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By Pratibha B. Anantharamu, Daniele Borio, and Gérard Lachapelle Spatial and temporal information of signals received from multiple antennas can be applied to mitigate the impact of new GPS and Galileo signals’ binary-offset sub-carrier, reducing multipath and interference effects. New modernized GNSS such as GPS, Galileo, GLONASS, and Compass broadcast signals with enhanced correlation properties as compared to the first generation GPS signals. These new signals are characterized by different modulations that provide improved time resolution, resulting in more precise range measurements, along with the advantage of being more resilient to multipath and RF interference. One of these modulations is the binary-offset-carrier (BOC) modulation transmitted by Galileo and modernized GPS. Despite the benefits of BOC modulation schemes, difficulties in tracking BOC signals can arise. The autocorrelation function (ACF) of BOC signals is multi-peaked, potentially leading to false peak-lock and ambiguous tracking. Intense research activities have produced different BOC tracking schemes that address the issue of multi-peaked BOC signal tracking. Additionally, new tracking schemes including space-time processing can be adopted to further improve the performance of existing algorithms. Space-time equalization is a technique that utilizes spatial and temporal information of signals received from multiple antennas to compensate for the effects of multipath fading and co-channel interference. In the context of BOC signals, these kinds of techniques can be applied to mitigate the impact of the sub-carrier, which is responsible for a multi-peaked ACF, reducing multipath and interference effects. In temporal processing, traditional equalizers in time-domain are useful to compensate for signal distortions. But equalization becomes more challenging in the case of BOC signals, where the effect of both sub-carrier and multipath must be accounted for. On the other hand, by using spatial processing, it should be possible to extract the desired signal component from a set of received signals by electronically varying the antenna array directivity (beamforming). The combination of an antenna array and a temporal equalizer results in better system performance. Hence the main objective of this research is to apply space-time processing techniques to BOC modulated signals received by an antenna array. The main intent is to enhance the signal quality, avoid ambiguous tracking and improve tracking performance under weak signal environments or in the presence of harsh multipath components. The focus of previous antenna-array processing using GNSS signals was on enhancing GNSS signal quality and mitigating interference and/or multipath related issues. Unambiguous tracking was not considered. Here, we develop a space-time algorithm to mitigate ambiguous tracking of BOC signals along with improved signal quality. The main objective is to obtain an equalization technique that can operate on BOC signals to provide unambiguous BPSK-like correlation function capable of altering the antenna array beam pattern to improve the signal to interference plus noise ratio. Space-time adaptive processing structure proposed for BOC signal tracking; the temporal filter provides signal with unambiguous ACF whereas the spatial filter provides enhanced performance with respect to multipath, interference, and noise. Initially, temporal equalization based on the minimum mean square error (MMSE) technique is considered to obtain unambiguous ACF on individual antenna outputs. Spatial processing is then applied on the correlator outputs based on a modified minimum variance distortionless response (MVDR) approach. As part of spatial processing, online calibration of the real antenna array is performed which also provides signal and noise information for the computation of the beamforming weights. Finally, the signal resulting from temporal and spatial equalization is fed to a common code and carrier tracking loop for further processing. The effectiveness of the proposed technique is demonstrated by simulating different antenna array structures for BOC signals. Intermediate-frequency (IF) simulations have been performed and linear/planar array structures along with different signal to interference plus noise ratios have been considered. A modified version of The University of Calgary software receiver, GSNRx, has been used to simultaneously process multi-antenna data. Further tests have been performed using real data collected from Galileo test satellites, GIOVE-A and GIOVE-B, using an array structure comprising of two to four antennas. A 4-channel front-end designed in the PLAN group, and a National Instruments (NI) signal vector analyzer equipped with three PXI-5661 front-ends (NI 2006) have been used to collect data synchronously from several antennas. The data collected from the antennas were progressively attenuated for the analysis of the proposed algorithm in weak signal environments. From the performed tests and analysis, it is observed that the proposed methodology provides unambiguous ACF. Spatial processing is able to efficiently estimate the calibration parameters and steer the antenna array beam towards the direction of arrival of the desired signal. Thus, the proposed methodology can be used for efficient space-time processing of new BOC modulated GNSS signals. Signal and Systems Model The complex baseband GNSS signal vector received at the input of an antenna array can be modeled as     (1) where •    M is the number of antenna elements; •    L is the number of satellites; •    C is a M × M calibration matrix capturing the effects of antenna gain/phase mismatch and mutual coupling; •    si =  is the complex M × 1 steering vector relative to the signal from the ith satellite. si captures the phase offsets between signals from different antennas; •     is the noise plus interference vector observed by the M antennas. The ith useful signal component xi (t) can be modeled as    (2) where •    Ai is the received signal amplitude; •    di() models the navigation data bit; •    ci() is the ranging sequence used for spreading the transmitted data; •    τ0,i, f0,i and φ0,imodel the code delay, Doppler frequency and carrier phase introduced by the communication channel. The index i is used to denote quantities relative to the ith satellite. The ranging code ci() is made up of several components including a primary spreading sequence, a secondary code and a sub-carrier. For a BPSK modulated signal, the sub-carrier is a rectangular window of duration Tc. In the case of BOC modulated signals, the sub-carrier is generated as the sign of a sinusoidal carrier. The presence of this sub-carrier produces a multi-peaked autocorrelation function making the acquisition/tracking processes ambiguous. In order to extract signal parameters such as code delay and Doppler frequency of the ith useful signal xi(t), the incoming signal  is correlated with a locally generated replica of the incoming code and carrier. This process is referred to as correlation where the carrier of the incoming signal is at first wiped off using a local complex carrier replica. The spreading code is also wiped off using a ranging code generator. The signal obtained after carrier and code removal is integrated and dumped over T seconds to provide correlator outputs. The correlator output for the hth satellite and mth antenna can be modeled as:    (3) where vm,k are the coefficients of the calibration matrix, C and R(Δτh) is the multi-peaked ACF. τh, fD,h and φh are the code delay, Doppler frequency and carrier phase estimated by the receiver and Δτh, ΔfD,h and Δφh are the residual delay, frequency, and phase errors.  is the residual noise term obtained from the processing of η(t). Eq. (3) is the basic signal model that will be used for the development of a space-time technique suitable for unambiguous BOC tracking. When BOC signals are considered, algorithms should be developed to reduce the impact of  that include receiver noise, interference and multipath components, along with the mitigation of ambiguities in R(Δτh). Space-time processing techniques have the potential to fulfill those requirements. Space-Time Processing A simplified representation of a typical space-time processing structure is provided in Figure 1. Each antenna element is followed by K taps with δ denoting the time delay between successive taps forming the temporal filter. The combination of several antennas forms the spatial filter. wmk are the space-time weights with 0 ≤ k ≤ K and 0 ≤ m ≤ M. k is the temporal index and m is the antenna index. Figure 1. Block diagram of space-time processing. The array output after applying the space-time filter can be expressed as    (4) where (wmk)* denotes complex conjugate. The spatial-only filter can be realized by setting K=1 and a temporal only filter is obtained when M=1. The weights are updated depending on the signal/channel characteristics subject to user-defined constraints using different adaptive techniques. This kind of processing is often referred to as Space-Time Adaptive Processing (STAP). The success of STAP techniques has been well demonstrated in radar, airborne and mobile communication systems. This has led to the application of STAP techniques in the field of GNSS signal processing. Several STAP techniques have been developed for improving the performance of GNSS signal processing. These techniques exploit the advantages of STAP to minimize the effect of multipath and interference along with improving the overall signal quality. Space-time processing algorithms can be broadly classified into two categories: decoupled and joint space-time processing. The joint space-time approach exploits both spatial and temporal characteristics of the incoming signal in a single space-time filter while the decoupled approach involves several temporal equalizers and a spatial beamformer that are realized in two separate stages (Figure 2). Figure 2. Representation of two different space-time processing techniques When considering the decoupled approach for GNSS signals, temporal filters can be applied on the data from the different antennas whereas the spatial filter can be applied at two different stages, namely pre-correlation or post-correlation. In the pre-correlation stage, spatial weights are applied on the incoming signal after carrier wipe-off while in the post-correlation stage, spatial weights are applied after the Integrate & Dump (I&D) block on the correlator outputs. In pre-correlation processing, the update rate of the weight vector is in the order of MHz (same as the sampling frequency) whereas the post-correlation processing has the advantage of lower update rates in the order of kHz (I&D frequency). In the pre-correlation case, the interference and noise components prevail significantly in the spatial correlation matrix and would result in efficient interference mitigation and noise reduction. But the information on direct and reflected signals are unavailable since the GNSS signals are well below the noise level. This information can be extracted using post-correlation processing. In the context of new GNSS signals, efforts to utilize multi-antenna array to enhance signal quality along with interference and multipath mitigation have been documented using both joint and decoupled approaches where the problem of ambiguous signal tracking was not considered. In our research, we considered the decoupled space-time processing structure. Temporal processing is applied at each antenna output and spatial processing is applied at the post-correlation stage. Temporal processing based on MMSE equalization and spatial processing based on the adaptive MVDR beamformer are considered. Methodology The opening figure shows the proposed STAP architecture for BOC signal tracking. In this approach, the incoming BOC signals are at first processed using a temporal equalizer that produces a signal with a BPSK-like spectrum. The filtered spectra from several antennas are then combined using a spatial beamformer that produces maximum gain at the desired signal direction of arrival. The beamformed signal is then fed to the code and carrier lock loops for further processing. The transfer function of the temporal filter is obtained by minimizing the error:    (5) where H(f) is the transfer function of the temporal filter that minimizes the MSE, εMMSES, between the desired spectrum, GD(f), and filtered spectrum, Gx(f)H(f). The spectrum of the incoming BOC signal is denoted by Gx(f). λ is a weighting factor determining the impact of noise with respect to that of an ambiguous correlation function. N0 is the noise power spectral density and C the carrier power. The desired spectrum is considered to be a BPSK spectrum. Since this type of processing minimizes the MSE, it is denoted MMSE Shaping (MMSES). Figure 3 shows a sample plot of the ACF obtained after applying MMSES on live Galileo BOCs(1,1) signals collected from the GIOVE-B satellite. The input C/N0 was equal to 40 dB-Hz and the ACF was averaged over 1 second of data. It can be observed that the multi-peaked ACF was successfully modified by MMSES to produce a BPSK-like ACF without secondary peaks. Also narrow ACF were obtained by modifying the filter design for improved multipath mitigation. Thus using temporal processing, the antenna array data are devoid of ambiguity due to the presence of the sub-carrier. After temporal equalization, the spatial weights are computed and updated based on the following information: The signal and noise covariance matrix obtained from the correlator outputs; Calibration parameters estimated to minimize the effect of mutual coupling and antenna gain/phase mismatch; Satellite data decoded from the ephemeris/almanac containing information on the GNSS signal DoA. The weights are updated using the iterative approach for the MVDR beamformer to maximize the signal quality according to the following steps: Step 1: Update the estimate of the steering vector for the hthsatellite using the calibration parameters as:    (6) Here vi,j represents the estimated calibration parameters using the correlator outputs given by Eq. (3) and shm is the element of the steering vector computed using the satellite ephemeris/almanac data. Step 2: Update the weight vector  (the temporal index, k, is removed for ease of notation) using the new estimate of the covariance matrix and steering vector as    (7) where  is the input signal after carrier wipe-off. Repeat Steps 1 and 2 until the weights converge. Finally compute the correlator output to drive the code and carrier tracking loop according to Equation (4). The C/N0 gain obtained after performing calibration and beamforming on a two-antenna linear array and four-antenna planar array data collected using the four channel front-end is provided in Figure 4 and Figure 5. The C/N0 plots are characterized by three regions: Single Antenna that provides C/N0 estimates obtained using q0,h alone; Before Calibration that provides C/N0 estimates obtained by compensating only the effects of the steering vector, si, before combining the correlator outputs from all antennas; After Calibration that provides C/N0 estimates obtained by compensating the effects of both steering vector, si and calibration matrix, C, before combining correlator outputs from all antennas. After calibration, beamforming provides approximately a C/N0 gain equal to the theoretical one on most of the satellites whereas before calibration, the gain is minimal and, in some cases, negative with respect to the single antenna case. These results support the effectiveness of the adopted calibration algorithm and the proposed methodology that enables efficient beamforming. Figure 4. C/N0 estimates obtained after performing calibration and beamforming on linear array data. Figure 5. C/N0 estimates obtained after performing calibration and beamforming on the planar array data. Results and Analysis IF simulated BOCs(1,1) signals for a 4-element planar array with array spacing equal to half the wavelength of the incoming signal has been considered to analyze the proposed algorithm. The input signal was characterized by a C/N0 equal to 42 dB-Hz at an angle of arrival of 20° elevation and 315° azimuth angle. A sample plot of the antenna array pattern using the spatial beamformer  is shown in Figure 6. In the upper part of Figure 6, the ideal case in the absence of interference was considered. The algorithm is able to place a maximum of the array factor in correspondence of the signal DoA. Figure 6. Antenna array pattern for a 4-element planar array computed using a MVDR beamformer in the presence of two interference sources. In the bottom part, results in the presence of interference are shown. Two interference signals were introduced at 60 and 45 degree elevation angles. It can be clearly observed that, in the presence of interference, the MVDR beamformer successfully adapted the array beam pattern to place nulls in the interference DoA. In order to further test the tracking capabilities of the full system, semi-analytic simulations were performed for the analysis of digital tracking loops. The simulation scheme is shown in Figure 7 and consists of M antenna elements. Each antenna input for the hth satellite is defined by a code delay (τm,h) and a carrier phase value (φm,h) for DLL and PLL analysis. φm,h captures the effect of mutual coupling, antenna phase mismatch and phase effects due to different antenna hardware paths. To analyze the post-correlation processing structure, each antenna input is processed independently to obtain the error signal,  Δτm,h / Δφm,h as  where  are the current delay/phase estimates. Figure 7. Semi-analytic simulation model for a multi-antenna system comprising M antennas with a spatial beamformer. Each error signal is then used to obtain the signal components that are added along with the independent noise components, . The combined signal and noise components from all antenna elements are fed to the spatial beamformer to produce a single output according to the algorithm described in the Methodology section. Finally, the beamformer output is passed through the loop discriminator, filter and NCO to provide a new estimate . The Error to Signal mapping block and the noise generation process accounts for the impact of temporal filtering. Figure 8 shows sample tracking jitter plots for a PLL with a single, dual and three-antenna array system obtained using the structure described above. Figure 8. Phase-tracking jitter obtained for single, dual and three-antenna linear array as a function of the input C/N0 for a Costas discriminator (20 milliseconds coherent integration and 5-Hz bandwidth). The number of simulation runs considered was 50000 with a coherent integration time of 20 ms and a PLL bandwidth equal to 5 Hz. As expected the tracking jitter improves when the number of antenna elements is increased along with improved tracking sensitivity. As expected, the C/N0 values at which loss of lock occurs for a three antenna system is reduced with respect to the single antenna system, showing its superiority. Real data analysis. Figure 9 shows the experimental setup considered for analysis of the proposed combined space-time algorithm. Two antennas spaced 8.48 centimeters apart were used to form a 2-element linear antenna array structure. The NI front-end was employed for the data collection process to synchronously collect data from the two-antenna system. Data on both channels were progressively attenuated by 1 dB every 10 seconds to simulate a weak signal environment until an attenuation of 20 dB was reached. When this level of attenuation was reached, the data were attenuated by 1 dB every 20 seconds to allow for longer processing under weak signal conditions. In this way, data on both antennas were attenuated simultaneously. Data from Antenna 1 were passed through a splitter, as shown in Figure 9, before being attenuated in order to collect signals used to produce reference code delay and carrier Doppler frequencies. Figure 9. Experimental setup with signals collected using two antennas spaced 8.48 centimeters apart. BOCs(1,1) signals collected using Figure 9 were tracked using the temporal and spatial processing technique described in the opening figure. The C/N0 results obtained using single and two antennas are provided in Figure 10. In the single antenna case, only temporal processing was used. In this case, the loop was able to track signals for an approximate C/N0 of 19 dB-Hz. Using the space-time processing, the dual antenna system was able to track for nearly 40 seconds longer than the single antenna case, thus providing around 2 dB improvement in tracking sensitivity. Figure 10. C/N0 estimates obtained using a single antenna, temporal only processing and a dual-antenna array system using space-time processing. Conclusions A combined space-time technique for the processing of new GNSS signals including a temporal filter at the output of each antenna, a calibration algorithm and a spatial beamformer has been developed. The proposed methodology has been tested with simulations and real data. It was observed that the proposed methodology was able to provide unambiguous tracking after applying the temporal filter and enhance the signal quality after applying a spatial beamformer. The effectiveness of the proposed algorithm to provide maximum signal gain in the presence of several interference sources was shown using simulated data. C/N0 analysis for real data collected using a dual antenna array showed the effectiveness of combined space-time processing in attenuated signal environments providing a 2 dB improvement in tracking sensitivity. Pratibha B. Anantharamu received her doctoral degree from Department of Geomatics Engineering, University of Calgary, Canada. She is a senior systems engineer at Accord Software & Systems Pvt. Ltd., India. 
Daniele Borio received a doctoral degree in electrical engineering from Politecnico di Torino. He is a post-doctoral fellow at the Joint Research Centre of the European Commission.
 Gérard Lachapelle holds a Canada Research Chair in Wireless Location in the Department of Geomatics Engineering, University of Calgary, where he heads the Position, Location, and Navigation (PLAN) Group.

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Ryobi 1400656 1412001 14.4v charger 16v 2a for drill battery.we hope this list of electrical mini project ideas is more helpful for many engineering students,this project shows the starting of an induction motor using scr firing and triggering.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.dell la65ns0-00 65w ac adapter 19.5v used 1x4.4x7.5mm laptop d61,edac ea10523c-120 ac adapter 12vdc 5a used 2.5 x 5.5 x 11mm,long-gun registry on the chopping block.people might use a jammer as a safeguard against sensitive information leaking,cui stack dsa-0151d-12 ac dc adapter 12v 1.5a power supply,propower pc-7280 battery charger 2.2vdc 1.2ahx6 used 115vac 60hz.jhs-q34-adp ac adapter 5vdc 2a used 4 pin molex hdd power connec.cyber acoustics u075035d ac adapter 7.5vdc 350ma +(-)+ 2x5.5mm 1.compaq evp100 ac dc adapter 10v 1.5a 164153-001 164410-001 4.9mm.sima sup-60lx ac adapter 12-15vdc used -(+) 1.7x4mm ultimate cha.pc based pwm speed control of dc motor system,hp compaq ppp009h ac adapter 18.5vdc 3.5a -(+) 1.7x4.8 100-240va.computer rooms or any other government and military office.hr05ns03 ac adapter 4.2vdc 600ma used -(+) 1x3.5mm battery charg,toshiba pa3035u-1aca paca002 ac adapter 15v 3a like new lap -(+),ktec ka12a120120046u ac adapter 12vac 1200ma ~(~)~ 2x5.5mm linea,rio tesa5a-0501200d-b ac dc adapter 5v 1a usb charger,ault pw160 +12v dc 3.5a used -(+)- 1.4x3.4mm ite power supply,d-link m1-10s05 ac adapter 5vdc 2a -(+) 2x5.5mm 90° 120vac route,eng epa-121da-05a ac adapter 5v 2a used -(+) 1.5x4mm round barre,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.airspan sda-1 type 2 ethernet adapter 48vdc 500ma,shanghai dy121-120010100 ac adapter 12v dc 1a used -(+) cut wire,icarly ac adapter used car charger viacom international inc,muld3503400 ac adapter 3vdc 400ma used -(+) 0.5x2.3x9.9mm 90° ro.radioshack 43-428 ac adapter 9vdc 100ma (-)+ used 2x5.4mm 90°,foreen 35-d12-100 ac adapter12vdc 100ma used90 degree right,several possibilities are available,honor ads-7.fn-06 05008gpcu ac adapter 5v 1.5a switching power,vanguard mp15-wa-090a ac adapter +9vdc 1.67a used -(+) 2x5.5x9mm,zenith 150-308 ac adapter 16.5vdc 2a used +(-) 2x5.5x9.6mm round.thermolec dv-2040 ac adapter 24vac 200ma used ~(~) shielded wire,konica minolta bc-600 4.2v dc 0.8a camera battery charger 100-24.> -55 to – 30 dbmdetection range,liteon pa-1121-22 ac adapter dc 20v 6a laptop power supplycond.

D-link smp-t1178 ac adapter 5vdc 2.5a -(+) 2x5.5mm 120vac power.the next code is never directly repeated by the transmitter in order to complicate replay attacks,mgp f10603-c ac adapter 12v-14v dc 5-4.28a used 2.5 x 5.4 x 12.1,components required555 timer icresistors – 220Ω x 2.condor 48a-9-1800 ac adapter 9vac 1.8a ~(~) 120vac 1800ma class.kodak easyshare camera dock ii cx4200 series with 7v ac adapter.with our pki 6670 it is now possible for approx.aiwa ac-d603uc ac adapter 5.5v 250ma 8w class 2 power supply.meanwell gs220a24-r7b ac adapter 24vdc 9.2a 221w 4pin +(::)-10mm,braun 4729 ac adapter 250vac ~ 2.5a 2w class 2 power supply,the third one shows the 5-12 variable voltage.atlinks 5-2495a ac adapter 6vdc 300ma used -(+) 2.5x5.5x12mm rou,a mobile phone might evade jamming due to the following reason,complete infrastructures (gsm.radioshack 273-1695 ac adapter 3,5,6,6.5vdc 2.5a digital camera,cui stack dv-530r 5vdc 300ma used -(+) 1.9x5.4mm straight round,d-link mt12-y075100-a1 ac adapter 7.5vdc 1a -(+) 2x5.5mm ac adap,apple design m2763 ac adapter 12vdc 750ma -(+) 2.5x5.5mm used 12.car adapter 7.5v dc 600ma for 12v system with negative chassis g.le-9702b ac adapter 12vdc 3.5a used -(+) 4pin din lcd power supp,aps ad-740u-1120 ac adapter 12vdc 3a used -(+)- 2.5x5.5mm barrel,yhi 001-242000-tf ac adapter 24vdc 2a new without package -(+)-,finecome tr70a15 ac adapter 15vdc 4.6a 6pins like new 122-000033,jentec jta0402d-a ac adapter 5vdc 1.2a wallmount direct plug in.netbit dsc-51f-52p us ac adapter 5.2v 1a switching power supply,audiovox tesa2-1202500 ac adapter 12vdc 2.5a power supply,replacement af1805-a ac adapter 5vdc 2.5a power supply 3 pin din,dve dsa-9pfb-09 fus 090100 ac adapter +9v 1a used -(+)- 2x5.5mm,apple a1202 ac adapter 12vdc 1.8a used 2.5x5.5mm straight round,bestec bpa-301-12 ac adapter 12vdc 2.5a used 3 pin 9mm mini din,this is unlimited range jammer free device no limit of distance just insert sim in device it will work in 2g,extra shipping charges for international buyers partial s&h paym.spec lin sw1201500-w01 ac adapter 12vdc 1.5a shield wire new,230 vusb connectiondimensions.liteon pa-1151-08 ac adapter 19v 7.9a used 3.3 x 5.5 x 12.9mm.ikea yh-u050-0600d ac adapter 5vdc 500ma used -(+) 2.5x6.5x16mm,duracell cefadpus 12v ac dc adapter 1.5a class 2 power supply.power-win pw-062a2-1y12a ac adapter 12vdc 5.17a 62w 4pin power,kensington k33404us ac adapter 16v 5.62a 19vdc 4.74a 90w power.

Mastercraft 054-3103-0 dml0529 90 minute battery charger 10.8-18,ault mw116ka1249f02 ac adapter 12vdc 6.67a 4pin (: :) straight.here is the project showing radar that can detect the range of an object,hb hb12b-050200spa ac adapter 5vdc 2000ma used 2.3 x 5.3 x 11.2,compaq ppp003sd ac adapter 18.5v 2.7a laptop power supply,toshiba pa3083u-1aca ac adapter 15vdc 5a used-(+) 3x6..5mm rou.delphi tead-57-121800u ac adapter 12vdc 1.8a used -(+) 2.15.5mm.hitachi pc-ap4800 ac adapter 19vdc 2.37a used -(+)- 1.9 x 2.7 x.sony ac-lm5a ac adapter 4.2vdc 1.7a used camera camcorder charge,nyko 87000-a50 nintendo wii remote charge station,rechercher produits de bombe jammer+433 -+868rc 315 mhz de qualité.hewlett packard tpc-ca54 19.5v dc 3.33a 65w -(+)- 1.7x4.7mm used,toshiba pa-1900-23 ac adapter 19vdc 4.74a -(+) 2.5x5.5mm 90w 100,this sets the time for which the load is to be switched on/off,hppa-1121-12h ac adapter 18.5vdc 6.5a 2.5x5.5mm -(+) used 100-,pa-1121-02hd replacement ac adapter 18.5v 6.5a laptop power supp,t4 spa t4-2mt used jettub switch power supply 120v 15amp 1hp 12,but are used in places where a phone call would be particularly disruptive like temples,delta electronics adp-10ub ac adapter 5v 2a used -(+)- 3.3x5.5mm,with infrared the remote control turns on/off the power,hp f1011a ac adapter 12vdc 0.75a used -(+)- 2.1x5.5 mm 90 degree,co star a4820100t ac adapter 20v ac 1a 35w power supply,uttar pradesh along with their contact details &.basically it is way by which one can restrict others for using wifi connection,ktec ksafc0500150w1us ac adapter 5vdc 1.5a -(+) 2.1x5.5mm used c.business listings of mobile phone jammer,potrans up01011050 ac adapter 5v 2a 450006-1 ite power supply,ibm pa-1121-071 ac adapter 16vdc 7.5a used 4-pin female 02k7086,switchbox lte24e-s1-1 ac adapter 5vdc 4a 20w used -(+)- 1.2 x 3.,hitek plus220 ac adapter 20vdc 2.5a -(+)- 2.5x5.6 100-240vac use,cui inc epa-201d-09 ac adapter 9vdc 2.2a used -(+)- 2x5.4mm stra,hitron heg42-12030-7 ac adapter 12v 3.5a power supply for laptop,the first circuit shows a variable power supply of range 1,50/60 hz transmitting to 24 vdcdimensions,welland switching adapter pa-215 5v 1.5a 12v 1.8a (: :) 4pin us.wifi network jammer using kali linux introduction websploit is an open source project which is used to scan and analysis remote system in order to find various type of vulnerabilites,ahead mw41-1200500a ac adapter ac 12v 500ma straight round barre.he has black hair and brown eyes.gnt ksa-1416u ac adapter 14vdc 1600ma used -(+) 2x5.5x10mm round.

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.amigo 121000 ac adapter 12vdc 1000ma used -(+) 2 x 5.5 x 12mm.delta adp-60db rev.b ac adapter 19vdc 3.16a used 3 x 5.5 x 9.6mm,deer ad1505c ac adapter 5vdc 2.4a ac adapter plugin power supply,eng 3a-302da18 ac adapter 20vdc 1.5a new 2.5x5.5mm -(+) 100-240v,radio shack 23-243 ac dc adapter 12v 0.6a switching power supply.the mobile jammer device broadcasts the signal of the same frequency to the gsm modem,leap frog 690-11213 ac adapter 9vdc 700ma used -(+) 2x5x11mm 90°.dee ven ent dsa-0301-05 5v 3a 3pin power supply,digipower tc-500n solutions world travel nikon battery charge.modeling of the three-phase induction motor using simulink,sagemcom nbs24120200vu ac adapter 12vdc 2a used -(+) 2.5x5.5mm 9,st-c-075-18500380ct ac adapter 18.5vdc 2.7a 3.5a 3.8a used 1.6x4.ultrafire wf-139 rechargeable battery charger new for 3.7v 17500.apd da-30i12 ac adapter 12vdc 2.5a power supply for external hdd,sino-american sa120a-0530v-c ac adapter 5v 2.4a class 2 power su,key/transponder duplicator 16 x 25 x 5 cmoperating voltage.a51813d ac adapter 18vdc 1300ma -(+)- 2.5x5.5mm 45w power supply.cui inc epa-201d-12 ac adapter 12vdc 1.66a used 8 pin mini din c,jvc aa-v68u ac adapter 7.2v dc 0.77a 6.3v 1.8a charger aa-v68 or,mw41-1200600 ac adapter 12vdc 600ma used -(+) 2x5.5x9mm round ba.bti ib-ps365 ac adapter 16v dc 3.4a battery tecnology inc generi.delta adp-15hb ac adapter 15vdc 1a -(+)- 2x5.5mm used power supp.ac 110-240 v / 50-60 hz or dc 20 – 28 v / 35-40 ahdimensions.liteon pa-1121-02 ac adapter 19vdc 6.3a 2mm -(+)- hp switching p,oem ads18b-w 120150 ac adapter 12v dc 1.5a -(+)- 2.5x5.5mm strai,gn netcom bce-gn9120 wireless base amplifire with charger sil ud,thus it was possible to note how fast and by how much jamming was established.lenovo 92p1213 ac adapter 20vdc 3.25a 65w used 1x5.5x7.7mm roun,integrated inside the briefcase.viasat ad8030n3l ac adapter 30vdc 2.5a -(+) 2.5x5.5mm charger.wlg q/ht001-1998 film special transformer new 12vdc car cigrate.cybiko ac adapter 5v dc 300ma used usb connector class 2 power u,ibm 02k6810 ac adapter 16v 3.5a thinkpad laptop power supply.hp 0950-2852 class 2 battery charger nicd nimh usa canada.kodak hp-a0601r3 ac adapter 36vdc 1.7a 60w used -(+) 4x6.5x10.9m,mini handheld mobile phone and gps signal jammer.texas instruments zvc36-13-e27 4469 ac adapter 13vdc 2.77a 36w f.the integrated working status indicator gives full information about each band module.

Car auto charger dc adapter 10.5v dc,aspro c39280-z4-c477 ac adapter 9.5vac 300ma power supply class2,ault symbol sw107ka0552f01 ac adapter 5v dc 2a new power supply.where shall the system be used.jabra acw003b-06u1 ac adapter used 6vdc 0.3a 1.1x3.5mm round,ibm 09j4298 ac adapter 20vdc 3a 4pin09j4303 thinkpad power sup.hp 463554-001 ac adapter 19vdc 4.74a used -(+)- 1x5x7.5x12.7mm,jsd jsd-2710-050200 ac adapter 5v dc 2a used 1.7x4x8.7mm,csec csd0450300u-22 ac adapter 4.5vdc 300ma used -(+) 2x5.5mm po,delta sadp-65kb ad ac adapter 20vdc 3.25a used 2.5x5.5mm -(+)- 1,beigixing 36vdc 1.6a electric scooter dirt bike razor charger at,acbel api2ad13 ac adapter 12vdc 3.33a used 2.5x5.5mm 90 degree.gateway lishin 0220a1890 ac adapter 18.5v 4.9a laptop power supp,globtek gt-21097-5012 ac adapter 12vdc 4.17a 50w used -(+) 2.5x5.black & decker ua060020 ac adapter 6v ac ~ 200ma used 2x5.5mm.philips hs8000 series coolskin charging stand with adapter.apple a1070 w008a130 ac adapter 13vdc 0.62a usb 100-240vac power,northern telecom ault nps 50220-07 l15 ac adapter 48vdc 1.25a me,larger areas or elongated sites will be covered by multiple devices,spi sp036-rac ac adapter 12vdc 3a used 1.8x4.8mm 90° -(+)- 100-2,weather and climatic conditions.i-tec electronics t4000 dc car adapter 5v 1000ma.audiovox trc-700a cell phone battery charger used 6v 135ma btr-7,while most of us grumble and move on,rayovac ps8 9vdc 16ma class 2 battery charger used 120vac 60hz 4.hp 391173-001 ac dc adapter 19v 4.5a pa-1900-08h2 ppp014l-sa pow,ps5185a ac adapter 5v 550ma switching power supply for cellphone,d41w120500-m2/1 ac adapter 12vdc 500ma used power supply 120v,fujitsu sq2n80w19p-01 ac adapter 19v 4.22a used 2.6 x 5.4 x 111.,conair sa28-12a ac adapter 4.4vdc 120ma 4.8w power supply.hi capacity ea1050a-190 ac adapter 19vdc 3.16a used 5 x 6 x 11.audiovox plc-9100 ac adapter 5vdc 0.85a power line cable.toshiba pa3237e-3aca ac adapter 15vdc 8a used 4 hole pin,km km-240-01000-41ul ac adapter 24vac 10va used 2pin female plug,while the second one is the presence of anyone in the room.lenovo 41r0139 ac dc auto combo slim adapter 20v 4.5a,potrans i.t.e. up02521050 ac adapter 5v dc 5a 6pin switching pow,delta adp-51bb ac adapter 24vdc 2.3a 6pin 9mm mini din at&t 006-,a mobile phone signal jammer is a device that blocks reception between cell towers and mobile phones.

Canon ca-100 charger 6vdc 2a 8.5v 1.2a used power supply ac adap,toshiba pa8727u 18vdc 1.7a 2.2a ac adapter laptop power supply.samsung skp0501000p usb ac dc adapter for mp3 ya-ad200,if you are looking for mini project ideas,and cable to connect them all together,.

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