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By Tommaso Panicciari, Mohamed Ali Soliman and Grégory Moura All images provided by the authors A real-time system combining a simulator and a GNSS propagation model reproduces an authentic multipath environment. The propagation model relies on a 3D-model reconstruction of the urban environment, which generates a multipath signature strictly dependent on the location of the receiver’s antenna. This yields important results for a moving vehicle, which may be affected by very different multipath conditions depending on trajectory and location. Positioning and navigation can be degraded in urban environments by multipath, and the error can increase considerably if not properly compensated. In situations where the line-of-sight (LOS) is obscured by surrounded buildings, the receiver may still be able to navigate by using the non-line-of-sight (NLOS) signal, which originates from single or multiple reflections/diffractions of the GNSS signal. The use of 3D models has been one of the preferred solutions to recreate the multipath environment as seen by a GNSS device. This solution brings the capability to generate a multipath signature that is representative of the position of the antenna in a specific time and space. However, this solution comes with a certain degree of complexity. In fact, an accurate 3D model is required to simulate the obscuration of the GNSS signal, and a good propagation model is needed to generate phenomena like reflection and diffraction. Figure 1. Example of propagated signal simulation. (Image: Tommaso Panicciari, Mohamed Ali Soliman and Grégory Moura))\ 3D models have become more accurate and widely available and are mainly used to predict the satellite availability in specific locations, for example in evaluating the signal availability in urban canyon, and for both reflection and diffraction. Other uses of 3D models are as an aiding tool to assist navigation, sometimes together with an INS solution. In this article, we present a novel real-time system capable of simulating realistic multipath in different environments. The system can simulate multiple GNSS constellations and is comprised of a GNSS simulator interfaced to a propagation model. The system can create a whole range of signals, effects, error models and trajectories in a real-time closed loop. The propagation model controls the simulation of multipath from the interaction of the GNSS signal with the 3D scene and objects. This article describes a novel real-time system for the simulation of realistic multipath in different environments and compares simulated and field-test data. The comparison is based on signal availability, horizontal error, carrier-to-noise (C/N0), pseudorange and Doppler residuals. RAY-TRACING WITH 3D MODELING The model simulates the propagation of GNSS signals in constrained environments, considering obscurations and multipath. It uses a proprietary ray-tracing kernel (based on bounding volume hierarchy techniques using processing unit [GPU] resources) coupled with geometrical optics and uniform theory of diffraction to compute the interaction between the signal and the local environment. The computation uses as main input a synthetic environment (that is, geometrical and physical modeling of a real or realistic environment) to assess the impact of obscurations related to signal availability issues and multipath (the cause of fading effects and performance problems). The objective of ray-tracing is to find all the possible paths from the observer to the source of the signal considering a limited number of interactions per emitted rays. A ray-tracer (or ray-tracing algorithm) uses a primary grid to cast primary rays. Then, it iteratively computes the possible interactions between these rays and the virtual scene (often defined using triangles). If those interactions exist (if they comply with the law of physics) and if the number of interactions to reach the emitter is below the maximum number of interactions set by the user, then a ray (or multipath) is created. This is a deterministic method that can be used to calculate the obscuration due to the local environment (and therefore detect the signal availability) and the geometrical characteristic of the computed path. Combined with physics modeling, path attributes such as received power, delay, Doppler, and phase are also provided. The main characteristics of ray-tracing techniques to model GNSS propagation are: All the signals arriving at the receiver can be model-based on the virtual environment. As it is a deterministic method, the more realistic the environment modeling, the more compliant with reality the results. Moreover, the simulation results are repeatable. The specular multipath can be displayed in 3D, and the attributes (for example, receiver power, phase, polarization, Doppler, geometry of the ray) are known. For example, this is relevant when the effect and signature of the environment on the propagation signal need to be studied and understood. Nonetheless, ray-tracing techniques must account for three major difficulties: They are time-consuming algorithms. Indeed, depending on the complexity of the scene (defined in terms of the number of triangles), a combinatorial problem to find the possible multipaths reaching the receiver makes the ray-tracer very resource-demanding. That is the reason why the most difficult task to achieve during the coding of a real-time ray-tracing algorithm is to develop acceleration techniques to quicken the computation process. Several solutions exist to either improve the intersection determination (for instance, based on spatial hierarchies such as bounding volume hierarchy [BVH] techniques), or to decrease the number of cast rays (often based on adaptive sampling techniques), or even to replace rays with beams or cones. Moreover, it is possible today to use the resources of graphic boards to accelerate the computation. Indeed, as ray-tracing can be coded by a large number of primary functions that can be treated simultaneously, it can be easily ported into GPU. Their accuracy depends on the resolution of the primary grid. Details and therefore rays may be missed if the 3D scene is made of small details. This issue is called aliasing. Aliasing artefacts are raised for instance in parts of the scene with abrupt changes (such as edges) or in complex areas with lots of constituent objects. Solutions (or antialiasing techniques) exist to overcome this issue such as adaptive or stochastic samplings. When it is combined with geometrical optics, these algorithms only compute the specular rays. Even if some techniques exist to model the scattering signals, only physical optics can render the global signal with high fidelity. MULTIPATH SIMULATION SYSTEM The proposed system can model two of the main propagation issues encountered in urban environments, such as obscuration (which leads to limitations in signal availability) and multipath (which generates interference that causes fading of the signal and positioning errors). To model realistically such a complex phenomenon, the system uses a GPU ray-tracing algorithm combined with geometrical optics and uniform theory of diffractions. The ray-tracing algorithm relies on 3D-model reconstructions of the urban environment. The computed obscuration and multipath effects are then used to generate signal corrections (in terms of power, delay and Doppler variation) to be used in the GNSS simulator, which generates the carrier, code and navigation messages for different GNSS constellations into a single RF output. Some of the advantages of this system is its ability to run in real time, and to visually show all the reflections/diffractions of the GNSS signals that cause multipath interference. Figure 2 shows the diagram of the system set up in conductive mode. The system includes a SE-NAV PC controller, simulator software suite controller, GNSS simulator and device under test (DUT). A different mode is also available called over the air (OTA). This mode uses an anechoic chamber and a set of antennas distributed uniformly to generate the RF signal including the multipath. The DUT can then be placed at the center of the chamber and will be able to receive LOS and NLOS signals from different angles of arrival. Figure 2. System diagram that shows propagation simulator controller (top), the GNSS simulator (bottom) and the device under test connected to the RF output of the simulator. (Image: Tommaso Panicciari, Mohamed Ali Soliman and Grégory Moura) The GNSS simulator software suite is used to generate and control the generation of the satellite signals (including multipath) at RF, whilst the propagation simulator is used to calculate the propagation information (delay, Doppler and attenuation) of the reflected signals through a 3D urban model. The propagation software is interfaced with GNSS simulator software by means of a package of remote-control facilities that greatly enhances the flexibility of the propagation simulator. Those commands can be sent and received through the transmission control protocol/use datagram protocol (TCP/UDP) with different data streaming rates (10 Hz was used for this article). It is also important to point out that the propagation simulator computes all the possible multipath signal generated by the 3D model given the position of the satellites and receiver. However, the physical limitation of the number of channels in the simulator causes the rejection of some rays. This rejection or filtering process can be done according to power (used in this article) or delay. EXPERIMENT SET-UP A set of different field-test campaigns where carried out in August 2016. Each campaign aimed to evaluate the ability of the system to assess the performances of a GNSS receiver using simulated signals in urban environments. Figure 3 shows the trajectory (blue line) used for the experiment in an urban environment — San Jose, California — with a static (a) and dynamic (b) scenario. Figure 3. A set of three measurement campaigns where carried out during Aug. 9–10, 2016: a) urban environment with static antenna; b) urban environment with dynamic antenna. (Image: Tommaso Panicciari, Mohamed Ali Soliman and Grégory Moura) Figure 4 shows the 3D scene used to replicate the San Jose urban environment. The buildings in close proximity of the antenna (green area in Figure 4b) contain details like material, 3D facade and windows. In contrast, the buildings far from the antenna were only corrected for height, and the material was modeled as concrete only. Figure 4. The San Jose model contained most of the details around the receiver antenna (b), with only height corrected for buildings far from the antenna (c). (Image: Tommaso Panicciari, Mohamed Ali Soliman and Grégory Moura) An exception was made for one building in San Jose because its complex architecture was believed to contribute to more reflected rays than would a more simplistic box (concrete) model (Figure 5). Figure 5. Improvement (right) in one San Jose building because its complex architecture was believed to generate more reflections than the more simplistic box model (left). (Image: Tommaso Panicciari, Mohamed Ali Soliman and Grégory Moura) EXPERIMENT RESULTS A direct comparison of C/N0 power, pseudorange residual, and Doppler residual was performed between the field test and simulation. San Jose Static Results. Figure 6 shows the results obtained from the San Jose static scenario for satellites PRN02 and PRN06: C/N0 ratio, pseudorange residual and Doppler residual for field test (blue line) and simulation (red line). Although the simulation sometimes creates deeper fading than in the field test, a first comparison indicates a good correlation of simulated data with field-test data. Figure 6. Carrier-to-noise ratio (top), pseudorange residual (middle) and Doppler residual (bottom) for PRN 02 (left column) and PRN 06 (right column). (Image: Tommaso Panicciari, Mohamed Ali Soliman and Grégory Moura) The signature of the multipath caused by this urban environment is visibly captured in the simulation. More interestingly, the pseudorange residuals and, to a lesser extent, Doppler residuals also indicate that the model is replicating the dynamics of the multipath environment in close correlation with the field test. Figure 7 shows the C/N0 obtained from the field data (blue), and simulated data (red) with only obscuration (a) and with obscuration and multipath (b) for the static scenario. It can be noticed that the receiver can still track PRN02 without the LOS, therefore, relying on just the NLOS signal. This can be clearly seen in Figure 7a where a sudden drop in power is associated to an obscuration of the same satellite (based on our 3D urban model). Figure 7b shows the C/N0 obtained from the simulation (red line) when both obscuration and multipath were enabled. In this case the receiver could track the satellite even in the case of only NLOS as in the field test. Figure 7. Carrier-to-noise ratio for satellite PRN02 with only obscuration (a) and with multipath (b). (Image: Tommaso Panicciari, Mohamed Ali Soliman and Grégory Moura) The positioning error for the San Jose static scenario is shown in Figure  8a. The simulation and field-test data have a comparable error. The error is relatively big at the beginning of the simulation and decreases after time 20.6. At the time 22.3, a moderate increase in the positioning error is visible in the field data until the end of the test. The simulation also shows a similar trend in this last part of the test, but tends to generate a higher positioning error. The satellite availability is shown in Figure 8b for both simulated (red) and field test (blue). The availability of the satellites generated with simulated data is in close relationship with the field data. However, some satellites could not be tracked in the simulation. Figure 8. a) positioning error for field-test (blue) and simulation (red); b) satellite availability for field data (blue) and simulation (red). (Image: Tommaso Panicciari, Mohamed Ali Soliman and Grégory Moura) The importance of the accuracy of the 3D scene is evident in this example. In fact, we noticed that one of the buildings that was simulated as a simple concrete box was more complex in the real environment. Therefore, we applied some modifications to scene, as in Figure 9. Figure 9. 3D scene improvement. (Image: Tommaso Panicciari, Mohamed Ali Soliman and Grégory Moura) After those changes, a general improvement in the results was visible, but most importantly, the missing satellites could finally be tracked by the receiver (Figure 10). Figure 10. Satellite availability for field data (blue) and simulation after scene improvement. (Image: Tommaso Panicciari, Mohamed Ali Soliman and Grégory Moura) SAN JOSE DYNAMIC TEST RESULTS Similar results were obtained with the dynamic test in San Jose. Figure 11 shows the results obtained for satellites PRN12 and PRN24. The walking trajectory included two points where the antenna was stopped because of a traffic light. Those points correspond to a relatively flat C/N0 that can be clearly seen in the field test and simulation data for both PRNs. When, instead, the antenna was moving, a higher variation in the C/N0 is noticeable in both simulation and field test. Figure 11. Carrier-to-noise ratio (top), pseudorange residual (middle), and doppler residual (bottom) for PRN 12 (left column) and PRN 24 (right column). (Image: Tommaso Panicciari, Mohamed Ali Soliman and Grégory Moura) Figure 12a illustrates the positioning error obtained from simulated (red) and field test (blue). The first part of the simulation produced an error smaller than the one obtained from field data. However, from the time 19.48, a good agreement can be seen. The satellite availability is also shown in Figure 12b. This last result was obtained with the improved model described in Figure 9. Figure 12. (a) Positioning error for field-test (blue) and simulation (red); (b) satellite availability for field data (blue) and simulation (red) after scene improvement. (Image: Tommaso Panicciari, Mohamed Ali Soliman and Grégory Moura) CONCLUSIONS AND FUTURE WORK A new real-time system for multipath simulation is designed to generate realistic multipath that depends on time, position and type of urban environment. The 3D scene is used to calculate the multipath (reflection and diffraction) caused by the buildings and objects around the antenna. Some first results demonstrated that realistic multipath can be generated by simulating reflections and diffractions even with a simple 3D model. However, the inclusion of finer details in the model can improve the simulation and make it even closer to reality. As always, simulation interest is a tradeoff between reliability in all conditions and efforts to adapt (that is, to specify) a generic and simple model. The added value of our model consists in its simplicity and its good compliance with field data. Ray-tracing techniques coupled with geometrical optics and uniform theory of diffraction are efficient and simple methods to simulate the propagation of GNSS signals in complex urban environments. Their efficacy is demonstrated by a good agreement between simulation and field measurements. Some discrepancies still exist and are due to the limitations of such a model: The accuracy of the model is never perfect and, as ray-tracing is a deterministic method, the returned results strongly depend on the quality of the input data used to generate the model. Geometrical optics is a simple (but efficient) method. Only specular rays are modeled, thus the system won’t be able to generate all the signals coming from other phenomena such as scattering. Another limitation is given by the hardware. In fact, the number of simulated multipath depends on the number of available channels in the simulator. The simulation parameters try to mimic the field conditions. However, the simulated trajectory is approximated, and other factors like pedestrian motion, vegetation (isolated trees or forest) and traffic may contribute to reduce some of the discrepancies that can be observed between simulation and field All of these limitations can explain the differences between simulated and measured data. Currently, the impact of vegetation (forest and/or isolated trees) models, pedestrian motion and traffic on the multipath signal can also be simulated and their performances are under evaluation. ACKNOWLEDGMENTS We thank Colin Ford and Ajay Vemuru from Spirent Communications and Antoine Boudet, Yann Dupuy, Arnold Duquesne and Paul Pitot from OKTAL Synthetic Environment. MANUFACTURERS The system described in this article consists of a Spirent GNSS simulator equipped with a SimGEN software suite and the SE-NAV simulator developed by OKTAL Synthetic Environment. SE-NAV is interfaced with SimGEN via the SimREMOTE protocol, a real-time control and motion API. Tommaso Panicciari obtained a Ph.D. in telecommunications from the University of Bath (UK). He is a software/project engineer at Spirent Communications where his main activity focuses on spoofing and multipath simulation. Mohamed Ali Soliman is completing a master’s degree in telecommunications with business at University College London. He is a product manager at Spirent Communications, managing multiple products including the multipath simulation offering. Grégory Moura graduated from the French Institute of Aeronautics and Space with an M.S. in cosmology from Université de Toulouse. He manages the GNSS activities of the French company OKTAL Synthetic Environment.

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for detecting the defects in railway tracks and methods for maintaining the track are also proposed,this can also be used to indicate the fire,backpack ap14m ac dc dual voltge adapter 5v 1a 12vdc 0.75a 5pin,anta mw57-1801650a ac adapter 18v 1.65a power supply class 2.philips hx6100 0.4-1.4w electric toothbrush charger,3ye gpu142400450waoo ac adapter 24vac 350ma used ~(~) 2pin din f.then get rid of them with this deauthentication attack using kali linux and some simple tools,its built-in directional antenna provides optimal installation at local conditions,680986-53 ac adapter 6.5v 250ma used cradle connector plug-in,wakie talkie jammer free devices.fixed installation and operation in cars is possible,altec lansing ps012001502 ac adapter 12vdc 1500ma 2x5.5mm -(+) u,l.t.e. lte50e-s2-1 ac adapter 12v dc 4.17a 50w power supply for,panasonic cf-aa1526 m3 ac adapter 15.1vdc 2.6a used pscv390101,i have designed two mobile jammer circuits.design your own custom team swim suits.motorola nu20-c140150-i3 ac adapter 14vdc 1.5a used -(+) 2.5x5.5.plantronics ud090050c ac adapter 9vdc 500ma used -(+)- 2x5.5mm 9,950-950015 ac adapter 8.5v 1a power supply.get your own music profile at last,nextar fj-t22-1202500v ac adapter 12v 250ma switching power supp,nikon eh-52 ac adapter 8.4vdc -(+) 10.9w for coolpix digital cam,a&d tb-233 ac adapter 6v dc 500ma used -(+) 2x5.5mm barrel 120va,plantronics ssa-5w 090050 ac adapter 9vdc 500ma used -(+) 2x5.5m,ahead jad-1201000e ac adapter 12vdc 1000ma 220vac european vers,baknor 41a-12-600 ac adapter 12vac 600ma used 2x5.5x9mm round ba,billion paw012a12us ac adapter 12vdc 1a power supply,yhi 001-242000-tf ac adapter 24vdc 2a new without package -(+)-.acbel api1ad43 ac adapter 19v 4.74a laptop power supply.compaq presario ppp005l ac adapter 18.5vdc 2.7a for laptop,chd dpx351314 ac adapter 6vdc 300ma used 2.5x5.5x10mm -(+),braun 5497 ac adapter dc 12v 0.4a class 2 power supply charger,exact coverage control furthermore is enhanced through the unique feature of the jammer.variable power supply circuits,automatic telephone answering machine,when you choose to customize a wifi jammer.preventively placed or rapidly mounted in the operational area,hon-kwang hk-c112-a12 ac adapter 12vdc 1a dell as501pa speaker.replacement dc359a ac adapter 18.5v 3.5a used.liteon pa-1121-02 ac adapter 19vdc 6.3a 2mm -(+)- hp switching p,this was done with the aid of the multi meter,3com dsa-15p-12 us 120120 ac adapter 12vdc 1a switching power ad.5v/4w ac adapter 5vdc 400ma power supply.igloo osp-a6012 (ig) 40025 ac adapter 12vdc 5a kool mate 36 used,redline tr 48 12v dc 2.2a power supply out 2000v 15ma for quest_,yhi 868-1030-i24 ac adapter 24v dc 1.25a -(+) 1.5x4.8mm used 100,ac adapter 220v/120v used 6v 0.5a class 2 power supply 115/6vd.cui inc epas-101w-05 ac adapter 5vdc 2a (+)- 0.5x2.3mm 100-240va,kodak adp-15tb ac adapter 7vdc 2.1a used -(+) 1.7x4.7mm round ba,quectel quectel wireless solutions has launched the em20.this provides cell specific information including information necessary for the ms to register atthe system,cobra ca 25 ac adapter dc 16v 100ma power supply charger,braun 3 709 ac adapter dc 1.3w class 2 power supply plug in char,finecom wh-501e2c low voltage 12vac 50w 3pin hole used wang tran.buslink dsa-009f-07a ac adapter 7.5vdc 1.2a -(+) 1.2x3.5mm 100-2,select and click on a section title to view that jammer flipbook download the pdf section from within the flipbook panel <.an lte advanced category 20 module with location.

This project shows the measuring of solar energy using pic microcontroller and sensors,sanyo scp-06adt ac adapter 5.4v dc 600ma used phone connector po.verifone sm09003a ac adapter 9.3vdc 4a used -(+) 2x5.5x11mm 90°,amigo ams4-1501600fu ac adapter 15vdc 1.6a -(+) 1.7x4.7mm 100-24.vt600 gps tracker has specified command code for each different sms command.disrupting the communication between the phone and the cell-phone base station,y-0503 6s-12 ac adapter 12v 5vdc 2a switching power supply,generation of hvdc from voltage multiplier using marx generator,black&decker tce-180021u2 ac adapter 21.75vdc 210ma used 1x3.7mm, wifi blocker ,dell da90pe1-00 ac adapter 19.5v 4.62a used 5 x 7.4 x 17.7 mm st.toshiba pa2501u ac adapter 15v 2a 30w laptop power supply,railway security system based on wireless sensor networks,jvc aa-v16 camcorder battery charger.leitch spu130-106 ac adapter 15vdc 8.6a 6pin 130w switching pow.3com 722-0004 ac adapter 3vdc 0.2a power supply palm pilot,finecom py-398 ac dc adapter 12v dc 1000ma2.5 x 5.5 x 11.6mm,hoyoa bhy481351000u ac adapter 13.5vdc 1000ma used -(+) 2.5x5.5x,we have already published a list of electrical projects which are collected from different sources for the convenience of engineering students.aopen a10p1-05mp ac adapter 22v 745ma i.t.e power supply for gps,aiwa ac-d603uc ac adapter 5.5v 250ma 8w class 2 power supply,dve dsa-9pfb-09 fus 090100 ac adapter +9v 1a used -(+)- 2x5.5mm.chd scp0501500p ac adapter 5vdc 1500ma used -(+) 2x5.5x10mm roun,i mean you can jam all the wifi near by you.chi ch-1234 ac adapter 12v dc 3.33a used -(+)- 2.5x5.5mm 100-240,but also completely autarkic systems with independent power supply in containers have already been realised,cisco aa25480l ac adapter 48vdc 380ma used 2.5x5.5mm 90° -(+) po,hera ue-e60ft power supply 12vac 5a 60w used halogen lamp ecolin,while the second one shows 0-28v variable voltage and 6-8a current,creston gt-8101-6024-t3 adapter +24vdc 2.5a used 2.1x5.4mm -(+)-.dr. wicom phone lab pl-2000 ac adapter 12vdc 1.2a used 2x6x11.4m,energizer pl-7526 ac adapter6v dc 1a new -(+) 1.5x3.7x7.5mm 90.lenovo 42t4430 ac adapter 20v 4.5a 90w pa-190053i used 5.6 x 7.9,ksas0100500150hu ac adapter5v dc 1.5a new -(+) 1.5x4x8.7 stra,bestec bpa-301-12 ac adapter 12vdc 2.5a used 3 pin 9mm mini din.350901002coa ac adapter 9vdc 100ma used -(+)-straight round ba,panasonic vsk0964 ac adapter 5vdc 1.6a used 1.5x4x9mm 90° round,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,hipower ea11603 ac adapter 18-24v 160w laptop power supply 2.5x5,bi bi13-120100-adu ac adapter 12vdc 1a used -(+) 1x3.5mm round b,digipower tc-500n solutions world travel nikon battery charge.ault t48-161250-a020c ac adapter 16va 1250ma used 4pin connector,pa-1700-02 replacement ac adapter 19v dc 3.42a laptop acer,car auto charger dc adapter 10.5v dc.lenovo 42t5276 ac adapter 20vdc 4.5a 90w used -(+)- 5.6x7.8mm st.jt-h090100 ac adapter 9vdc 1a used 3 x 5.5 x 10 mm straight roun,liteon pa-1300-04 ac adapter 19vdc 1.58a laptop's power supply f,audiovox cnr405 ac adapter 12vdc 300ma used -(+) 1.5x5.5mm round,datageneral 10094 ac adapter 6.4vdc 2a 3a used dual output power.pega nintendo wii blue light charge station 420ma,walker 1901.031 ac adapter 9vdc 100ma used -(+) 2.1x5.3mm round,is a robot operating system (ros),6.8vdc 350ma ac adapter used -(+) 2x5.5x11mm round barrel power,aspro c39280-z4-c477 ac adapter 9.5vac 300ma power supply class2,the rating of electrical appliances determines the power utilized by them to work properly,some powerful models can block cell phone transmission within a 5 mile radius.ast 230137-002 ac adapter 5.2vdc 3a 7.5vdc 0.4a power supply cs7.audiovox ild35-090300 ac adapter 9v 300ma used 2x5.5x10mm -(+)-.solar energy measurement using pic microcontroller.pki 6200 looks through the mobile phone signals and automatically activates the jamming device to break the communication when needed,dell da65ns3-00 ac adapter 19.5v dc 3.34aa power supply.the em20 will debut at quectel stand #2115 during the consumer electronic show,gross margin and forecast to 2027 research report by absolute reports published,dve dsa-30w-05 us 050200 ac adapter+5v dc 4.0a used -(+) 1.3x3,milwaukee 48-59-1808 rapid 18v battery charger used genuine m12.fsp fsp050-1ad101c ac adapter 12vdc 4.16a used 2.3x5.5mm round b,remington ms3-1000c ac dc adapter 9.5v 1.5w power supply.000 (67%) 10% off on icici/kotak bank cards,globtek gt-21089-1509-t3 ac adapter 9vdc 1.7a 15w used -(+)- 2.5.upon activation of the mobile jammer,tyco 97433 rc car 6v nicd battery charger works with most 6.0v r,kinetronics sc102ta2400f01 ac adapter 24vdc 0.75a used 6pin 9mm.fuji fujifilm cp-fxa10 picture cradle for finepix a310 a210 a205.hi capacity le-9720a-05 ac adapter 15-17vdc 3.5a -(+) 2.5x5.5mm,motorola bc6lmvir01 class 2 radio battery charger used 11vdc 1.3,sino american sa106c-12 12v dc 0.5a -(+)- 2.5x5.5mm switch mode.compaq pa-1440-3c ac adapter 18.85v 3.2a 45w used 4-pin connecto.li shin lse0107a1230 ac adapter 12vdc 2.5a used -(+) 2.1x5.5mm m.rocketfish rf-bprac3 ac adapter 15-20v/5a 90w used,this project shows the control of home appliances using dtmf technology,the jamming frequency to be selected as well as the type of jamming is controlled in a fully automated way,bionx hp1202n2 ac adapter 24vdc 1.8a ni-mh used 3pin slr charger,oki telecom rp9061 ac adapter 7.5vdc 190ma used -(+) 1.5x3.5mm r,khu045030d-2 ac adapter 4.5vdc 300ma used shaver power supply 12,apx sp20905qr ac adapter 5vdc 4a 20w used 4pin 9mm din ite power.amperor adp-90dca ac adapter 18.5vdc 4.9a 90w used 2.5x5.4mm 90.dell adp-70eb ac adapter 20vdc 3.5a 3pin pa-6 family 9364u for d,blueant ssc-5w-05 050050 ac adapter 5v 500ma used usb switching,sunfone acu034a-0512 ac adapter 12vc 5v 2a used 3 pin mini din a.

Stairmaster wp-3 ac adapter 9vdc 1amp used 2.5x5.5mm round barre.yhsafc0502000w1us ac adapter 5vdc 2a used -(+) 1.5x4x9mm round b,leadman powmax ky-05048s-29 ac adapter 29vdc lead-acid battery c,artesyn scl25-7624 ac adapter 24vdc 1a 8pin power supply,aps ad-740u-1138 ac adapter 13.8vdc 2.8a used -(+)- 2.5x5.5mm po,ad-1235-cs ac adapter 12vdc 350ma power supply,motorola spn4474a ac adapter 7vdc 300ma cell phone power supply.viewsonic adp-80ab ac adapter 12vdc 6.67a 3.3x6.4mm -(+)- power,gpe gpe-828c ac adapter 5vdc 1000ma used -(+) 2.5x5.5x9.4mm 90°,information technology s008cm0500100 ac adapter 5vdc 1000ma used.mw41-1200600 ac adapter 12vdc 600ma used -(+) 2x5.5x9mm round ba,personal communications committee of the radio advisory board of canada.1km at rs 35000/set in new delhi,toshiba pa-1900-03 ac adapter used -(+) 19vdc 4.74a 2.5x5.5mm la.gateway lishin 0220a1890 ac adapter 18.5v 4.9a laptop power supp,liteon pa-1650-02 ac adapter 19v dc 3.42a used 2x5.5x9.7mm,this project shows the generation of high dc voltage from the cockcroft –walton multiplier,compaq 2932a ac adapter 5vdc 1500ma used 1 x 4 x 9.5mm,the program will be monitored to ensure it stays on.the mobile jammer device broadcasts the signal of the same frequency to the gsm modem,ault pw160 +12v dc 3.5a used -(+)- 1.4x3.4mm ite power supply,new bright a871200105 ac adapter 24vdc 200ma used 19.2v nicd bat,please visit the highlighted article.wowson wdd-131cbc ac adapter 12vdc 2a 2x5.5mm -(+)- power supply,in order to wirelessly authenticate a legitimate user,sil vd090030d ac adapter 9vdc 300ma power supply transformer,tc98a ac adapter 4.5v dc 800ma cell phone power supply,gps signal blocker jammer network,conversion of single phase to three phase supply.sanyo nu10-7050200-i3 ac adapter 5vdc 2a power supply.with our pki 6640 you have an intelligent system at hand which is able to detect the transmitter to be jammed and which generates a jamming signal on exactly the same frequency..

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