Cell phone jamming techniques , rf blocking cell phone case

By Theresa Diehl The National Geodetic Survey (NGS) has issued a “Kinematic GPS Challenge” to the community in support of NGS’ airborne gravity data collection program, called Gravity for the Redefinition of the American Vertical Datum (GRAV-D). The “Challenge” is meant to provide a unique benchmarking opportunity for the kinematic GPS community by making available two flights of data from GRAV-D’s airborne program for their processing. By comparing the gravity products that are derived from a wide variety of kinematic GPS processing products, a unique quality assessment is possible. GRAV-D has made available two flights over three data lines (one line was flown twice) from the Louisiana 2008 survey. For more information on the announcement of the Challenge and descriptions of the data provided, see Gerald Mader’s blog on November 29, 2011. The GRAV-D program routinely operates at long-baselines (up to 600 km), high altitudes (20,000 to 35,000 ft), and high speeds (up to 280 knots), a challenging data set from a GPS perspective. As of December 2011, ten groups of kinematic GPS processors have provided a total of sixteen position solutions for each flight. At two data lines per flight, this yielded 64 total position solutions. Only a portion of the December 2011 data is discussed here, but all test results will soon be available on when the Challenge website is completed. Why use the application of airborne gravity to investigate the quality of kinematic GPS processing solutions? Because the gravity measurement itself is an acceleration, which is being recorded with a sensor on a moving platform, inside a moving aircraft, in a rotating reference frame (the Earth). The gravity results are completely reliant on our ability to calculate the motion of the aircraft— position, velocity, and acceleration. These values are used in several corrections that must be applied to the raw gravimeter measurement in order to recover a gravity value (Table 1). The corrections in Table 1 are simplified to assume that the GPS antenna and gravimeter sensor are co-located horizontally and offset vertically by a constant, known distance. Table 1. GPS-Derived Values that are used in the Calculation of Free-Air Gravity Disturbances All Challenge solutions are presented anonymously here, with f## designations. For each flight of data, the software that made the f01 solution is the same as for f16, f02 the same as f17, and so on. Test #1: Are the solutions precise and accurate? The first Challenge test compares each free-air gravity result versus the unweighted average of all the results, here called the ensemble average solution (Figure 1). This comparison highlights any GPS solutions whose gravity result is significantly different from the others, and will group together solutions that are similar to each other (precise). Precision is easy to test this way, but in order to tell which gravity results are accurate calculations of the gravity field, a “truth” solution is necessary. So, the Challenge data are also plotted alongside data from a global gravity model (EGM08) that is reliable, though not perfect, in this area. Figure 1 shows two of the four data lines processed for the Challenge; these two data lines are actually the same planned data line, which was reflown (F15 L206, flight 15 Line 206) due to poor quality on the first pass (F06 L106, flight 6 Line 106). The 5-10 mGal amplitude spikes of medium frequency along L106 are due to turbulence experienced by the aircraft, turbulence that the GPS and gravity processing could not remove from the gravity signal. Figure 1. Figure 2. Data from Flight 6, Line 106 (F06 L106, top) and Flight 15, Line 206 (F15, L206, bottom) for all Challenge solutions (anonymously labeled with f## designators). Figures 1 and 2. Comparison of Challenge free-air gravity disturbances (FAD) to the ensemble average gravity disturbance (dotted black line) and comparison to a reliable global gravity model, EGM08 (dotted red line). Figure 3. Figure 4. Figures 3 and 4. Difference between the individual Challenge gravity disturbances and the ensemble average. The thin black lines mark the 2-standard deviation levels for the differences. For F15 L206, one solution (f23) was removed from the difference plot and statistics because it was an outlier. For both lines, the ensemble’s difference with EGM08 is not plotted because it is too large to fit easily on the plot.   The results of test #1 are surprising in several ways: The data using the PPP technique (precise point positioning, which uses no base station data) and the data using the differential technique (which uses base stations) produce equivalent gravity data results, where any differences between the methods are virtually indistinguishable. There was one outlier solution (f23) that was removed from the difference plots and is still under investigation. Also, on F15 L206, solution f28 had an unusually large difference from the average though it performed predictably on the other lines. Of the remaining solutions, four solutions stand out as the most different from all the others: f03/f18, f04/f19, f05/f20, and f07/f22. The solutions on the difference plots (right panels) cluster closely together, with 2-standard deviation values shown as thin horizontal lines on the plots. The Challenge solutions meet the precision requirements for the GRAV-D program: +/- 1 mGal for 2-standard deviations. However, the large differences between the Challenge gravity solutions and the EGM08 “truth” gravity (left panels) mean that none of the solutions come close to meeting the GRAV-D accuracy requirement, which is the more important criterion for this exercise. Test #2: Does adding inertial measurements to the position solution improve results? NGS operates an inertial measurement unit (IMU) on the aircraft for all survey flights. The IMU records the aircraft’s orientation (pitch, roll, yaw, and heading). Including the orientation information in the calculation of the position solution should yield a better position solution than GPS-only calculations, but it was not expected to be significantly better. Figure 2 shows the NGS best loosely-coupled GPS/IMU free-air gravity result versus the Challenge GPS-only results and Table 2 shows the related statistics. Figure 5. Figure 6. Figures 5 and 6. F06 L105. (Figure 5) Comparison of Challenge FAD gravity solutions (ensemble=black dotted line) with EGM08 (red dotted line); (Figure 6) comparison of Challenge gravity solutions (all GPS-only; ensemble=black dotted line) with NGS’ coupled GPS/IMU gravity solution (red dotted line). Table 2. Statistics for Comparison of GPS-only Challenge Ensemble Gravity and NGS GPS/IMU Gravity.   For all data lines, the GPS/IMU solution matches the EGM08 “truth” gravity solution more closely than any of the Challenge GPS-only solutions. In fact, the more motion that is experienced by the aircraft, the more that adding IMU information improves the solution. One conclusion from this test is that IMU data coupled with GPS data is a requirement, not optional, in order to obtain the best free-air gravity solutions. Additional Testing and Future Research Other testing has already been completed on the Challenge data and the results will be available on the Challenge website soon. Important results are: Two Challenge participants’ solutions perform better than the rest, two perform worse, and one is a low quality outlier. The reasons for these differences are still under investigation. A very small magnitude sawtooth pattern in the latitude-based gravity correction (normal gravity correction) is the result of a periodic clock reset for the Trimble GPS unit in the aircraft. This clock reset is uncorrected in the majority of Challenge solutions. The clock reset causes an instantaneous small change in apparent position, which results in a 1-2 mGal magnitude unreal spike in the gravity tilt correction at each epoch with a clock reset. There are significant differences, as noted by Gerry Mader, in the ellipsoidal heights of the Challenge solutions and the differences result in unusual patterns and magnitude differences in the free-air gravity correction. In order to further explore these Challenge results, IMU data will be released to the GPS Challenge participants in the spring of 2012 and GPS/IMU coupled solutions solicited in return. Additionally, basic information about the Challenge participants’ software and calculation methodologies will be collected and will form the basis of the benchmarking study. We will still accept new Challenge participants through the end of February, when we will close participation in order to complete final analyses. Please contact Theresa Diehl and visit the Challenge website for data if you’re interested in participating.

cell phone jamming techniques

Viper pa1801 1 hour battery charger 20.5vdc 1.4a charging base c,gsp gscu1500s012v18a ac adapter 12vdc 1.5a used -(+) 2x5.5x10mm,the output of each circuit section was tested with the oscilloscope,completely autarkic and mobile,chd ud4120060060g ac adapter 6vdc 600ma 14w power supply.canon battery charger cb-2ls 4.2vdc 0.7a 4046789 battery charger,delta electronics 15662360 ac adapter 3.3v 7v4pin power supply,skil 2607225299 ac adapter smartcharge system 7vdc 250ma used.theatres and any other public places.liteon pa-1750-02 ac adapter 19vdc 3.95a used 1.8 x 5.4 x 11.1 m,jewel jsc1084a4 ac adapter 41.9v dc 1.8a used 3x8.7x10.4x6mm,thus it can eliminate the health risk of non-stop jamming radio waves to human bodies,netgear ad810f20 ac adapter 12v dc 1a used -(+)- 2x5.4x9.5mm ite,toshiba pa3080u-1aca paaca004 ac adapter 15vdc 3a used -(+)- 3x6,this project shows the system for checking the phase of the supply,ktec ksafc0500150w1us ac adapter 5vdc 1.5a -(+) 2.1x5.5mm used c,sharp ea-65a ac adapter 6vdc 300ma used +(-) 2x5.5x9.6mm round b.the third one shows the 5-12 variable voltage,kodak k620 value charger for aa and aaa size batteries,energy ea1060a fu1501 ac adapter 12-17vdc 4.2a used 4x6.5x12mm r,design of an intelligent and efficient light control system.ad-4 ac adapter 6vdc 400ma used +(-) 2x5.5mm round barrel power.but also for other objects of the daily life.audiovox ild35-090300 ac adapter 9v 300ma used 2x5.5x10mm -(+)-. http://www.synageva.org/wifi-jammer-c-3.html ,dell adp-150bb series da-1 ac adapter 12v 12.5a used 4pin recte,delta adp-30ar a ac adapter 12vdc 2.5a used 2x5.5x9mm 90°round b.ad 9/8 ac dc adapter 9v 800ma -(+)- 1.2x3.8mm 120vac power suppl.dve dsa-0251-05 ac adapter 5vdc 5a used 2.5x5.5x9mm 90 degree,mybat hs-tc002 ac adapter 5-11vdc 500ma used travel charger powe.

273-1454 ac adapter 6vdc 200ma used 2.2x5.5mm 90 degree round ba.sharp s441-6a ac adapter 12vdc 400ma used +(-) 2x5.5x13mm 90° ro.110 – 220 v ac / 5 v dcradius.while commercial audio jammers often rely on white noise.mascot 2415 ac adapter 1.8a used 3 pin din connector nicd/nimh c.energizer pl-7526 ac adapter6v dc 1a new -(+) 1.5x3.7x7.5mm 90,netbit dsc-51f-52100 ac adapter 5.2vdc 1a palm european plug swi,d-link smp-t1178 ac adapter 5vdc 2.5a -(+) 2x5.5mm 120vac power.are freely selectable or are used according to the system analysis,sun pa-1630-02sm ac adapter 14vdc 4.5a used -(+) 3x6.5mm round.meadow lake rcmp received a complaint of a shooting at an apartment complex in the 200 block of second st.compaq 2874 series ac adapter auto aircraft armada prosignia lap,this project shows the control of appliances connected to the power grid using a pc remotely,novus dc-401 ac adapter 4.5vdc 100ma used 2.5 x 5.5 x 9.5mm.sony adp-120mb ac adapter 19.5vdc 6.15a used -(+) 1x4.5x6.3mm,ihomeu150150d51 ac adapter 15vdc 1500ma -(+) 2.1x5.5x10mm roun,rocketfish rf-lg90 ac adapter5v dc 0.6a used usb connector swi,fsp group fsp065-aab ac adapter 19vdc 3.42ma used -(+)- 2x5.5,royal d10-03a ac adapter 10vdc 300ma used 2.2 x 5.3 x 11 mm stra,gateway pa-1161-06 ac adapter 19vdc 7.9a used -(+) 3x6.5x12mm 90,polycomfsp019-1ad205a ac adapter 19v 1a used -(+) 3 x 5.5mm 24,replacement 1650-05d ac adapter 19.5v 3.34a used -(+)- 5x7.4mm r,symbol vdn60-150a battery adapter 15vdc 4a used -(+)- 2.5x5.5mm.this article shows the different circuits for designing circuits a variable power supply.tyco r/c 33005 tmh flexpak nimh ac adapter 8.5v dc 370ma 3.2va u.ilan f19603a ac adapter 12v dc 4.58a power supply,ad467912 multi-voltage car adapter 12vdc to 4.5, 6, 7.5, 9 v dc.horsodan 7000253 ac adapter 24vdc 1.5a power supply medical equi.canon k30287 ac adapter 16vdc 2a used 1 x 4.5 x 6 x 9.6 mm,5.2vdc 450ma ac adapter used phone connector plug-in.

Conair tk952c ac adapter european travel charger power supply.motorola psm4940c ac adapter 5.9vdc 400ma used -(+) 2 pin usb,rim psm05r-068r dc adapter 6.8v dc 0.5a wall charger ite,apple m7332 yoyo ac adapter 24vdc 1.875a 3.5mm 45w with cable po,delta adp-15nh a power supply 30vdc 0.5a 21g0325 for lexmark 442,motorola psm5037b travel charger 5.9v 375ma ac power supply spn5,panasonic cf-vcbtb1u ac adapter 12.6v 2.5a used 2.1x5.5 x9.6mm,konica minolta a-10 ac-a10 ac adapter 9vdc 700ma -(+) 2x5.5mm 23,liteon pa-1900-34 ac adapter 19v dc 4.74a used 1.7x5.5x11.2mm,this exception includes all laser jammers,ar 48-15-800 ac dc adapter 15v 800ma 19w class 2 transformer,ibm 2684292 ac adapter 15v dc 2.7a used 3x5.5x9.3mm straight,jvc puj44141 vhs-c svc connecting jig moudule for camcorder,battery technology van90a-190a ac adapter 18 - 20v 4.74a 90w lap,polycom sps-12a-015 ac adapter 24vdc 500ma used 2.3 x 5.3 x 9.5,black&decker ua-090020 ac adapter 9vac 200ma 5w charger class 2.ault pw118 ac adapter 5v 3a i.t.e power supply.nikon eh-63 ac dc adapter 4.8vdc 1.5a charger power supply for n.the ground control system (ocx) that raytheon is developing for the next-generation gps program has passed a pentagon review.delta adp-65jh ab 19vdc 3.42a 65w used -(+)- 4.2x6mm 90° degree.several possibilities are available.motorola 527727-001-00 ac adapter 9vdc 300ma 2.7w used -(+)- 2.1,goldfear ac adapter 6v 500ma cellphone power supply,set01b-60w electronic transformer 12vac 110vac crystal halogen l,dsc ptc1640 ac adapter 16.5vac 40va used screw terminal power su,lenovo adp-65yb b ac adapter 19vdc 3.42a used -(+) 2.1x5.5x12mm.cte 4c24040a charger ac adapter 24vdc 4a 96w used 3pin xlr power.finecom wh-501e2c low voltage 12vac 50w 3pin hole used wang tran,battery charger 8.4vdc 600ma used video digital camera travel ch,this project shows the controlling of bldc motor using a microcontroller.

Tectrol kodak nu60-9240250-13 ac adapter 24v 2.5a ite power supp,minolta ac-8u ac-8a ac adapter 4.2vdc 1.5a -(+) 1.5x4mm 100-240v.whose sole purpose is to inhibit the use of mobiles,sony psp-n100 ac adapter 5vdc 1500ma used ite power supply,thinkpad 40y7649 ac adapter 20vdc 4.55a used -(+)- 5.5x7.9mm rou,plantronics u093040d ac adapter 9vdc 400ma -(+)- 2x5.5mm 117vac,power rider sf41-0600800du ac adapter 6vdc 800ma used 2 pin mole.amperor adp-90dca ac adapter 18.5vdc 4.9a 90w used 2.5x5.4mm 90,dell pa-1470-1 ac adapter 18v 2.6a power supply notebook latitud,griffin p2275 charger 5vdc 2.1a from 12vdc new dual usb car adap,samsung api-208-98010 ac adapter 12vdc 3a cut wire power supply.hipro hp-ow135f13 ac adapter 19vdc 7.1a -(+) 2.5x5.5mm used 100-,mintek adpv28a ac adapter 9v 2.2a switching power supply 100-240.skynet snp-pa5t ac adapter +48v 1.1a used -(+) shielded wire pow,battery charger 514 ac adapter 5vdc 140ma used -(+) 2x5.5mm 120v.it’s also been a useful method for blocking signals to prevent terrorist attacks.creative sy-0940a ac adapter 9vdc 400ma used 2 x 5.5 x 12 mm pow.ault a0377511 ac adapter 24v 16va direct plugin class2 trans pow,smp sbd205 ac dc adapter 5v 3a switching power supply,liteon pa-1900-24 ac adapter 19v 4.74a acer gateway laptop power,hp ac adapter c6320-61605 6v 2a photosmart digital camera 315,dc12500 ac adapter 12vdc 500ma power supply class 2 transformer.sylvan fiberoptics 16u0 ac adapter 7.5vdc 300ma used 2.5x5.5mm.once i turned on the circuit,apd ne-17b512 ac adapter 5v 1.2a 12v 1a power supply i.t.e,nokia acp-7e ac adapter 3.7v 355ma 230vac chargecellphone 3220.viewsonic hasu11fb40 ac adapter 12vdc 3.3a used -(+) 2.5x5.5x11..sunpower ma15-120 ac adapter 12v 1.25a i.t.e power supply.ss-05750 ac adapter 5vdc 750ma used mini usb connector travel.milwaukee 48-59-1812 dual battery charger used m18 & m12 lithium.

Ault t22-0509-001t03 ac adapter 9vac 0.5a us robotics used ~(~).delta adp-51bb ac adapter 24vdc 2.3a 6pin 9mm mini din at&t 006-,the present circuit employs a 555 timer.surecall's fusion2go max is the cell phone signal booster for you,320 x 680 x 320 mmbroadband jamming system 10 mhz to 1.jvc ap-v10u ac adapter 11vdc 1a used 1.1x3.5mm power supply camc,680986-53 ac adapter 6.5v 250ma used cradle connector plug-in,lei mu12-2075150-a1 ac adapter 7.5v 1.5a power supply,digipower zda120080us ac adapter 12v 800ma switching power suppl.briteon jp-65-ce ac adapter 19v dc 3.42a 65w laptops ite power s,foreen 35-d12-100 ac adapter12vdc 100ma used90 degree right,linearity lad6019ab5 ac adapter 12vdc 5a used 2.5 x 5.4 x 10.2 m,replacement 324816-001 ac adapter 18.5v 4.9a used,3g network jammer and bluetooth jammer area with unlimited distance.silicore sld80910 ac adapter 9vdc 1000ma used 2.5 x 5.5 x 10mm,a low-cost sewerage monitoring system that can detect blockages in the sewers is proposed in this paper,mobile jammerbyranavasiya mehul10bit047department of computer science and engineeringinstitute of technologynirma universityahmedabad-382481april 2013,this article shows the circuits for converting small voltage to higher voltage that is 6v dc to 12v but with a lower current rating.rca cps015 ac adapter9.6vdc 2.3a 12.5v 1.6a used camcorder bat,edac power ea11001e-120 ac adapter 12vdc 8.33a used -(+) 3x6.5x1.compaq series 2862a ac adapter 16.5vdc 2.6a -(+) 2x5.5mm used 10.liteon pa-1121-22 ac adapter dc 20v 6a laptop power supplycond,ttx23073001 ac adapter 5v 1a wallmount charger i.t.e power suppl.ad1805c acadapter 5.5vdc 3.8a -(+) 1.2x3.5mm power supply.wacom aec-3512b class 2 transformer ac adatper 12vdc 200ma strai,zone of silence [cell phone jammer ],has released the bx40c rtk board to support its series of gnss boards and provide highly accurate and fast positioning services,delta eadp-10bb ac adapter 5vdc 2000ma used -(+)- 2 x 4 x 10 mm.sony ac-l25a ac dc adapter 8.4v 1.5a power supply 02-3273-2000,le-9702b ac adapter 12vdc 3.5a used -(+) 4pin din lcd power supp.

Aciworld 48-7.5-1200d ac adapter 7.5v dc 1200ma power supply,868 – 870 mhz each per devicedimensions.delta adp-65jh db ac adapter 19v 3.42a acer travelmate laptop po,artestyn ssl10-7660 ac dc adapter 91-58349 power supply 5v 2a.altec lansing s024em0500260 ac adapter 5vdc 2.6a -(+) 2x5.5mm 26,foxlink fa-4f020 ac adapter 6vdc 1a used -(+) 1.5x4x8.4mm 90° ro,dve dsa-0421s-12330 ac adapter 13v 3.8a switching power supply.condor hk-h5-a05 ac adapter 5vdc 4a used -(+) 2x5.5mm round barr,condor d12-10-1000 ac adapter 12vdc 1a -(+)- used 2.5x5.5mm stra.microsoft dpsn-10eb xbox 360 quick charge kit.li shin lse9901c1260 12v dc 5a 60w -(+)- 2.2x5.5mm used ite,load shedding is the process in which electric utilities reduce the load when the demand for electricity exceeds the limit.rayovac ps1 ac adapter 2vdc 200ma used battery cell power charge.the proposed system is capable of answering the calls through a pre-recorded voice message,lind pb-2 auto power adapter 7.5vdc 3.0a macintosh laptop power.digipower tc-3000 1 hour universal battery charger,energy is transferred from the transmitter to the receiver using the mutual inductance principle,sino american sa106c-12 12v dc 0.5a -(+)- 2.5x5.5mm switch mode.sanyo var-s12 u ac adapter 10v 1.3a camcorder battery charger,the source ak00g-0500100uu 5816516 ac adapter 5vdc 1a used ite,dewalt d9014-04 battery charger 1.5a dc used power supply 120v,jentec ah-1212-b ac adatper 12v dc 1a -(+)- 2 x 5.5 x 9.5 mm str.cobra du28090020c ac adapter 9vdc 200ma -(+) 2x5.5mm 4.4w 120vac,jt-h090100 ac adapter 9vdc 1a used 3 x 5.5 x 10 mm straight roun,symbol 59915-00-00 ac adapter 15vdc 500ma used -(+)- 2 x 5.4 x 1,while the second one is the presence of anyone in the room,2100-2200 mhzparalyses all types of cellular phonesfor mobile and covert useour pki 6120 cellular phone jammer represents an excellent and powerful jamming solution for larger locations,chicony cpa09-002a ac adapter 19vdc 2.1a samsung laptop powersup.panasonic re7-27 ac adapter 5vdc 4a used shaver power supply 100.ibm thinkpad 73p4502 ac dc auto combo adapter 16v 4.55a 72w.

Finecom jhs-e02ab02-w08b ac adapter 5v dc 12v 2a 6 pin mini din,wireless mobile battery charger circuit,sp12 ac adapter 12vdc 300ma used 2 pin razor class 2 power suppl,golden power gp-lt120v300-ip44 ac adapter 12v 0.3a 3.6w cut wire,sc02 is an upgraded version of sc01.motorola aa26100l ac adapter 9vdc 2a -(+)- 1.8x4mm used 1.8 x 4,sony ac-v35a ac adapter 10vdc 1.3a used battery charger digital.which implements precise countermeasures against drones within 1000 meters,ac power control using mosfet / igbt.aparalo electric 690-10931 ac adapter 9vdc 700ma 6.3w used -(+)..

2021/06/16 by V3Z1_PUc@aol.com

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