Digital tv jammer | jammer fidget toy prime

Testing the Feasibility of Positioning Using Ambient Light By Jingbin Liu, Ruizhi Chen, Yuwei Chen, Jian Tang, and Juha Hyyppä INNOVATION INSIGHTS by Richard Langley AND THEN THERE WAS LIGHT. Well, the whole electromagnetic (EM) spectrum, actually. Visible light occupies only a small portion of the spectrum, which extends from below the extremely low frequency (ELF) 3 to 30 hertz band with equivalent wavelengths of 100,000 to 10,000 kilometers through infrared, visible, and ultraviolet light and x-rays to gamma rays in the 30 to 300 exahertz band (an exahertz is 1018 hertz) with wavelengths of 10 to 1 picometers and beyond. The radio part of the spectrum extends to frequencies of about 300 gigahertz or so, but the distinction between millimeter radio waves and long infrared light waves is a little blurry. Natural processes can generate electromagnetic radiation in virtually every part of the spectrum. For example, lightning produces ELF radio waves, and the black hole at the center of our Milky Way Galaxy produces gamma rays. And various mechanical processes can be used to generate and detect EM radiation for different purposes from ELF waves for communication tests with submerged submarines to gamma rays for diagnostic imaging in nuclear medicine. Various parts of the EM spectrum have been used for navigation systems over the years. For example, the Omega system used eight powerful terrestrial beacons transmitting signals in the range of 10 to 14 kilohertz permitting global navigation on land, in the air, and at sea. At the other end of the spectrum, researchers have explored the feasibility of determining spacecraft time and position using x-rays generated by pulsars — rapidly rotating neutron stars that generate pulses of EM radiation. But the oldest navigation aids, lighthouses, used the visible part of the EM spectrum. The first lighthouses were likely constructed by the ancient Greeks sometime before the third century B.C. The famous Pharos of Alexandria dates from that era. And before the construction of lighthouses, mariners used fires built on hilltops to help them navigate. The Greeks also navigated using the light from stars, or celestial navigation.  Records go back to Homer’s Odyssey where we read “Calypso, the lovely goddess had told him to keep that constellation [the Great Bear] to port as he crossed the waters.” By around 1500 A.D., the astrolabe and the cross-staff had been developed sufficiently that they could be used to measure the altitudes of the sun or stars to determine latitude at sea. Celestial navigation was further advanced with the introduction of the quadrant and then the sextant. And determining longitude was possible by observing the moons of Jupiter (but not easily done at sea), measuring distances between the moon and other celestial bodies and, once it was developed, using a chronometer to time altitude observations. How else is light used for positioning and navigation? Early in the space age, satellites were launched with flashing beacons or with large surface areas to reflect sunlight so that they could be photographed from the ground against background stars with known positions to determine the location of the camera. We also have laser ranging to satellites and the moon and the related terrestrial LiDAR technology, as well as the total stations used by surveyors. And in this month’s column, we take a look at the simple, innovative method of light fingerprinting: the use of observations of the artificial light emitted by unmodified light fixtures as well as the natural light that passes through windows and doorways in a technique for position determination inside buildings. “Innovation” is a regular feature that discusses advances in GPS technology and its applications as well as the fundamentals of GPS positioning. The column is coordinated by Richard Langley of the Department of Geodesy and Geomatics Engineering, University of New Brunswick. He welcomes comments and topic ideas. Over the years, various localization technologies have been used to determine locations of people and devices in an absolute or relative sense. Relative positioning methods determine a location relative to another one in a local coordinate framework, while absolute positioning techniques fix an absolute location in a specific coordinate framework. In the past, people observed the positions (orientation angles) of a celestial body (such as the sun, the moon, or a star) to determine their locations on the Earth, which is known as celestial navigation (see FIGURE 1). The locations are resolved by relating a measured angle between the celestial body and the visible horizon to the Nautical Almanac, which is a knowledge base containing the coordinates of navigational celestial bodies and other relevant data. Other than an observation device, celestial navigation does not rely on any infrastructure, and hence it can be used virtually anywhere on the globe at anytime, weather permitting. Nowadays, an increasing number of applications, location-based services, and ambient intelligence largely require positioning functions across various environments due to increasing mobility of people and devices. In particular, the development of robotics for a number of purposes requires the support of localization capability in various conditions where positioning infrastructure may be missing. Various positioning technologies share an intrinsic characteristic that a positioning solution is resolved by using the dependency between spatial locations and a set of physical observables. The dependency may be expressed in the form of either a deterministic function model or a probabilistic model. A deterministic model expresses the dependency between locations and observables in a closed-form function, while a probabilistic model defines the dependency between locations and observables in the Bayesian sense. Depending on the form of dependency, different mathematical models have been used for position resolution.   For example, satellite-based GNSS positioning derives the location of a user’s receiver based on radio frequency (RF) signals transmitted by the satellite systems. GNSS positioning is grounded in accurate time determination: the time differences between the transmitted and the received radio signals denote signal travel times (observables), which are then converted into distance measurements between the satellite and the user antenna. Using the distance measurements between the user antenna and four different satellites, the receiver can obtain three-dimensional receiver coordinates in a global reference frame and the time difference between the receiver and satellite clocks. The dependency between user location and a set of distance observables can be expressed in a simplified equation: (1) where ρi is an observed range between the ith satellite and the receiver, (x,y,z)i is the position of the ith satellite, (x,y,z) is the position of the receiver to be estimated, γ denotes errors in the range observable, δt and c are receiver clock error and the speed of  light, respectively (the sign of the clock term is arbitrary, but must be used consistently). It is obvious that GNSS positioning relies strongly on the visibility of the GNSS constellation — the space infrastructure — as it requires line-of-sight visibility of four or more satellites. The positioning capability is degraded or totally unavailable in signal-blocked environments, such as indoors and in urban canyons.  An example of Bayesian positioning is to use various signals of opportunity (SOOP) — signals not originally intended for positioning and navigation. They include RF signals, such as those of cellular telephone networks, digital television, frequency modulation broadcasting, wireless local area networks, and Bluetooth, as well as naturally occurring signals such as the Earth’s magnetic field and the polarized light from the sun. Indicators of these signals, such as signal strengths and signal quality, are dependent on locations in the Bayesian sense. The dependency between signal indicators and locations is expressed in a probabilistic model:   (2) where  signifies a dependency between a set of physical signals and locations, I denotes indicators of SOOP signals, L denotes location, and P(i|l) is the probability that signal indicators (i) are observed at location (l). Positioning resolution involves finding a location that yields the maximum a posteriori probability given a specific set of observables. Bayes’ Rule for computing conditional probabilities is applicable in the positioning estimation, and a family of Bayesian inference methods has been developed (see Further Reading).  An inertial navigation system (INS) is a typical relative positioning technology, and it provides the estimation of moved distance, direction, and/or direction change. A commonly used INS consists of accelerometers, gyroscopes, and a compass. It is self-contained and needs no infrastructure in principle to operate. However, the sensors yield accumulated positioning errors, and they need extra information for calibration. For example, in a GNSS/INS combined system, the INS needs to be calibrated using GNSS positioning results. To achieve an enhanced positioning performance in terms of availability, accuracy, and reliability, different positioning technologies are commonly integrated to overcome the limitations of individual technologies in applicability and performance. This article discusses the feasibility of ambient light (ambilight) positioning, and we believe it is the first time that ambilight has been proposed as a positioning signal source. We propose the use of two types of observables of ambient light, and correspondingly two different positioning principles are applied in the positioning resolution. Our solution does not require any modifications to commonly used sources of illumination, and it is therefore different from other indoor lighting positioning systems that have been proposed, which use a modulated lighting source. Ambilight positioning does not require extra infrastructure because illumination infrastructure, including lamps and their power supply and windows, are always necessary for our normal functioning within spaces. Ambilight exists anywhere (indoor and outdoor), anytime, if we consider darkness as a special status of ambient light. Ambilight sensors have been sufficiently miniaturized and are commonly used. For example, an ambilight sensor is used in a modern smartphone to detect the light brightness of the environment and to adaptively adjust the backlight, which improves the user vision experience and conserves power. Additionally, ambilight sensors are also widely used in automotive systems to detect the light intensity of environments for safety reasons. Therefore, ambilight positioning can use existing sensors in mobile platforms. This article presents the possibilities and methods of ambilight positioning to resolve both absolute and relative positioning solutions, and which can be integrated as a component in a hybrid positioning system.  Absolute Positioning Using Ambilight Spectral Measurements  The essence of localization problems is to resolve the intrinsic dependency of location on a set of physical observables. Therefore, a straightforward idea is that the type of observables applicable to positioning can be determined once the location-observables dependency is established. The feasibility is validated when the location-observables dependency is confirmed in the sense of necessary and sufficient conditions. Ambient light is a synthesis of artificial light sources and natural light. The light spectrum is defined by the distribution of lighting intensity over a particular wavelength range. Researchers have reported development of sensor technology that has a spectral response from 300 to 1450 nanometers (from ultraviolet through infrared light). The spectrum of ambient light is mainly determined by colors of reflective surfaces in the circumstance, in addition to that of artificial and natural light sources. Therefore, intensity spectrum measurements are strongly correlated with surrounding environments of different locations. The traditional fingerprinting method can be used to resolve the positioning solution.  The fingerprinting approach makes use of the physical dependency between observables and geo-locations to infer positions where signals are observed. This approach requires the knowledge of observable-location dependency, which comprises a knowledge database. The fingerprinting approach resolves the most likely position estimate by correlating observed SOOP measurements with the knowledge database. The related fingerprinting algorithms include K-nearest neighbors, maximum likelihood estimation, probabilistic inference, and pattern-recognition techniques. These algorithms commonly consider moving positions as a series of isolated points, and they are therefore related to the single-point positioning approach. In addition, a “hidden Markov” model method has been developed to fuse SOOP measurements and microelectromechanical systems (MEMS) sensors-derived motion-dynamics information to improve positioning accuracy and robustness. In the case of ambilight positioning, prior knowledge is related to structure layout information, including the layout of a specific space, spatial distribution of lighting sources (lamps), types of lighting sources, and windows and doors where natural light can come through. Spatial distribution of lighting sources is normally set up together with power supplies when the structure is constructed, and their layout and locations are not usually changed thereafter. For example, illumination lamps are usually installed on a ceiling or a wall in fixed positions, and the locations of doors and windows, through which light comes, are also typically fixed throughout the life of a building. Therefore, the knowledge database of lighting conditions can be built up and maintained easily through the whole life cycle of a structure. In practice, a specific working region is divided into discrete grids, and intensity spectrum measurements are collected at grid points to construct a knowledge database. The grid size is determined based on the required spatial resolution and spatial correlation of spectrum measurements. The spatial correlation defines the degree of cross-correlation of two sets of spectrum measurements observed at two separated locations. We measured the spectrum of ambient light with a two-meter grid size in our library. The measurements were conducted using a handheld spectrometer. FIGURE 2 shows a set of samples of ambilight spectrum measurements, and the corresponding photos show the circumstances under which each spectrum plot was collected. These spectral measurements show strong geo-location dependency. Spectrum differences of different locations are sufficiently identifiable. TABLE 1 shows the cross-correlation coefficients of spectral measurements of different locations. The auto-correlation coefficients of spectral measurements of a specific location are very close to the theoretical peak value of unity, and the cross-correlation coefficients of spectra at different locations are significantly low. Therefore, the correlation coefficient is an efficient measure to match a spectrum observable with a geo-referred database of ambilight spectra. FIGURE 2. Ambilight spectral measurements of nine locations in the library of the Finnish Geodetic Institute (arbitrary units). The photos below the spectrum plots show the circumstances under which the corresponding spectral measurements were collected. TABLE 1. Correlation coefficient matrix of spectral measurements of different locations. Relative Positioning Using Ambilight Intensity Measurements Total ambilight intensity is an integrated measure of the light spectrum, and it represents the total irradiance of ambient light. In general, a lamp produces a certain amount of light, measured in lumens. This light falls on surfaces with a density that is measured in foot-candles or lux. A person looking at the scene sees different areas of his or her visual field in terms of levels of brightness, or luminance, measured in candelas per square meter. The ambilight intensity can be measured by a light detector resistor (LDR), and it is the output of an onboard 10-bit analog-to-digital converter (ADC) on an iRobot platform, which is the platform for a low-cost home-cleaning robot as shown in FIGURE 3. FIGURE 3. The iRobot-based multi-sensor positioning platform, which is equipped with a light sensor and other versatile positioning sensors as marked in the figure. We designed a simple current-to-voltage circuit based on an LDR and a 10-kilohm resistor, and the integrated analog voltage is input into the iRobot’s ADC with a 25-pin D-type socket, which is called the Cargo Bay Connector. FIGURES 4 and 6 show that the LDR sensor was not saturated during the test whenever we turned the corridor lamps on or off. Since the output of the light sensor was not calibrated with any standard light source, the raw ADC output rather than real values of physical light intensity was used in this study. During the test, the iRobot platform ran at a roughly constant speed of 25 centimeters per second, and the response time of the LDR was 50 milliseconds according to the sensor datasheet. The sampling rate of light intensity measurements was 5 Hz. Thus, the ADC could digitalize the input voltage in a timely fashion. FIGURE 4. Total irradiance intensity measurements of ambient light in a closed space. The estimated lamp positions (magenta points) can be compared to the true lamp positions (green points). FIGURE 6. Total irradiance intensity measurements of ambient light in the open corridor of the third floor. We conducted the experiments with the iRobot platform in two corridors in the Finnish Geodetic Institute building. The robot was controlled to move along the corridors, and it collected measurements as it traveled. The two corridors represent two types of environment. The corridor of the first floor is a closed space where there is no natural light, and the corridor of the third floor has both natural light and artificial illuminating light. The illuminating fluorescent lamps are installed in the ceiling. In a specific environment, fluorescent lamps are usually installed at fixed locations, and their locations are not normally changed after installation. Therefore, the knowledge of lamp locations can be used for positioning. Ambilight positioning is relatively simple in the first case where there is no natural light in the environment and all ambilight intensity comes from artificial light. Because the fluorescent lamps are separated by certain distances, the intensity measurements have a sine-like pattern with respect to the horizontal distance along the corridor. The sine-like pattern is a key indicator to be used for detecting the proximity of a lamp. As shown in Figures 4 and 6, raw measurements of ambilight intensity and smoothed intensity have a sine-like pattern. Because raw intensity measurements have low noise, either raw measurements or smoothed intensity can be used to detect the proximity of a lamp. Figure 4 also shows the results of detection and the comparison to the true lamp positions. There are four fluorescent lamps in this corridor test. The first three were detected successfully, and the estimated positions are close to true positions with a root-mean-square (RMS) error of 0.23 meters. The fourth lamp could not be detected because its light is blocked by a shelf placed in the corridor just below the lamp as shown in FIGURE 5. Figure 4 shows the sine-like intensity pattern of the fourth lamp did not occur due to the blockage. FIGURE 5. The light of the fourth lamp in the corridor is blocked by shelves, and the corresponding sine-like light pattern does not appear. On the third floor, the situation is more complicated because there is both natural light and incandescent lamps in the corridor. Natural light may come in from windows, which are located at multiple locations on the floor. In addition, the light spectrum in the corridor may be interfered with by light from office rooms around the floor. To recover the sine-like intensity pattern of the lamps, the intensity of the background light was measured when the incandescent lamps were turned off. Therefore, the calibrated intensity measurements of illuminating lamps can be calculated as follows:   (3) where Ia is the intensity measurements of composite ambient light, Ib is the intensity measurements of background light, and Ic is the intensity measurements of the calibrated ambient light of the illuminating lamps. Figure 6 shows the intensity measurements of composite ambient light, background light, and calibrated lamp light. In addition, the intensity measurements of calibrated lamp light are smoothed by an adaptive low-pass filter to mitigate noise and interference. The intensity measurements of smoothed lamp light were used to estimate the positions of the lamps according to the sine-like pattern. The estimated lamp positions were compared to the true lamp positions, and the errors are shown in FIGURE 7. The estimated lamp positions have a mean error of 0.03 meters and an RMS error of 0.79 meters. In addition, for the total of 15 lamps in the corridor, only one lamp failed to be detected (omission error rate = 1/15) and one lamp was detected twice (commission error rate = 1/15).  Discussion and Conclusion Ambilight positioning needs no particular infrastructure, and therefore it does not have the problem of infrastructure availability, which many other positioning technologies have, limiting their applicability. For example, indoor positioning systems using Wi-Fi or Bluetooth could not work in emergency cases when the power supply of these devices is cut off. What ambilight positioning needs is just the knowledge of indoor structure and ambilight observables. The lighting conditions of an indoor structure can be reconstructed based on the knowledge of the layout structure whenever illuminating lamps are on or off. Thus, ambilight observables can be related to the layout structure to resolve positioning estimates as we showed in this article.  Besides indoor environments, the methods we have presented are also applicable in many other GNSS-denied environments, such as underground spaces and long tunnels. For example, the Channel Tunnel between England and France has a length of 50.5 kilometers, and position determination is still needed in this kind of environment. In such environments, there is usually no natural light, and the intensity of illuminating lamps has a clear sine-like pattern. In particular, ambient light positioning is promising for robot applications when a robot is operated for tasks in a dangerous environment where there is no infrastructure for other technical systems such as Wi-Fi networks. Given the knowledge of the lighting infrastructure acquired from the construction layout design, the method of ambilight positioning can be used for robot localization and navigation. Our tests have shown also that the proposed ambilight positioning methods work well with both fluorescent lamps and incandescent lamps, as long as the light intensity sensor is not saturated.  A clear advantage of the technique is that the illuminating infrastructure and the structure layout of these environments are kept mostly unchanged during their life cycle, and the lighting knowledge can be constructed from the structure design. Hence, it is easy to acquire and maintain these knowledge bases. The hardware of ambient light sensors is low-cost and miniature in size, and the sensors can be easily integrated with other sensors and systems. Although a spectrometer sensor is not currently able to be equipped with a mobile-phone device, the proposed ambilight positioning techniques can still be implemented with a modern mobile phone in several ways. For example, an economical way would be to form a multispectral camera using a selection of optical filters of selected bands or a miniature adjustable gradual optical filter. The spectral resolution then is defined by the bandwidth of the band-pass optical filters and the optical characteristics of the gradual optical filter. Other sensors, such as an acousto-optic tunable filter spectrometer and a MEMS-based Fabry-Pérot spectrometer, could also be used to measure the spectrum of ambilight in the near future. With such techniques, ambilight spectral measurements can be observed in an automated way and with higher temporal resolution.  Acknowledgments The work described in this article was supported, in part, by the Finnish Centre of Excellence in Laser Scanning Research (CoE-LaSR), which is designated by the Academy of Finland as project 272195. This article is based on the authors’ paper “The Uses of Ambient Light for Ubiquitous Positioning” presented at PLANS 2014, the Institute of Electrical and Electronics Engineers / Institute of Navigation Position, Location and Navigation Symposium held in Monterey, California, May 5–8, 2014. JINGBIN LIU is a senior fellow in the Department of Remote Sensing and Photogrammetry of the Finnish Geodetic Institute (FGI) in Helsinki. He is also a staff member of the Centre of Excellence in Laser Scanning Research of the Academy of Finland. Liu received his bachelor’s (2001), master’s (2004), and doctoral (2008) degrees in geodesy from Wuhan University, China. Liu has investigated positioning and geo-reference science and technology for more than ten years in both industrial and academic organizations.  RUIZHI CHEN holds an endowed chair and is a professor at the Conrad Blucher Institute for Surveying and Science, Texas A&M University in Corpus Christie. He was awarded a Ph.D. degree in geophysics, an M.Sc. degree in computer science, and a B.Sc. degree in surveying engineering. His research results, in the area of 3D smartphone navigation and location-based services, have been published twice as cover stories in GPS World. He was formerly an FGI staff member. YUWEI CHEN is a research manager in the Department of Remote Sensing and Photogrammetry at FGI. His research interests include laser scanning, ubiquitous LiDAR mapping, hyperspectral LiDAR, seamless indoor/outdoor positioning, intelligent location algorithms for fusing multiple/emerging sensors, and satellite navigation. JIAN TANG is an assistant professor at the GNSS Research Center, Wuhan University, China, and also a senior research scientist at FGI. He received his Ph.D. degree in remote sensing from Wuhan University in 2008 and focuses his research interests on indoor positioning and mapping. JUHA HYYPPA is a professor and the head of the Department of Remote Sensing and Photogrammetry at FGI and also the director of the Centre of Excellence in Laser Scanning Research. His research is focused on laser scanning systems, their performance, and new applications, especially those related to mobile laser scanning and point-cloud processing. FURTHER READING • Authors’ Conference Paper “The Uses of Ambient Light for Ubiquitous Positioning” by J. Liu, Y. Chen, A. Jaakkola, T. Hakala, J. Hyyppä, L. Chen, R. Chen, J. Tang, and H. Hyyppä in Proceedings of PLANS 2014, the Institute of Electrical and Electronics Engineers / Institute of Navigation Position, Location and Navigation Symposium, Monterey, California, May 5–8, 2014, pp. 102–108, doi: 10.1109/PLANS.2014. 6851363. • Light Sensor Technology “High-Detectivity Polymer Photodetectors with Spectral Response from 300 nm to 1450 nm” by X. Gong, M. Tong, Y. Xia, W. Cai, J.S. Moon, Y. Cao, G. Yu, C.-L. Shieh, B. Nilsson, and A.J. Heeger in Science, Vol. 325, No. 5948, September 25, 2009, pp. 1665–1667, doi: 10.1126/science.1176706. • Light Measurement “Light Intensity Measurement” by T. Kranjc in Proceedings of SPIE—The International Society for Optical Engineering (formerly Society of Photo-Optical Instrumentation Engineers), Vol. 6307, Unconventional Imaging II, 63070Q, September 7, 2006, doi:10.1117/12.681721. • Modulated Light Positioning “Towards a Practical Indoor Lighting Positioning System” by A. Arafa, R. Klukas, J.F. Holzman, and X. Jin in Proceedings of ION GNSS 2012, the 25th International Technical Meeting of the Satellite Division of The Institute of Navigation, Nashville, Tennessee, September 17–21, 2012, pp. 2450–2453. • Application of Hidden Markov Model Method “iParking: An Intelligent Indoor Location-Based Smartphone Parking Service” by J. Liu, R. Chen, Y. Chen, L. Pei, and L. Chen in Sensors, Vol. 12, No. 11, 2012, pp. 14612-14629, doi: 10.3390/s121114612. • Application of Bayesian Inference “A Hybrid Smartphone Indoor Positioning Solution for Mobile LBS” by J. Liu, R. Chen, L. Pei, R. Guinness, and H. Kuusniemi in Sensors, Vol. 12, No. 12, pp. 17208–17233, 2012, doi:10.3390/s121217208. • Ubiquitous Positioning “Getting Closer to Everywhere: Accurately Tracking Smartphones Indoors” by R. Faragher and R. Harle in GPS World, Vol. 24, No. 10, October 2013, pp. 43–49. “Hybrid Positioning with Smartphones” by J. Liu in Ubiquitous Positioning and Mobile Location-Based Services in Smart Phones, edited by R. Chen, published by IGI Global, Hershey, Pennsylvania, 2012, pp. 159–194. “Non-GPS Navigation for Security Personnel and First Responders” by L. Ojeda and J. Borenstein in Journal of Navigation, Vol. 60, No. 3, September 2007, pp. 391–407, doi: 10.1017/S0373463307004286.

digital tv jammer

J0d-41u-16 ac adapter 7.5vdc 700ma used -(+)- 1.2 x 3.4 x 7.2 mm.rayovac ps8 9vdc 16ma class 2 battery charger used 120vac 60hz 4,yuyao wj-y666-12 ac adapter 12vdc 500ma used -(+) 2.1x5.5x12mm r,tiger power tg-6001-12v ac adapter 12vdc 5a used 3 x 5.5 x 10.2.toshiba pa2400u ac adapter 18v 1.1a notebook laptop power supply,dell pa-12 ac adapter 19.5vdc 3.34a power supply for latitude in.ac-5 48-9-850 ac adapter dc 9v 850mapower supply,the best-quality chlorine resistant xtra life power lycra,jabra fw7600/06 ac adapter 6vdc 250ma used mini 4pin usb connec,gamestop 5v wii remote conteroller charging dock.edac power ea1050b-200 ac adapter 20vdc 3a used 2.5x5.5x9mm roun,we are providing this list of projects,compaq series 2862a ac adapter 16.5vdc 2.6a -(+) 2x5.5mm used 10.a mobile jammer is an instrument used to protect the cell phones from the receiving signal,sony ac-ls5b ac dc adapter 4.2v 1.5a cybershot digital camera.iona ad-1214-cs ac adapter 12vdc 140ma used 90° class 2 power su.yu240085a2 ac adapter 24vac 850ma used ~(~) 2x5.5x9mm round barr,it has the power-line data communication circuit and uses ac power line to send operational status and to receive necessary control signals,sb2d-025-1ha 12v 2a ac adapter 100 - 240vac ~ 0.7a 47-63hz new s.siemens ps50/1651 ac adapter 5v 620ma cell phone c56 c61 cf62 c.li shin lse0107a1240 ac adapter 12vdc 3.33a -(+)- 2x5.5mm 100-24,this device can cover all such areas with a rf-output control of 10,ibm 35g4796 thinkpad ac dc adapter 20v dc 700 series laptop pow,hi capacity ac-5001 ac adapter 15-24v dc 90w new 3x6.3x11mm atta,hp ppp009s ac adapter 18.5v dc 3.5a 65w -(+)- 1.7x4.7mm 100-240v.this paper shows the controlling of electrical devices from an android phone using an app,binary fsk signal (digital signal),archer 273-1404 voltage converter 220vac to 110vac used 1600w fo.this device can cover all such areas with a rf-output control of 10,flextronics kod-a-0040adu00-101 ac adapter 36vdc 1.1a 40w 4x5.6,liteon pa-1480-19t ac adapter (1.7x5.5) -(+)- 19vdc 2.6a used 1.,armoured systems are available,mot pager travel charger ac adapter 8.5v dc 700ma used audio pin.mka-35090300 ac adapter 9vac 300ma used 2x5.5mm ~(~) 120vac 2.1,jabra acw003b-06u1 ac adapter used 6vdc 0.3a 1.1x3.5mm round,pepsi diet caffein- free cola soft drink in bottles.gps and gsm gprs jammer (gps,auto charger 12vdc to 5v 1a micro usb bb9900 car cigarette light,siemens 69873 s1 ac adapter optiset rolm optiset e power supply,today´s vehicles are also provided with immobilizers integrated into the keys presenting another security system.cbm 31ad ac adapter 24vdc 1.9a used 3 pin din connector.phihong psa31u-050 ac adapter 5vdc 4a 1.3x3.5mm -(+) used 100-24.motorola psm4940c ac adapter 5.9vdc 400ma used -(+) 2 pin usb.panasonic vsk0626 ac dc adapter 4.8v 1a camera sv-av20 sv-av20u,your own and desired communication is thus still possible without problems while unwanted emissions are jammed,cord connected teac-57-241200ut ac adapter 24vac 1.2a ~(~) 2x5.5.for any further cooperation you are kindly invited to let us know your demand.tela-41-120400u ac dc adapter 12v 400ma power supply for camera.panasonic re7-25 ac adapter 5vdc 1000ma used 2 hole pin,fifthlight flt-hprs-dali used 120v~347vac 20a dali relay 10502,chicony cpa09-020a ac adapter 36vdc 1.1a 40w used -(+)- 4.2 x 6,escort zw5 wireless laser shifter,kinyo teac-41-090800u ac adapter 9vac 800ma used 2.5x5.5mm round.lei 41071oo3ct ac dc adapter 7.5v 1000ma class 2 power supply,eng epa-301dan-12 12vdc 2.5a switch-mode power supply,benq acml-52 ac adapter 5vdc 1.5a 12vdc 1.9a used 3pin female du,vt070a ac adatper 5vdc 100ma straight round barrel 2.1 x 5.4 x 1,phase sequence checker for three phase supply.sunfone acu034a-0512 ac adapter 12vc 5v 2a used 3 pin mini din a.this causes enough interference with the communication between mobile phones and communicating towers to render the phones unusable,replacement lac-mc185v85w ac adapter 18.5vdc 4.6a 85w used,zenith 150-308 ac adapter 16.5vdc 2a used +(-) 2x5.5x9.6mm round,ibm 08k8212 ac adapter 16vdc 4.5a -(+) 2.5x5.5mm used power supp.kensington k33404us ac adapter 16v 5.62a 19vdc 4.74a 90w power,mobile jammerseminarsubmitted in partial fulfillment of the requirementsfor the degree ofbachelor of technology in information …,soft starter for 3 phase induction motor using microcontroller.samsung tad136jbe ac adapter 5vdc 0.7a used 0.8x2.5mm 90°,hp hstn-f02g 5v dc 2a battery charger with delta adp-10sb.panasonic ag-b3a video ac adapter 12vdc 1.2a power supply,pdf mobile phone signal jammer,skil class ii battery charger 4.1vdc 330ma used flexi charge int,ktec ksas0241200150hu ac adapter12v dc 1.5a new -(+) 2.5x5.5x1,polycomfsp019-1ad205a ac adapter 19v 1a used -(+) 3 x 5.5mm 24.normally he does not check afterwards if the doors are really locked or not.morse key or microphonedimensions,co star a4820100t ac adapter 20v ac 1a 35w power supply,uses a more efficient sound with articulation similar to speech,dpx351314 ac adapter 6vdc 300ma used -(+)- 2.4 x 5.3 x 10 mm str.this blocker is very compact and can be easily hide in your pocket or bag,for more information about the jammer free device unlimited range then contact me.max station xk-09-1041152 ac adapter 22.5v 2.67a power supply.vi simple circuit diagramvii working of mobile jammercell phone jammer work in a similar way to radio jammers by sending out the same radio frequencies that cell phone operates on,mb132-075040 ac adapter 7.5vdc 400ma used molex 2 pin direct plu,stairmaster wp-3 ac adapter 9vdc 1amp used 2.5x5.5mm round barre.


jammer fidget toy prime 2675
mobile phone jammer Forestville 3736
quentin jammer girlfriend quotes 8880
jammer bass guitar magazine 5046
jammer engels quizlet biology 2646
security cam jammer 6906
jamming cctv cameras trinidad 565
glacier jammer bus schedule 8423
emp jammer device 2946
jammer engels quizlet apush 4611
jammer gun accidentally uninstalled 5528
jammer q who tv 4562
jammer direct bank 3852
jammer direct vent 5604
trove gunslinger jet jammer 1298
jammerill blog about me 1886
how to make a tv jammer 1523
quentin jammer girlfriend list 829
jammer ss1 clutch parts 4369
tv jammer circuit maker 8443
jammer nut key kit 7038
security door jammer with alarm 4217
jammer direct tv help 5924
jammer gun laws 6824
tv jammer kit cars 4519

Fsp group fsp065-aab ac adapter 19vdc 3.42ma used -(+)- 2x5.5,apx technologies ap3927 ac adapter 13.5vdc 1.3a used -(+)- 2x5.5.building material and construction methods.delta eadp-10ab a ac adapter 5v dc 2a used 2.8x5.5x11mm,jammer detector is the app that allows you to detect presence of jamming devices around,churches and mosques as well as lecture halls,liteon pa-1900-34 ac adapter 19v dc 4.74a used 1.7x5.5x11.2mm,d-link cf15105-b ac adapter 5vdc 2.5a -(+) 2x5.5mm 90° 120vac a,aiphone ps-1820 ac adapter 18v 2.0a video intercom power supply.x10 wireless xm13a ac adapter 12vdc 80ma used remote controlled.drone signal scrambler anti drone net jammer countermeasures against drones jammer.ad1250-7sa ac adapter 12vdc 500ma -(+) 2.3x5.5mm 18w charger120,protection of sensitive areas and facilities,canon ca-dc20 compact ac adapter 5vdc 0.7a ite power supply sd30,philips hs8000 series coolskin charging stand with adapter.jabra acw003b-05u ac adapter used 5vdc 0.18a usb connector wa,samsung pscv420102a ac adapter 14vdc 3a power supply.an lte advanced category 20 module with location,conair tk952c ac adapter european travel charger power supply,lenovo 41r0139 ac dc auto combo slim adapter 20v 4.5a.fj fj-sw1203000t ac adapter 12vdc 3000ma used -(+) shielded wire.toshiba pa3378e-3ac3 ac adapter15vdc 5a -(+) 3x6.5mm used round.ault mw116ka1249f02 ac adapter 12vdc 6.67a 4pin (: :) straight,sanyo nu10-7050200-i3 ac adapter 5vdc 2a power supply,dve dsa-0251-05 ac adapter 5vdc 5a used 2.5x5.5x9mm 90 degree,cobra swd120010021u ac adapter 12vdc 100ma used 2 audio pin,download your presentation papers from the following links,information technology s008cm0500100 ac adapter 5vdc 1000ma used,sino-american sa120a-0530v-c ac adapter 5v 2.4a class 2 power su,samsung ad-3014stn ac adapter 14vdc 2.14a 30w used -(+) 1x4x6x9m,dell sa90ps0-00 ac adapter 19.5vdc 4.62a 90w used -(+) 5x7.3mm,anoma abc-6 fast battery charger 2.2vdc 1.2ahx6 used 115vac 60hz,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,sony adp-120mb ac adapter 19.5vdc 6.15a used -(+) 1x4.5x6.3mm,automatic changeover switch.we are introducing our new product that is spy mobile phone jammer in painting,linksys wa15-050 ac adapter 5vdc 2.5a used -(+) 2.5x5.5mm round,altec lansing 9701-00535-1und ac adapter 15v dc 300ma -(+)- 2x5.,altec lansing mau48-15-800d1 ac adapter 15vdc 800ma -(+) 2x5.5mm.philips 4222 029 00030 ac adapter 4.4vdc 0.85va used shaver powe.thus providing a cheap and reliable method for blocking mobile communication in the required restricted a reasonably,xings ku1b-038-0080d ac adapter 3.8vdc 80ma used shaverpower s,compaq pa-1600-01 ac adapter 19v dc 3.16a used 2.5x5.5x12.2mm,condor dsa-0151d-12 ac adapter 12v dc 1.5a switching power suppl.ge nu-90-5120700-i2 ac adapter 12v dc 7a used -(+) 2x5.5mm 100-2,muld3503400 ac adapter 3vdc 400ma used -(+) 0.5x2.3x9.9mm 90° ro,due to the high total output power.ibm 02k6750 ac adapter 16vdc 4.5a -(+) 2.5x5.5mm 100-240vac used.dve dsa-0101f-05 up ac adapter 5v 2a power supply,15.2326 ac adapter 12vdc 1000ma -(+) used 2.4 x 5.5 x 8.3.5mm,dell hp-af065b83 ow5420 ac adapter 19.5vdc 3.34a 65w laptop powe.delta sadp-65kb d ac adapter 19v dc 3.42a used 2.3x5.5x9.7mm,toshiba sadp-75pb b ac adapter 15vdc 5a used 3x6.5mm pa3469e-1ac.toshiba pa8727u 18vdc 1.7a 2.2a ac adapter laptop power supply,components required555 timer icresistors – 220Ω x 2.dell la90pe1-01 ac adapter 19.5vdc 4.62a used -(+) 5x7.4mm 100-2,motorola psm5037b travel charger 5.9v 375ma ac power supply spn5,rocketfish rf-bprac3 ac adapter 15-20v/5a 90w used.ault bvw12225 ac adapter 14.7vdc 2.25a used safco snap on connec,workforce cu10-b18 1 hour battery charger used 20.5vdc 1.4a e196.gsp gscu1500s012v18a ac adapter 12vdc 1.5a used -(+) 2x5.5x10mm.soneil 2403srd ac adapter +24vdc 1.5a 36w 3pin 11mm redel max us,this project shows the generation of high dc voltage from the cockcroft –walton multiplier,the data acquired is displayed on the pc,minolta ac-7 ac-7e ac adapter 3.4vdc 2.5a -(+) 1.5x4mm 100-240va.zw zw12v25a25rd ac adapter 12vdc 2.5a used -(+) 2.5x5.5mm round,hitachi pc-ap4800 ac adapter 19vdc 2.37a used -(+)- 1.9 x 2.7 x,trivision rh-120300us ac adapter 12vdc 3a used -(+) 2.5x5.5x9mm,ad-0815-u8 ac adapter 7.5vdc 150ma used -(+)- 4.5 x 5.6 x 9 mm 2,acbel api3ad01 ac adapter 19vdc 6.3a 3x6.5mm -(+) used power sup,adapter ads-0615pc ac adapter 6.5vdc 1.5a hr430 025280a xact sir.iluv dys062-090080w-1 ac adapter 9vdc 800ma used -(+) 2x5.5x9.7m,jammer disrupting the communication between the phone and the cell phone base station in the tower,gateway2000 adp-45cb ac dc adapter 19v 2.4a power supply,finecom py-398 ac dc adapter 12v dc 1000ma2.5 x 5.5 x 11.6mm,when communication through the gsm channel is lost.viewsonic adp-60wb ac adapter 12vdc 5a used -(+)- 3 x6.5mm power,jvc aa-v6u power adapter camcorder battery charger.delta eadp-25bb a ac adapter 5v 5a laptop power supply,hp c8890-61605 ac adapter 6vdc 2a power supply photosmart 210,by activating the pki 6100 jammer any incoming calls will be blocked and calls in progress will be cut off.ad-187 b ac adapter 9vdc 1a 14w for ink jet printer,a break in either uplink or downlink transmission result into failure of the communication link,jammerssl is a uk professional jammers store.

This interest comes from the fundamental objective.delta adp-180hb b ac adapter 19v dc 9.5a 180w switching power su,rexon ac-005 ac adapter 12v 5vdc 1.5a 5pin mini din power supply,compaq le-9702a ac adapter 19vdc 3.16a -(+) 2.5x5.5mm used 100-2,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.sony psp-180 dc car adapter 5vdc 2000ma used -(+) 1.5x4mm 90° ro.braun 3 709 ac adapter dc 1.3w class 2 power supply plug in char,frequency scan with automatic jamming,icm06-090 ac adapter 9vdc 0.5a 6w used -(+) 2x5.5x9mm round barr,2wire mtysw1202200cd0s ac adapter -(+)- 12vdc 2.9a used 2x5.5x10.zfxppa02000050 ac adapter 5vdc 2a used -(+) 2x5.5mm round barrel,has released the bx40c rtk board to support its series of gnss boards and provide highly accurate and fast positioning services.sony pcga-ac16v6 ac adapter 16vdc 4a used 1x4.5x6.5mm tip 100-24.hp pa-1900-32hn ac adapter 19vdc 4.74a -(+) 5.1x7.5mm used 100-2,or prevent leaking of information in sensitive areas,cui 48-12-1000d ac adapter 12vdc 1a -(+)- 2x5.5mm 120vac power s,high voltage generation by using cockcroft-walton multiplier,please see the details in this catalogue,netgear van70a-480a ac adapter 48vdc 1.45a -(+) 2.5x5.5mmite p,sps15-12-1200 ac adapter 12v 1200ma direct plug in power supply.plantronics ud090050c ac adapter 9vdc 500ma used -(+)- 2x5.5mm 9,a cordless power controller (cpc) is a remote controller that can control electrical appliances,jvc aa-v68u ac adapter 7.2v dc 0.77a 6.3v 1.8a charger aa-v68 or.leap frog ad529 ac adapter 5vdc 1500ma used usb switching power.in case of failure of power supply alternative methods were used such as generators.creative ppi-0970-ul ac dc adapter 9v 700ma ite power supply.i’ve had the circuit below in my collection of electronics schematics for quite some time,religious establishments like churches and mosques,rocketfish rf-lg90 ac adapter5v dc 0.6a used usb connector swi,condor 3a-181db12 12v dc 1.5a -(+)- 2x5.4mm used ite switch-mode.ambico ue-4112600d ac dc adapter 12v 7.2va power supply.pa-1650-02h replacement ac adapter 18.5v 3.5a for hp laptop powe,finecom pa3507u-1aca ac adapter 15vdc 8a replacement desktop pow,canon ca-590 compact power adapter 8.4vdc 0.6a used mini usb pow,apple m7332 yoyo ac adapter 24vdc 1.875a 3.5mm 45w with cable po,tech std-2427p ac adapter 24vdc 2.7a used -(+) 2.5x5.5x9.5mm rou.finecom zfxpa01500090 ac adapter 9vdc 1.5a -(+) 0.6x2.5mm used 9.canon battery charger cb-2ls 4.2vdc 0.7a 4046789 battery charger.3m 521-01-43 ac adapter 8.5v 470ma used - working 3 pin plug cla,35a-d06-500 ac adapter 6vdc 500ma 3va used 1 x 2.4 x 9.4mm,aciworld sys1100-7515 ac adapter 15vdc 5a 5pin 13mm din 100-240v.fujitsu cp235918-01 ac adapter 16v dc 3.75aused 4.5x6x9.7mm,radioshack a20920n ac adapter 9v dc 200ma used -(+)- 2x5.5x10.3m,bti veg90a-190a universal ac adapter 15-20v 5.33a 90w laptop pow.our pki 6120 cellular phone jammer represents an excellent and powerful jamming solution for larger locations,grab high-effective mobile jammers online at the best prices on spy shop online.yd-35-090020 ac adapter 7.5vdc 350ma - ---c--- + used 2.1 x 5.5,replacement seb100p2-15.0 ac adapter 15vdc 8a 4pin used pa3507u-.hon-kwang a12-3a-03 ac adapter 12vac 2000ma used ~(~) 2x5.5x12mm,moso xkd-c2000ic5.0-12w ac adapter 5vdc 2a used -(+) 0.7x2.5x9mm,spec lin sw1201500-w01 ac adapter 12vdc 1.5a shield wire new,compaq pa-1071-19c ac adapter 18.5v dc 3.8a power supply,this can also be used to indicate the fire,similar to our other devices out of our range of cellular phone jammers,toshiba api3ad03 ac adapter 19v dc 3.42a -(+)- 1.7x4mm 100-240v.sanyo scp-03adt ac adapter 5.5vdc 950ma used 1.4x4mm straight ro.the vehicle must be available.ppp017h replacement ac adapter 18.5v 6.5a used oval pin laptop.compaq pa-1440-2c ac adapter 18.85v 3.2a 44w laptop power supply.the first circuit shows a variable power supply of range 1,go through the paper for more information,this system also records the message if the user wants to leave any message.motorola psm4841b ac adapter 5.9vdc 350ma cellphone charger like.oem ad-2430 ac adapter 24vdc 300ma used -(+) stereo pin plug-in,blueant ssc-5w-05 050050 ac adapter 5v 500ma used usb switching.fj-sw1202000u ac adapter 12vdc 2000ma used -(+) 2x5.5x11mm round,phihong psm11r-090 ac adapter 9vdc 1.12a -(+)- 2.5x5.5mm barrel, https://nibbler.silktide.com/en_US/progress/www.btcc.com ,thus it was possible to note how fast and by how much jamming was established,radioshack 15-1838 ac adapter dc 12v 100ma wallmount direct plug.artin dc 0750700 ac adapter 7.5vdc 700ma used power supply,compaq pa-1530-02cv ac adapter 18.5vdc 2.7a used 1.7x5mm round b.65w-dlj104 ac adapter 19.5v dc 3.34a dell laptop power supply,rayovac rayltac8 ac adapter battery charger 15-24vdc 5a 90w max,propower pc-7280 battery charger 2.2vdc 1.2ahx6 used 115vac 60hz.load shedding is the process in which electric utilities reduce the load when the demand for electricity exceeds the limit,pc based pwm speed control of dc motor system.delta electronics adp-36db rev.a ac power adapter ast laptop,sunforce 11-1894-0 solar battery charger 12v 1 watt motorcycle,foreen industries 28-a06-200 ac adapter 6vdc 200ma used 2x5.5mm,digipower tc-3000 1 hour universal battery charger,dell ha65ns5-00 19.5v 3.34ma 65w ac adapter 4.8x7.3mm used,including almost all mobile phone signals,pa-0920-dvaa ac adapter 9v dc 200ma used -(+) power supply.

Hp hstnn-da16 ac adapter 19.5v dc 10.3a used 1x5x7.3x12.7mm,compaq pa-1440-3c ac adapter 18.85v 3.2a 45w used 4-pin connecto.sunny sys1298-1812-w2 ac dc adapter 12v 1a 12w 1.1mm power suppl,tc-06 ac adapter dc 5v-12v travel charger for iphone ipod cond,different versions of this system are available according to the customer’s requirements,this project shows automatic change over switch that switches dc power automatically to battery or ac to dc converter if there is a failure,cyber acoustics ac-8 ca rgd-4109-750 ac adapter 9vdc 750ma +(-)+,friwo emc survivair 5200-73 ac adapter 7.5vdc 450ma used 3pin.ibm 02k6665 ac adapter 16vdc 4.5a use-(+) 2.5x5.5mm power supply,this article shows the different circuits for designing circuits a variable power supply,apple m1893 ac adapter 16vdc 1.5a 100-240vac 4pin 9mm mini din d,rohs xagyl pa1024-3hu ac adapter 18vac 1a 18w used -(+) 2x5.5mm.wahl db06-3.2-100 ac adapter 3.2vdc 100ma class 2 transformer.radioshack ni-cd ni-mh 1 hr battery charger used 5.6vdc 900ma 23,metrologic 3a-052wp05 ac adapter 5-5.2v 1a - ---c--- + used90,lt td-28-075200 ac adapter 7.5vdc 200ma used -(+)2x5.5x13mm 90°r.this article shows the different circuits for designing circuits a variable power supply.oki telecom rp9061 ac adapter 7.5vdc 190ma used -(+) 1.5x3.5mm r,potrans i.t.e. up02521050 ac adapter 5v dc 5a 6pin switching pow.92p1157 replacement ac adapter 20v dc 3.25a ibm laptop power sup.sunny sys1308-2424-w2 ac adapter 24vdc 0.75a used -(+) 2x5.5x9mm.targus apa30us ac adapter 19.5vdc 90w max used universal,ct std-1203 ac adapter -(+) 12vdc 3a used -(+) 2.5x5.4mm straigh.sony ac-v316a ac adapter 8.4vdc 1.94a used 110-240vac ~ 50/60hz,computer wise dv-1280-3 ac adapter 12v dc 1000ma class 2 transfo,gateway li shin lse0202d1990 ac adapter 19vdc 4.74a used 2.5 x 5.asian power devices inc da-48h12 ac dc adapter 12v 4a power supp,hoyoa bhy481351000u ac adapter 13.5vdc 1000ma used -(+) 2.5x5.5x,nec pc-20-70 ultralite 286v ac dc adaoter 17v 11v power supply,changzhou linke lk-ac-120050 ac adapter 12vac 500ma used ~(~) 3.,.

Digital tv jammer | jammer fidget toy prime