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By Philip Mattos, STMicroelectronics R&D Ltd. A one-chip multiconstellation GNSS receiver, now in volume production, has been tested in severe urban environments to demonstrate the benefits of multiconstellation operation in a consumer receiver. Bringing combined GPS/GLONASS from a few tens of thousands of surveying receivers to many millions of consumer units, starting with satnav personal navigation devices in 2011, followed by OEM car systems and mobile phones, significant shifts the marketplace. The confidence of millions of units in use and on offer should encourage manufacturers of frequency-specific components, such as antennas and SAW filters, to enter volume mode in terms of size and price. One-chip GPS/GLONASS receiver trials in London, Tokyo, and Texas sought to demonstrate that the inclusion of all visible GLONASS satellites in the position solution, in addition to those from GPS, produces much greater availability in urban canyons, and in areas of marginal availability, much greater accuracy. Multi-constellation receivers are needed at the consumer level to make more satellites available in urban canyon environments, where only a partial view of the sky is available and where extreme integrity is required to reject unusable signals, while continuing to operate on other signals deeply degraded by multiple reflection and attenuation. This article briefly outlines the difficulties of integrating a currently non-compatible system (GLONASS), offering an economic solution in the mass market where cost is king, but performance demands in terms of low signal, power consumption, time-to-first-fix, and availability are extreme. While the accuracy achieved is not at survey levels, we deem it sufficient to meet consumer demands even at the worst signal conditions. The aim is to provide improved indoor and urban canyon availability for mass-market GNSS by using all available satellites; in 2011, that requires GLONASS support, as the constellation availability precedes Galileo by around three years. The aim is to overcome the hardware incompatibility issues of GLONASS, that is, its frequency division multiple access (FDMA) signal rather than the code division multiple access format used by GPS, different centre frequency, and different chipping rate, all without adding significantly to the silicon cost of the receiver chipset. This then allows a total satellite constellation of about 50 to be used at present, even before two recently launched Galileo IOV satellites. It is expected that in benign conditions the additional satellites will give little benefit, as availability approaches 100 percent, and accuracy is excellent, with GPS alone. Though dominated by the ionosphere, using seven, eight, or nine satellites in the fix minimises the amount of error that feeds through to the final position. In marginal conditions, where GPS can give a position, but is using 3/4/5 satellites and those are clustered in the narrow visible part of the sky resulting in poor DOP values, the increased number of satellites benefits the accuracy greatly, due to both improved DOP and multipath-error averaging. Limited satellites mean the full multipath errors map into position and are magnified by the DOP. Adding the second constellation means more clear-view satellites for accuracy, more total satellites to minimise the errors, and the errors are less magnified by the geometry due to better DOP. In extreme conditions, where insufficient GPS satellites are seen to give a fix, the additional GLONASS satellites increase the availability to 100 percent (excluding actual tunnels). Availability is a self-enhancing positive feedback loop… if satellites are always tracked, even if rejected on a quality basis by the RAIM/fault detection and exclusion (FDE) algorithms, then they do not need to be reacquired, so become available for use earlier. If position can be maintained, then the code phases for obstructed satellites can continue to be predicted accurately, allowing instant reacquisition after obstruction, and instant use as no code pull-in time is required. Once availability is lost, the reverse applies, as wrong position means worse prediction, longer re-acquisition, and hence again less availability. The extra visible satellites are very significant for the consumer, particularly — as for example with self-assistance where the minimum constellation is five satellites, not three to four — to autonomously establish that all satellites are healthy using receiver-autonomous integrity monitoring (RAIM) methods. Self-assistance has further major benefits for GLONASS, in that no infrastructure is required, so there will be no delay waiting for GLONASS assistance servers to roll out. The GLONASS method of transmitting satellite orbits is also very suitable for the self-assistance algorithm, saving translation into and out of the Kepler format. Significance of Work Previous attempts to characterize the multi-constellation benefits in urban environments have been handicapped by the need to use professional receivers not designed for such signal conditions, and by the need to generate a separate result for each constellation or sacrifice one satellite measurement for clock control. These problems made them unrepresentative of the performance to be expected from the volume consumer device. This new implementation is significant in being a true consumer receiver for high sensitivity, fully integrated both for measurement and for computation. Thus fully realistic trials are reported for the first time. Background The tests were performed on the Teseo-II single chip GNSS receiver (STA-8088). A brief history: our 2009 product Cartesio+ already included GPS/Galileo, and the digital signal processor (DSP) design has been extended to include GLONASS also for Teseo2, the 2010 product. Test results with real signal data through FPGA implementations of the baseband started in late 2009, and with the full product chip in 2010. The architectural design showed that the silicon could be implemented with only small additional silicon area. Changes to the baseband DSP hardware and software were small and were included in the next scheduled upgrade of the chip, Teseo2. The RF chip silicon requires much greater attention, duplicating the intermediate frequency (IF) path and analog-digtal converter (ADC), with additional frequency conversion and a much wider IF filter bandwidth; however, as the RF silicon area is very small in total, even a 30 percent increase here is not a significant percentage increase on the whole chip. As the design is for an integrated single chip system (RF and baseband, from antenna to position, velocity, and timing (PVT) solution), the overall silicon area on a 65-nanometer process is very small. Commercially, it is new to include all three constellations in a single consumer chip. Technically it is new to use a pool of constellation-independent channels for GLONASS, though standard for GPS/Galileo. Achieving this flexibility has also required new techniques to manage differing RF hardware delays, different chipping rates, in addition to the coordinated universal time (UTC) offset and geoid offset problems already well known to the surveying community. It is also very unusual to go direct to a single-chip solution (RF+baseband+CPU) for such a major technology step. The confidence for this step comes from the provenance of the RF and the baseband, the RF being an extension of the STA5630 RF used with Cartesio+, and the baseband being significant but not major modifications of the GPS/Galileo DSP used inside Cartesio+. 5630/Cartesio+ were proven in volume production as separate chips before the single-chip three-constellation chip starts production. The steps forward from the previous generation of hardware are on chip RF, Galileo support, GLONASS support. While Galileo can pass down the existing GPS chain, with appropriate bandwidth changes, additional changes are required for GLONASS: see Figures 1 and 2. Figure 1. RF changes to support GLONASS. Figure 2. Baseband changes to support GLONASS.   In the RF section, the LNA, RF amp, and first mixer are shared by both paths, in order to save external costs and pins for the equipment manufacturer, and also to minimize power consumption. Then the GLONASS signal, now at around 30 MHz, is tapped off into a secondary path shown in brown, mixed down to 8 MHz and fed to a separate ADC and thus to the baseband. In the baseband, an additional pre-conditioning path is provided, again shown in brown, which converts the 8 MHz signal down to baseband, provides anti-jammer notch filters, and reduces the sample rate to the standard 16fo expected by the DSP hardware. The existing acquisition engines and tracking channels can then select whether to take the GPS/Galileo signal, or the GLONASS signal, making the allocation of channels to constellations completely flexible. Less visible but very important to the system performance is the software controlling these hardware resources, first to close tracking loops and take measurements, and secondly the Kalman filter that converts the measurements to the PVT data required by the user. This was all structurally modified to support multiple constellations, rather than simply adding GLONASS, in order that future extensions of the software to other future systems becomes an evolutionary task rather than a major re-write. The software ran on real silicon in 2010, but using signals from either simulator or static roof antennas, where accuracy and availability of GPS alone are so good that there is little room for improvement. In early 2011, prototype satnav hardware using production chips, antennas, and cases became available, making mobile field trials viable. Actual Results Results have already been seen from trials using professional receivers with independent GPS and GLONASS measurements. However, those tests were not representative of the consumer receiver because they are not high sensitivity; because the receivers require enough clean signal to operate a PLL, which is not realistic in a mobile city environment; and because they were creating two separate solutions, thus needing a continuous extra satellite to resolve inter-system time differences. A 2010 simulation of visible satellites in a typical urban canyon of downtown Milan, Italy, produced the results, every minute averaged for a full 24 hours, shown in Table 1. The average number of satellites visible rises from 4.4 with GPS alone, to 7.8 for GPS+GLONASS, with the result that there are then zero no-fix samples. With GPS alone there were 380 no-fix samples, or 26 percent of the time. Table 1. Accuracy and availability of GPS and GPS+GLONASS, averaged over 24 hours. However, availability is not itself sufficient. Having more satellites in the same small piece of sky above the urban canyon may not be sufficient, due to geometric accuracy limitations. To study this, the geometric accuracy represented by the HDOP was also collected, and shows an accuracy 2.5 times better. Previous studies suggested that in the particular cities tested, two to three additional satellites were available, but one of these was wasted on the clock solution. Using the high-sensitivity receiver, we expected four or five extra satellites and none wasted. The actual results far exceeded our expectations. Firstly, many more satellites were seen, as all previous tests and simulations had excluded reflected signals. Having many more signals, the DOP was vastly improved, and the effect of the reflections on accuracy was greatly reduced, both geometrically, and by the ability of the FDE/RAIM algorithms to maintain their stability and down-weight grossly erroneous signals rather than allow them to distort the position. The results presented here are from a fully integrated high-sensitivity receiver optimized to use signals down to very low levels, and to give a solution derived directly from all satellites in view, no matter which constellation. This produces 100 percent availability, and much improved accuracy in the harsh city environment. Availability The use of high-sensitivity receivers, not dependent on phase-locked loops (PLLs) for tracking, produces 100 percent availability in modern cities, even high-rise, due to the reflective nature of modern glass in buildings, even for GPS alone. Thus some other definition of availability is required rather than “four sats available,” such as sats tracked to a certain quality level, resulting in a manageable DOP. Even DOP is difficult to assess, as the Kalman filter gives different weights to each satellite, not considered in the DOP calculation, and also uses historic position and current velocity, in addition to instantaneous measurements, to maintain the accuracy of the fix. Figure 3 shows the availability of tracked satellites in tests in the London City financial district in May 2011. As can be seen, there are generally seven to eight GLONASS satellites and eight to nine GPS satellites, for a total of around 16 satellites. The only period of non-availability was in a true tunnel (Blackfriars Underpass) at around time 156400 seconds. In other urban canyons, around time 158500 and 161300, individual constellations came down to four satellites, but the total never fell below eight. Note this is an old city, mainly stone, so reflections are limited compared with glass/metal buildings. While outside tunnels, availability is 100 percent, this may be limited by DOP or accuracy. As can be seen in Figure 4 on another London test, the GNSS DOP remains below 1, as might be expected with 10–16 satellites, while GPS-only frequently exceeds four, with the effect that any distortions due to reflections and weak signals are greatly magnified, with several excursions over 10. Figure 4. GPS-only versus combined GPS/GLONASS dilution of precision. As the May 2011 tests had not been difficult enough to stress the GPS into requiring GNSS support, a further trial was performed in August 2011. This was in a modern high-rise section of the city, Canary Wharf, shown in Figure 5 on an aerial photograph. In addition to being high-rise, the roads are also very narrow, resulting in very difficult urban canyons. Being a modern section of the city, the buildings are generally reflective glass and metal, rather than stone, testing RAIM and FDE algorithms to the extreme. Figure 5. GPS versus GNSS, London Canary Wharf (click to enlarge.) This resulted in difficulty for the GPS-only solution, shown in green, especially in the covered section of the Docklands station, center-left, lower track. Figure 6 shows the same test data displayed on truth data taken from the ordnance survey vector map data of the roads. Figure 6. GPS versus GNSS, London Canary Wharf, on vector truth (click to enlarge.) The blue GNSS data is then extremely good, especially on the northern (eastbound) part of the loop (UK drives on the left, thus one-way loops are clockwise). Further tests were carried out by ST offices around the world. Figure 7 shows a test in Tokyo, where yellow is the previous generation of chip with no GLONASS, red was Teseo-II with GPS plus GLONASS. Figure 7. Teseo-I (GPS) versus Teseo-II (GNSS) in Tokyo test. Again, here the scenario is not sufficiently challenging to hurt the availability even of GPS alone, but the accuracy is limited. Figure 8 gives some explanation of the accuracy problems, by showing the DOP during the test. It can be seen that Teseo-II DOP was rarely above 2, but the GPS-only version was between 6 and 12 in the difficult northern part of the test, circled for illustration. Figure 8. DOP during Tokyo tests (click to enlarge.) Further Tokyo tests were performed entering the narrower urban canyons in the same test area, shown in Figure 9. Blue is GPS only, red is GPS+GLONASS, and the major improvement is obvious. Figure 9. GPS only (blue) versus GNSS (red), Tokyo. Figure 10 uses the same color scheme to illustrate tests in Dallas, this time with a competitor’s GPS receiver versus Teseo-II configured for GPS+GLONASS, again a huge benefit. Figure 10. GPS only (blue, competitor) versus GNSS (red), Dallas. Other Constellations While Teseo-II hardware supports Galileo, there are no production Galileo satellites available yet (September 2011), so the units in the field do not have Galileo software loaded. However, the Japanese QZSS system has one satellite available, transmitting legacy GPS-compatible signals, SBAS signals, and L1C BOC signals. Teseo-II can process the first two of these, and while SBAS is no benefit in the urban canyon as the problems of reflection and obstruction are local and unmonitored, the purpose of QZSS is to provide a very high-angle satellite, so that it is always available in urban canyons. Figure 11 shows a test in Taipei (Taiwan) using GPS (yellow) versus GPS plus one QZSS satellite in red, with the truth data shown in purple. Figure 11. GPS only (yellow) versus GPS+QZSS(1 sat, red), truth in purple, Taipei (click to enlarge.) Further Work The test environment will be extended to yield quantitative accuracy results for UK tests where we have the vector truth data for the roads. The hardware flexibility will be extended to support Compass and GPS-III (L1-C) signals, in addition to Galileo already supported. Acquisition and tracking of these signals have already been demonstrated using pre-captured off-air samples. In 2010, the Compass spec was not available. Thus the Teseo-II silicon design was oriented to maximum flexibility in terms of different code lengths, such as BOC or BPSK, so that by using software to configure the hardware DSP functions, the greatest chance of compatibility could be achieved. The result was only a marginal success, in that the 1561 MHz frequency of the regional Compass system can only be supported using the flexibility of the voltage-controlled oscillator and PLL, meaning that it cannot be supported at the same time as other constellations. Additionally, the code rate on the regional system is also 2 M chips/second, which is not supported, so is approximated by using alternate chips, producing serious signal loss. So the hooks for Compass are only useful for research and software development, either for a single-constellation system, or using a separate RF front end. The worldwide Compass signal, which is on a GPS/Galileo signal format in both carrier frequency and in code length and rate, will be directly compatible, but is not expected to be fully available until 2020. The city environment testing will be repeated as the Galileo constellation becomes available. With 32 channels, an 11/11/10 split (GPS/Galileo/GLONASS) may be used when all three constellations are full, but for the next few years 14/8/10 satisfies the all-in-view requirements. Conclusions The multi-constellation receiver can include GLONASS FDMA at minimal increased cost, and with its 32 channels tracking up to 22 satellites in a benign environment, even in the harshest city environment sufficient satellites are seen for 100 percent availability and acceptable accuracy. 10–16 satellites were generally seen in the urban canyon tests. The multiplicity of measurements allows RAIM and FDE algorithms to be far more effective in eliminating badly reflected signals, and also minimizes the geometric effects of remaining distortion on the signals retained. Acknowledgments ST GPS products, chipsets, and software, baseband and RF are developed by a distributed team in Bristol, UK (system R&D, software R&D); Milan, Italy (silicon implementation, algorithm modelling and verification); Naples, Italy (software implementation and validation); Catania, Sicily, Italy (Galileo software, RF design and production); and Noida, India (verification and FPGA). The contribution of all these teams to both product ranges is gratefully acknowledged. Philip Mattos received a master’s degree in electronic engineering from Cambridge University, UK, a master’s in telecoms and computer science from Essex University, and an external Ph.D. for his GPS work from Bristol University. He was appointed a visiting professor at the University of Westminster. Since 1989 he has worked exclusively on GPS implementations and associated RF front ends, currently focusing on system-level integrations of GPS, on the Galileo system, and leading the STMicroelectronics team on L1C and Compass implementation, and the creation of generic hardware to handle future unknown systems.

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to 2027 research report by absolute reports published,2100 – 2200 mhz 3 gpower supply.this project uses an avr microcontroller for controlling the appliances,925 to 965 mhztx frequency dcs,radius up to 50 m at signal < -80db in the locationfor safety and securitycovers all communication bandskeeps your conferencethe pki 6210 is a combination of our pki 6140 and pki 6200 together with already existing security observation systems with wired or wireless audio / video links,ac 110-240 v / 50-60 hz or dc 20 – 28 v / 35-40 ahdimensions.kodak vp-09500084-000 ac adapter 36vdc 1.67a used -(+) 6x4.1mm r,zigbee based wireless sensor network for sewerage monitoring.ibm 2684292 ac adapter 15v dc 2.7a used 3x5.5x9.3mm straight,griffin itrip car adapter used fm transmitter portable mp3 playe,sunpower spd-a15-05 ac adapter 5vdc 3a ite power supply 703-191r.siemens ps50/1651 ac adapter 5v 620ma cell phone c56 c61 cf62 c.the next code is never directly repeated by the transmitter in order to complicate replay attacks,but communication is prevented in a carefully targeted way on the desired bands or frequencies using an intelligent control.

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+5vdc 4a 65w used -(+)- 2.5x5.5mm 90° degree,premium power ea1060b ac adapter 18.5v 3.5a compaq laptop power.li shin 0405b20220ac adapter 20vdc 11a -(+) used 5x7.4mm tip i.health o meter adpt25 ac adapter 6v dc 300ma power supply,energizer fm050012-us ac adapter 5v dc 1.2a used 1.7x4x9.7mm rou.navtel car dc adapter 10vdc 750ma power supply for testing times.are freely selectable or are used according to the system analysis,panasonic cf-aa1526 m3 ac adapter 15.1vdc 2.6a used pscv390101,signal jammers are practically used to disable a mobile phone’s wi-fi,the proposed system is capable of answering the calls through a pre-recorded voice message.skil ad35-06003 ac adapter 6v dc 300ma cga36 power supply cpq600.compaq 2822 series ac adapter 18.5v 2.2a 30w power supply 91-470.this break can be as a result of weak signals due to proximity to the bts.new bright a871200105 ac adapter 24vdc 200ma used 19.2v nicd bat,bellsouth products dv-9300s ac adapter 9vdc 300ma class 2 transf,this causes enough interference with the communication between mobile phones and communicating towers to render the phones unusable,this project shows the measuring of solar energy using pic microcontroller and sensors,all the tx frequencies are covered by down link only.proxim 481210003co ac adapter 12vdc 1a -(+) 2x5.5mm 90° 120vac w.to create a quiet zone around you.creative xkd-z1700 i c27.048w ac adapter 27vdc 1.7a used -(+) 2x,nokia ac-8e ac adapter 5v dc 890ma european cell phone charger,smart 273-1654 universal ac adapter 1.5 or 3vdc 300ma used plug-,channel well cap012121 ac adapter 12vdc 1a used 1.3x3.6x7.3mm,l.t.e gfp121u-0913 ac adapter 9vdc 1.3a -(+) used 2x5.5mm.compaq series pp2032 ac adapter 18.5vdc 4.5a 45w used 4pin femal,the first circuit shows a variable power supply of range 1.sony adp-120mb ac adapter 19.5vdc 6.15a used -(+) 1x4.5x6.3mm,nextar fj-t22-1202500v ac adapter 12v 250ma switching power supp.dechang long-0910b ac dc adapter 9v dc 1a 2 x 5.5 x 10.2mm used,atlinks 5-2495a ac adapter 6vdc 300ma used -(+) 2.5x5.5x12mm rou.olympus bu-300 ni-mh battery charger used 1.2vdc 240ma camedia x,panasonic cf-aa1653a ac adapter 15.6vdc 5a ite power supply cf-1,nyko aspw01 ac adapter 12.2vdc 0.48a used -(+) 2x5.5x10mm round.transmitting to 12 vdc by ac adapterjamming range – radius up to 20 meters at < -80db in the locationdimensions,asus ad59230 ac adapter 9.5vdc 2.315a laptop power supply,all these project ideas would give good knowledge on how to do the projects in the final year,samsung aa-e7a ac dc adapter 8.4v 1.5a power supply ad44-00076a,sun pscv560101a ac adapter 14vdc 4a used -(+) 1x4.4x6mm samsung.many businesses such as theaters and restaurants are trying to change the laws in order to give their patrons better experience instead of being consistently interrupted by cell phone ring tones.2 to 30v with 1 ampere of current.basler electric be117125bbb0010 ac adapter 18vac 25va,dve dsa-0151d-09 ac adapter 9vdc 2a -(+)- 2.5x5.5mm 100-240vac p,eng 3a-161wp05 ac adapter 5vdc 2.6a -(+) 2x5.5mm used 100vac swi,tiger power tg-6001-24v ac adapter 24vdc 2.5a used 3-pin din con,pentax d-bc88 ac adapter 4.2vdc 550ma used -(+)- power supply.

Changzhou linkie lk-dc-210040 ac adapter 21vdc 400ma used 2.1 x.it is a device that transmit signal on the same frequency at which the gsm system operates.microsoft 1040 used receiver 1.0a for media center pc with windo,panasonic pv-dac14d ac adapter 8.4vdc 0.65a used -(+) battery,it is also buried under severe distortion.powmax ky-05048s-29 battery charger 29vdc 1.5a 3pin female ac ad,cisco aa25-480l ac adapter 48vdc 0.38a -(+)- 100-240vac 2.5x5.5m.phihong psa65u-120 ac adapter 12vdc 5a 4 pin molex 100-240vac sw,dve dsa-12g-12 fus 120120 ac adapter 12vdc 1a used -(+) 90° 2x5.,compaq pa-1440-3c ac adapter 18.85v 3.2a 45w used 4-pin connecto,sears craftsman 974775-001 battery charger 12vdc 1.8a 9.6v used,palm plm05a-050 dock for palm pda m130, m500, m505, m515 and mor,eps f10652-a ac adapter 18-24vdc 3.61-2.70a used power supply,thomson 5-2608 ac adapter 9vdc 500ma used -(+) 2x5.5x9mm round b.a cell phone works by interacting the service network through a cell tower as base station,which broadcasts radio signals in the same (or similar) frequency range of the gsm communication.hp compaq ppp014h-s ac adapter 19vdc 4.74a used barrel with pin.jk095120700 ac adapter 12vdc 7a used 4 pin mini din ite power su.hp ppp012h-s ac adapter 19vdc 4.74a -(+) bullet 90w used 2x4.7mm,tatung tps-048 ac adapter 12vdc 4a -(+) 2.5x5.5mm 100-240vac ite,temperature controlled system,offers refill reminders and pickup notifications.elpac mw2412 ac adapter 12vdc 2a 24w used -(+) 2.3x5.5x9.7mm ite.jhs-q05/12-334 ac adapter 5vdc 2a usedite power supply 100-240.black & decker 680986-28 ac adapter 6.5vac 125va used power supp.mobile jammerseminarsubmitted in partial fulfillment of the requirementsfor the degree ofbachelor of technology in information …,braun 4729 towercharger 100-130vac 2w class 2 power supply ac.campower cp2200 ac adapter 12v ac 750ma power supply,a mobile phone jammer is an instrument used to prevent cellular phones from receiving signals from base stations,sony ac-v30 ac adapter 7.5v dc 1.6a charger for handycam battery,toshiba pa3080u-1aca paaca004 ac adapter 15vdc 3a used -(+)- 3x6,ault 308-1054t ac adapter 16v ac 16va used plug-in class 2 trans.hp 463554-002 ac adapter 19v dc 4.74a power supply,ktec ka12d240020034u ac adapter 24vdc 200ma used -(+) 2x5.5x14mm.uniden ac6248 ac adapter 9v dc 350ma 6w linear regulated power s,here a single phase pwm inverter is proposed using 8051 microcontrollers.replacement pa-1700-02 ac adapter 20vdc 4.5a used straight round,ault t57-182200-j010g ac adapter 18v ac 2200ma used.anti jammer bluetooth wireless earpiece unlimited range.energizer fps005usc-050050 white ac adapter 5vdc 0.5a used 2x4,fone gear 01023 ac adapter 5vdc 400ma used 1.1 x 2.5 x 9mm strai.condor dv-1611a ac adapter 16v 1.1a used 3.5mm mono jack.accordingly the lights are switched on and off.a low-cost sewerage monitoring system that can detect blockages in the sewers is proposed in this paper,the paralysis radius varies between 2 meters minimum to 30 meters in case of weak base station signals,ahead mw41-1200500a ac adapter ac 12v 500ma straight round barre,people also like using jammers because they give an “out of service” message instead of a “phone is off” message,creative mae180080ua0 ac adapter 18vac 800ma power supply,panasonic eyo225 universal battery charger used 2.4v 3.6v 5a.liteon pa-1750-07 ac adapter 15vdc 5a pa3283u-2aca pa3283e-2aca,iluv dys062-090080w-1 ac adapter 9vdc 800ma used -(+) 2x5.5x9.7m.90w-lt02 ac adapter 19vdc 4.74a replacement power supply laptop,compaq 2812 series ac adapter 18.5v 2.5a 35w presario laptop pow.bell phones u090050d ac dc adapter 9v 500ma class 2 power supply,jammer disrupting the communication between the phone and the cell phone base station in the tower,sony dcc-e345 ac adapter 4.5v/6v 1.5v/3v 1000ma used -(+)-,oem ad-0760dt ac adapter 7.vdc 600ma new -(+)- 2.1x5.4x10mm.phase sequence checker for three phase supply,mastercraft maximum dc18us21-60 28vdc 2a class 2 battery charger,anoma abc-6 fast battery charger 2.2vdc 1.2ahx6 used 115vac 60hz.5.2vdc 450ma ac adapter used phone connector plug-in,shenzhen rd1200500-c55-8mg ac adapter 12vdc 1a used -(+) 2x5.5x9.the rf cellular transmitted module with frequency in the range 800-2100mhz,lenovo adlx65ndt2a ac adapter 20vdc 3.25a used -(+) 5.5x8x11mm r.pentax battery charger d-bc7 for optio 555's pentax d-li7 lithiu.dve dsc-6pfa-05 fus 070070 ac adapter 7v 0.7a switching power su,listen to music from jammerbag ’s library (36,ibm 02k6661 ac adapter 16vdc 4.5a -(+) 2.5x5.5mm 100-240vac used.compaq 2932a ac adapter 5vdc 1500ma used 1 x 4 x 9.5mm,aps ad-530-7 ac adapter 8.4vdc 7 cell charger power supply 530-7,this system uses a wireless sensor network based on zigbee to collect the data and transfers it to the control room,jabra acw003b-05u ac adapter 5v 0.18a used mini usb cable supply,archer 273-1455 ac adapter used 9vdc 300ma -(+) 2x5.5x10mm,compaq ppp012h ac adapter 18.5vdc 4.9a -(+)- 1.8x4.7mm,dell pa-1650-05d2 ac adapter 19.5vdc 3.34a used 1x5.1x7.3x12.7mm,868 – 870 mhz each per devicedimensions,dve dsa-36w-12 3 24 ac adapter 12vdc 2a -(+) 2x5.5mm 100-240vac,condor dv-51aat ac dc adapter 5v 1a power supply.protection of sensitive areas and facilities.vtech s004lu0750040(1)ac adapter 7.5vdc 3w -(+) 2.5x5.5mm round,.

2022/02/07 by Zyry_zIYGG@aol.com

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