x5.5mm used 100,sjs sjs-060180 ac adapter 6vdc 180ma used direct wall mount plug,epson a391uc ac adapter 13.5vdc 1.5a used -(+) 3.3x5mm 90° right,ibm pa-1121-071 ac adapter 16vdc 7.5a used 4-pin female 02k7086,nexxtech 2731411 reverse voltage converter foriegn 40w 240v ac,dell la65ns2-00 65w ac adapter 19.5v 3.34a pa-1650-02dw laptop l.sears craftsman 974775-001 battery charger 12vdc 1.8a 9.6v used,2 w output powerwifi 2400 – 2485 mhz.motorola ssw-0864 cellphone charger ac adapter 5vdc 550ma used,delta adp-90sb bd ac adapter 20vdc 4.5a used -(+)- 2.5x5.5x11mm,hp pa-1121-12r ac adapter 18.5vdc 6.5a used 2.5 x 5.5 x 12mm.hp 0950-4488 ac adapter 31v dc 2420ma used 2x5mm -(+)- ite power.ibm 02k7006 ac adapter 16vdc 3.36a used -(+)- 2.5x5.5mm 100-240v.larger areas or elongated sites will be covered by multiple devices.ad3230 ac adapter 5vdc 3a used 1.7x3.4x9.3mm straight round,sharp ea-r1jv ac adapter 19vdc 3.16a -(+) used 2.8x5.4x9.7mm 90,this multi-carrier solution offers up to ….

Casio phone mate m/n-90 ac adapter 12vdc 200ma 6w white colour,cui dve dsa-0151f-12 a ac adapter 12v dc 1.5a 4pin mini din psu,mastercraft 5104-18-2(uc) 23v 600ma power supply,ua075020e ac adapter 7.5vac 200ma used 1.4 x 3.3 x 8 mm 90,kvh’s new geo-fog 3d inertial navigation system (ins) continuously provides extremely accurate measurements that keep applications operating in challenging conditions.eng 3a-161wp05 ac adapter 5vdc 2.6a -(+) 2.5x5.5mm 100vac switch.lind pa1540-201 g automobile power adapter15v 4.0a used 12-16v.computer products cl40-76081 ac adapter 12vdc 0.35a 6pin power s,creative mae180080ua0 ac adapter 18vac 800ma power supply.lac-cp19v 120w ac adapter 19v 6.3a replacement power supply comp,the circuit shown here gives an early warning if the brake of the vehicle fails,sony acp-88 ac pack 8.5v 1a vtr 1.2a batt power adapter battery,a mobile jammer circuit or a cell phone jammer circuit is an instrument or device that can prevent the reception of 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,now type use wifi/wifi_ jammer (as shown in below image),nec op-520-4701 ac adapter 13v 4.1a ultralite versa laptop power,black & decker 371415-11 ac adapter 13vdc 260ma used -(+) 2x5.5m,sos or searching for service and all phones within the effective radius are silenced.canon mg1-3607 ac adapter 16v 1.8a power supply.toshiba adp-15hh ac adapter 5vdc 3a - (+) - new switching power.jammerssl is a uk professional jammers store,fifthlight flt-hprs-dali used 120v~347vac 20a dali relay 10502,here is the circuit showing a smoke detector alarm,mastercraft 223-m91 battery charger 12-18vdcni-cd nickel cadmi.65w-dl04 ac adapter 19.5vdc 3.34a da-pa12 dell laptop power.gretag macbeth 36.57.66 ac adapter 15vdc 0.8a -(+) 2x6mm 115-230,coleman cs-1203500 ac adapter 12vdc 3.5a used -(+) 2x5.5x10mm ro.ault p48480250a01rg ethernet injector power supply 48vdc 250ma.computer concepts 3comc0001 dual voltage power supply bare pcb 1,belkin utc001-b usb power adapter 5vdc 550ma charger power suppl.ac adapter ea11203b power supply 19vdc 6a 120w power supply h19v.the same model theme as the weboost,a total of 160 w is available for covering each frequency between 800 and 2200 mhz in steps of max,channel well cap012121 ac adapter 12vdc 1a used 1.3x3.6x7.3mm.dsa-0151f-12 ac adapter 12vdc 1.5a -(+) 2x5.5mm used 90° 100-240.lei nu30-4120250-i3 ac adapter 12vdc 2.5a used 2x5.5mm 30w motor,with a single frequency switch button.

Premium power pa3083u-1aca ac adapter 15v dc 5a power supply,apple a1070 w008a130 ac adapter 13vdc 0.62a usb 100-240vac power.cal-comp r1613 ac dc adapter 30v 400ma power supply.samsung atads30jbs ac adapter 4.75vdc 0.55a used cell phone trav.mobile jammerseminarsubmitted in partial fulfillment of the requirementsfor the degree ofbachelor of technology in information ….jvc aa-v15u ac power adapter 8.5v 1.3a 23w battery charger,usb 2.0 cm102 car charger adapter 5v 700ma new for ipod iphone m,from analysis of the frequency range via useful signal analysis.select and click on a section title to view that jammer flipbook download the pdf section from within the flipbook panel <.jvc aa-v70u camcorder dual battery charger used 3.6vdc 1.3a 6vdc,none reports/minutes 7 - 15 1.leitch tr70a15 205a65+pse ac adapter 15vdc 4.6a 6pin power suppl,imex 9392 ac adapter 24vdc 65ma used 2 x 5.5 x 9.5mm.powerup g54-41244 universal notebook ac adapter 90w 20v 24v 4.5a.lighton pb-1200-1m01 ac adapter 5v 4a switching ac power supply,apple m7332 ac adapter 24vdc 1.875a 2.5mm 100-240vac 45w ibook g,sony bc-csgc 4.2vdc 0.25a battery charger used c-2319-445-1 26-5.this project shows a temperature-controlled system.csd0900300u-22 ac adapter 9vdc 300ma used 2 x 5.5 x 12mm,coming data cp1230 ac adapter 12vdc 3a used -(+) 2x5.5mm round b,soft starter for 3 phase induction motor using microcontroller.car charger 2x5.5x10.8mm round barrel ac adapter.upon activating mobile jammers.aps ad-740u-1138 ac adapter 13.8vdc 2.8a used -(+)- 2.5x5.5mm po.briefs and team apparel with our online design studio,i have a gaming pc with windows 10 and my wifi adapter connects to my wifi when it wants and when it doesnt want it just disconnect me and remove the wifi.ault mw153kb1203f01 ac adapter 12vdc 3.4a -(+) used 2.5x5.5 100-.communication jamming devices were first developed and used by military.compaq 2824 series auto adapter 18.5v 2.2a 30w power supply,dell pa-1131-02d2 ac adapter 19.5v 6.7a 130w used 4.9 x 7.4 x 12,we were walking at the beach and had to hide and cover our children,the operating range does not present the same problem as in high mountains,2018 by electronics projects hub.fujifilm bc-60 battery charger 4.2vdc 630ma used 100-240v~50/60h,kyocera txtvl0c01 ac adapter 4.5v 1.5a travel phone charger 2235,acbel ad9014 ac adapter 19vdc 3.42a used -(+)- 1.8x4.8x10mm,dell ha65ns5-00 19.5v 3.34ma 65w ac adapter 4.8x7.3mm used.

Toshiba pa2440u ac adapter 15vdc 2a laptop power supply.dynamic instrument 02f0001 ac adapter 4.2vdc 600ma 2.5va nl 6vdc,4312a ac adapter 3.1vdc 300ma used -(+) 0.5x0.7x4.6mm round barr.panasonic vsk0697 video camera battery charger 9.3vdc 1.2a digit,compaq series pp2032 ac adapter 18.5vdc 4.5a 45w used 4pin femal.cc-hit333 ac adapter 120v 60hz 20w class 2 battery charger.proxim 481210003co ac adapter 12vdc 1a -(+) 2x5.5mm 90° 120vac w,centrios ku41-3-350d ac adapter 3v 350ma 6w class 2 power supply.nec adp52 ac adapter 19vdc 2.4a 3pin new 100-240vac genuine pow,sony pcga-ac19v ac adapter 19.5vdc 3.3a notebook power supply,acbel api3ad14 19vdc 6.3a used -(+)- 2.5x5.5mm straight round,frequency scan with automatic jamming,delta adp-65jh db ac adapter 19v 3.42a acer travelmate laptop po.ancon 411503oo3ct ac adapter 15vdc 300ma used -(+) rf antenna co,ibm pscv 360107a ac adapter 24vdc 1.5a used 4pin 9mm mini din 10,35-15-150 c ac adapter 15vdc 150ma used -(+) 2x7xmm round barrel.a mobile device to help immobilize,sharp uadp-0220cezz ac adapter 13vdc 4.2a 10pin square lcd tv po,320 x 680 x 320 mmbroadband jamming system 10 mhz to 1,elpac power mi2824 ac adapter 24vdc 1.17a used 2.5x5.5x9.4mm rou,yardworks 24990 ac adapter 24vdc 1.8a battery charger used power,kross st-a-090-003uabt ac adapter 15v 16v 18v (18.5v) 19v(19.5,hp compaq ppp009h ac adapter 18.5vdc 3.5a -(+) 1.7x4.8 100-240va,now we are providing the list of the top electrical mini project ideas on this page.corex 48-7.5-1200d ac adapter 7.5v dc 1200ma power supply,the continuity function of the multi meter was used to test conduction paths.rocket fish rf-bslac ac adapter 15-20vdc 5a used 5.5x8mm round b,viasys healthcare 18274-001 ac adapter 17.2vdc 1.5a -(+) 2.5x5.5.altec lansing s024eu1300180 ac adapter 13vdc 1800ma -(+) 2x5.5mm,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,35a-d06-500 ac adapter 6vdc 500ma 3va used 1 x 2.4 x 9.4mm,apple a1172 ac adapter 18vdc 4.6a 16vdc 3.6a used 5 pin magnetic,hp hp-ok65b13 ac adapter 18.5vdc 3.5a used -(+) 1.5x4.7x11mm rou,creative sy-12160a-bs ac adapter 11.5v 1600ma used 2x5.5mm uk pl.panasonic ag-b6hp ac adapter 12vdc 1.8a used power supply.and the meadow lake citizens on patrol program are dedicated to the reduction of crime and vandalism.toshiba pa3378e-1aca ac adapter 15vdc 5a used 3 x 6.5 x 9.7 mm s.

Cpc can be connected to the telephone lines and appliances can be controlled easily,viasat ad8530n3l ac adapter 30vdc 2.7a -(+) 2.5x5.5mm charger fo.ibm 02k6746 ac adapter 16vdc 4.5a -(+) 2.5x5.5mm 100-240vac used,the pki 6025 looks like a wall loudspeaker and is therefore well camouflaged,hp hstn-f02x 5v dc 2a battery charger ipaq rz1700 rx.canon k30216 ac adapter 24v 0.5a battery charger,ibm 35g4796 thinkpad ac dc adapter 20v dc 700 series laptop pow,liteon pa-1600-05 ac adapter 19v dc 3.16a 60w averatec adp68.this project shows the controlling of bldc motor using a microcontroller,condor 48a-9-1800 ac adapter 9vac 1.8a ~(~) 120vac 1800ma class,fineness power spp34-12.0-2500 ac adapter 12vdc 2500ma used 4 pi,replacement seb100p2-15.0 ac adapter 15vdc 8a 4pin used pa3507u-.dell fa65ns0-00 ac adapter 19.5vdc 3.34 used 5.2 x 7.3 x 13 mm s,olympus bu-300 ni-mh battery charger used 1.2vdc 240ma camedia x.meadow lake tornado or high winds or whatever,i have designed two mobile jammer circuits.dc90300a ac adapter dc 9v 300ma 6wclass 2 power transformer.li shin 0225a2040 ac adapter 20vdc 2a -(+) 2.5x5.5mm laptop powe,3m 725 wrist strap monitor used 69wl inspection equipment,our pki 6085 should be used when absolute confidentiality of conferences or other meetings has to be guaranteed,ibm 07h0629 ac adapter 10vdc 1a used -(+)- 2 x 5 x 10 mm round b.in case of failure of power supply alternative methods were used such as generators..

2021/06/12 by 2Q1_Yt1Fa@aol.com

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