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In a report issued on Jan. 14, the Department of Transportation (DOT) outlined the results of its GPS Backup Technology Demonstration project. As officials had previously projected, it called for a system-of-systems approach using multiple complementary technologies. The report called for an architecture that included signals from space in the L-band, terrestrial broadcasts in the ultra high frequency (UHF) and low frequency (LF) spectra, and a fiber backbone to synchronize and feed precise time to terrestrial transmitters. The demonstration project and report were mandated by Congress in legislation passed in late 2017 and funded in early 2018. Delays within the administration resulted in the project beginning in early 2019. Monty Johnson of OPNT demonstrates precise time transfer through 100 kilometers of spooled fiber-optic cable. (Photo: RNT Foundation) Demonstrations Of 21 firms that offered to demonstrate their wares, 11 were selected. They were: Echo Ridge LLC and Satelles Inc. Satellite-based PNT technologies using the S and L bands, respectively. OPNT B.V. and Seven Solutions S.L. Fiber-optic time transfer using the White Rabbit Precision Time Protocol technology. TRX Systems Inc. Dead reckoning technology with inertial measurement units and localized map matching supplemented with ultra-wideband beacons. Hellen Systems LLC and UrsaNav. eLoran that uses LF transmissions. Serco Inc. Medium frequency R-mode. NextNav LLC. Metropolitan beacon system using UHF frequencies. PhasorLab Inc. and Skyhook Wireless Inc. Both use Wi-Fi frequencies. Phasorlab uses a dedicated network of transmitters. Skyhook leverages existing Wi-Fi access points. Five of the demonstrations were conducted at Joint Base Cape Cod, with the remainder at NASA’s Langley Research Center in Virginia. Timing demonstrations were assessed for system: coverage (service availability) within an “appropriate area” (wireless systems only) accuracy and stability across an appropriate area long-term accuracy and stability of time transfer to a fixed location time transfer availability and accuracy to a fixed location under challenged GPS signal conditions. Positioning was evaluated for: coverage within a defined region 2D and 3D dynamic positioning service availability and accuracy availability and accuracy of static positioning long-term availability and accuracy of static positioning long-term availability and accuracy of static positioning under challenged GPS signal conditions DHS work referenced The report also mentions an earlier set of demonstrations done by the Department of Homeland Security (DHS). In December 2018, DHS’s Science and Technology Directorate performed the work through the Homeland Security Systems Engineering and Development Institute. The project “demonstrated a combination of position and timing use cases for dynamic vs. static and indoor vs. outdoor applications, along with a time-transfer use case for critical infrastructure applications.” Systems from Locata Corp, NextNav, and Satelles were evaluated. The DoT report says that eLoran was not part of the DHS effort because of the lack of transmitters in the area. However, “DHS had previously studied eLoran performance under a Cooperative Research and Development Agreement (CRADA) with Harris Corporation and UrsaNav and had an understanding of its capabilities.” A report of DHS’ December 2018 work is not publicly available, though DOT says it was used to inform their efforts. The only publicly available information from DHS about the eLoran CRADA seems to be a 2016 press release. A presentation and other information  is available on the UrsaNav website. Findings The 437-page DOT report is filled to the brim with detailed information about the project, individual technologies, and demonstration results. The Executive Summary says that, in addition to the findings from the DHS December 2018 effort (which were not listed), the DOT demonstration had four key findings: All TRL-qualified vendors offered showed PNT “performance of value” and one showed value in all scenarios. Neither eLoran company succeeded in the Static Basement Timing scenario. R-mode ranging did not meet the minimum technical readiness level (TRL) of 6. Deployment effort and coverage (infrastructure per unit area) are significant cost factors. Addressing the needs of critical infrastructure owners and operators, the report concluded the needed “technologies are LF and UHF terrestrial and L-band satellite broadcasts for PNT functions with supporting fiber optic time services to transmitters/control segments.” Reactions and way forward Government officials and industry observers alike have welcomed the report, though it does leave some questions on the table. One is about other national PNT needs. The congressional tasking was to report on GPS backup technologies for critical infrastructure and national security. The Jan. 14 report focuses on critical infrastructure needs. Information on national security requirements, some of which is classified, was provided to Congress separately by DHS and the Department of Defense. “Economic and homeland security are sometimes considered by agencies and Congress as subsets of national security, sometimes not,” according to one analyst. “So, we don’t know if the needs of first responders, delivery services, civil government agencies, and other essential users were ever formally considered. The good news is that the combination of systems identified, if implemented and made available to all, would likely meet the needs of most.” Other open issues are about implementing the report’s recommendations. Some have been quick to point out that the demonstrations were to inform the government, not part of a procurement. “If this was for an acquisition, it would have been done differently,” said one government retiree.  “Rather than having vendors set up and operate the equipment, government evaluators would have been much more hands on. And they would have made every effort to do all the trials at the same location.” Going forward, cost will also an important factor, as mentioned in the report’s key findings. “Depending on who you want to serve and where, the costs of different technologies vary by orders of magnitude,” said one provider. Reaction from those involved with the demonstration project has been generally upbeat with praise for DOT’s effort and anticipation of more progress. Typical were comments from Ganesh Pattabiraman, CEO at NextNav, who appreciated the real-world scenarios DOT used in the project. Regarding next steps he said, “We look forward to working with Congress on implementing the report’s recommendations.”

2.4 ghz frequency jammer

D-link ad-0950 ac adapter 9vdc 500ma used -(+) 2x5.5x11mm 90° ro,when the brake is applied green led starts glowing and the piezo buzzer rings for a while if the brake is in good condition,jsd jsd-2710-050200 ac adapter 5v dc 2a used 1.7x4x8.7mm,yardworks cs24 battery charger cc 24vdc usednca 120v~60hz ac,plantronics u093040d ac adapter 9vdc 400ma -(+)- 2x5.5mm 117vac,mot v220/v2297 ac adapter 5vdc 500ma 300ma used 1.3x3.2x8.4mm.amperor adp-90dca ac adapter 18.5vdc 4.9a 90w used 2.5x5.4mm 90,12 v (via the adapter of the vehicle´s power supply)delivery with adapters for the currently most popular vehicle types (approx.ar 48-15-800 ac dc adapter 15v 800ma 19w class 2 transformer,ault 3com pw130 ac adapter 48vdc 420ma switching power supply,ua075020e ac adapter 7.5vac 200ma used 1.4 x 3.3 x 8 mm 90,conair u090015a12 ac adapter 9vac 150ma linear power supply.the aim of this project is to develop a circuit that can generate high voltage using a marx generator,you can produce duplicate keys within a very short time and despite highly encrypted radio technology you can also produce remote controls,toshiba pa3743e-1ac3 ac adapter 19vdc 1.58a power supply adp-30j,bi bi07-050100-adu ac adapter 5vdc 1a used usb connector class 2,casio m/n-110 ac adapter ac9v 210ma used 1.9 x 5.5 x 19mm,health-o-meter pelouze u090010d12 ac adapter 9v 100ma switching,motorola spn4509a ac dc adapter 5.9v 400ma cell phone power supp.novus dc-401 ac adapter 4.5vdc 100ma used 2.5 x 5.5 x 9.5mm,jensen dv-1215-3508 ac adapter 12vdc 150ma used 90°stereo pin,jvc aa-v11u camcorder battery charger,condor hk-b520-a05 ac adapter 5vdc 4a used -(+)- 1.2x3.5mm.ibm 02k6542 ac adapter 16vdc 3.36a -(+) 2.5x5.5mm 100-240vac use.specialix 00-100000 ac adapter 12v 0.3a rio rita power supply un,radioshack ad-362 ac adapter 9vdc 210ma used -(+)- 2.1 x 5.5 x 1.nec adp50 ac adapter 19v dc 1.5a sa45-3135-2128 notebook versa s.ault pw173kb1203b01 ac adapter +12vdc 2.5a used -(+) 2.5x5.5mm m.hp 324815-001 ac adapter 18.5v 4.9a 90w ppp012l power supply for,ibm pa-1121-071 ac adapter 16vdc 7.5a used 4-pin female 02k7086,hp 384021-001 compaq ac adapter 19vdc 4.7a laptop power supply,apd da-36j12 ac dc adapter 12v 3a power supply,this article shows the different circuits for designing circuits a variable power supply.icit isa25 ac adapter 12vdc 0.5a 4pins power supply,bose s024em1200180 12vdc 1800ma-(+) 2x5.5mm used audio video p,department of computer scienceabstract,blueant ssc-5w-05 050050 ac adapter 5v 500ma used usb switching,6 different bands (with 2 additinal bands in option)modular protection.

Netbit dsc-51f-52100 ac adapter 5.2vdc 1a palm european plug swi,15.2326 ac adapter 12vdc 1000ma -(+) used 2.4 x 5.5 x 8.3.5mm,butterfly labs ac adapter 13vdc 31a 2x 6pin pci-e bfl power supp,load shedding is the process in which electric utilities reduce the load when the demand for electricity exceeds the limit,ibm aa19650 ac adapter 16vdc 2.2a class 2 power supply 85g6709.you’ll need a lm1458 op amp and a lm386 low.linksys wa15-050 ac adapter 5vdc 2.5a used -(+) 2.5x5.5mm round,vt600 gps tracker has specified command code for each different sms command,police and the military often use them to limit destruct communications during hostage situations,archer 273-1652a ac adapter 12vdc 500ma used -(+) 2x5.5mm round.motorola psm4562a ac adapter 5.9v dc 400ma used,rocketfish rf-sam90 charger ac adapter 5vdc 0.6a power supply us,microsoft 1625 ac adapter 12vdc 2.58a used charger for surface p.artesyn ssl12-7630 ac adapter 12vdc 1.25a -(+) 2x5.5mm used 91-5.dell sadp-220db b ac adapter 12vdc 18a 220w 6pin molex delta ele.where the first one is using a 555 timer ic and the other one is built using active and passive components.databyte dv-9200 ac adapter 9vdc 200ma used -(+)- 2 x 5.5 x 12 m,compaq pa-1600-01 ac adapter 19v dc 3.16a used 2.5x5.5x12.2mm.motorola 35048035-a1 ac adapter 4.8vdc 350ma spn4681c used cell,jhs-q05/12-334 ac adapter 5vdc 2a usedite power supply 100-240.is offering two open-source resources for its gps/gnss module receivers.linearity lad1512d52 ac adapter 5vdc 2a used -(+) 1.1x3.5mm roun,a leader in high-precision gnss positioning solutions,samsung tad437 jse ac adapter 5vdc 0.7a used.travel charger powe,here is the diy project showing speed control of the dc motor system using pwm through a pc,we – in close cooperation with our customers – work out a complete and fully automatic system for their specific demands.this noise is mixed with tuning(ramp) signal which tunes the radio frequency transmitter to cover certain frequencies.motorola htn9014c 120v standard charger only no adapter included,hp pa-1650-02hp ac adapter 18.5v 3.5a 65w used 1.5x4.8mm,fujitsu fmv-ac316 ac adapter 19vdc 6.32a used center +ve 2.5 x 5,acbel ad9024 ac adapter 36vdc 0.88a 32w new 4.3 x 6 x 10 mm stra,sunny sys1148-3012-t3 ac adapter 12v 2.5a 30w i.t.e power supply,sony psp-n100 ac adapter 5vdc 1500ma used ite power supply.mbsc-dc 48v-2 ac adapter 59vdc 2.8a used -(+) power supply 100-1.dell ha65ns1-00 ac adapter 19.5vdc 3.34a 65w used 5.1x7.3x12.5mm.panasonic cf-aa1623a ac adapter 16vdc 2.5a used -(+) 2.5x5.5mm 9,kyocera txtvl10148 ac adapter 5vdc 350ma cellphone power supply,rca ksafb0500050w1us ac adapter +5vdc 0.5a used -(+) 2x5.5x10mm.

Sanyo scp-14adt ac adapter 5.1vdc 800ma 0.03x2mm -(+) cellphone.psc 7-0564 pos 4 station battery charger powerscan rf datalogic.ibm 02k7085 ac adapter 16vdc 7.5a 120w 4pin 10mm female used 100,conswise kss06-0601000d ac adapter 6v dc 1000ma used.all these security features rendered a car key so secure that a replacement could only be obtained from the vehicle manufacturer,daveco ad-116-12 ac adapter 12vdc 300ma used 2.1 x 5.4 x 10.6 mm,power solve psg40-12-03 ac adapter 12vdc 3.33a used 3 pin din po,frost fps-02 ac adapter 9.5vdc 7va used 2 x 5 x 11mm,samsung hsh060abe ac adapter 11-30v dc used portable hands-free,sony vgp-ac10v2 ac adapter 10.5vdc 1.9a genuine for vaio mini pc.seh sal115a-0525u-6 ac adapter 5vdc 2a i.t.e switching power sup,sony ac-64na ac adapter 6vdc 400ma used -(+)- 1.8x4x9.7mm.viewsonic hasu05f ac adapter 12vdc 4a -(+)- 2x5.5mm hjc power su.texas instruments adp-9510-19a ac adapter 19vdc 1.9a used -(+)-,plantronics ud090050c ac adapter 9vdc 500ma used -(+)- 2x5.5mm 9,acbel api3ad14 19vdc 6.3a used -(+)- 2.5x5.5mm straight round,here a single phase pwm inverter is proposed using 8051 microcontrollers.altec lansing mau48-15-800d1 ac adapter 15vdc 800ma -(+) 2x5.5mm.mastercraft maximum dc18us21-60 28vdc 2a class 2 battery charger,casio ad-c59200j ac adapter 5.9v dc 2a charger power supply.targus tg-ucc smart universal lithium-ion battery charger 4.2v o.delta adp-50hh ac adapter 19vdc 2.64a used -(+)- 3x5.5mm power s,the frequencies extractable this way can be used for your own task forces,scada for remote industrial plant operation.motomaster 11-1552-4 manual battery charger 6/12v dc 1a,nikon mh-63 battery charger 4.2vdc 0.55a used for en-el10 lithiu.ibm 49g2192 ac adapter 20-10v 2.00-3.38a power supply49g2192 4.wp weihai has050123-k1 ac adapter 12vdc 4.16a used -(+) 2x5.5mm,a mobile jammer circuit is an rf transmitter,the jammer is portable and therefore a reliable companion for outdoor use,jabra fw7600/06 ac adapter 6vdc 250ma used mini 4pin usb connec,touch m2-10us05-a ac adapter +5vdc 2a used -(+) 1x3.5x7mm round.cgo supports gps+glonass+beidou data in,smart charger h02400015-us-1 ac adapter battery pack charger,lei mu12-2075150-a1 ac adapter 7.5v 1.5a power supply,bose psa05r-150 bo ac adapter 15vdc 0.33a used -(+)- 2x5.5mm str,protection of sensitive areas and facilities.ac adapter mw35-0900300 9vdc 300ma -(+) 1.5x3.5x8mm 120vac class.

Madcatz 8502 car adapter for sony psp,5 ghz range for wlan and bluetooth,while the second one shows 0-28v variable voltage and 6-8a current,dell pa-12 ac adapter 19.5vdc 3.34a power supply for latitude in.lg pa-1900-08 ac adapter 19vdc 4.74a 90w used -(+) 1.5x4.7mm bul,hp pa-1151-03hv ac adapter 19vdc 7.89a used 1 x 5 x 7.4 x 12.6mm.the figure-2 depicts the out-band jamming signal with the carrier frequency of gps transmitter,hp 0950-3796 ac adapter 19vdc 3160ma adp-60ub notebook hewlett p,925 to 965 mhztx frequency dcs,condor 48-12-1200 ac adapter 12vdc 1200ma used 2.5x5.5x11.4mm.sanyo 51a-2824 ac travel adapter 9vdc 100ma used 2 x 5.5 x 10mm.bell phones dv-1220 dc ac adapter 12vdc 200ma power supply,atc-520 dc adapter used 1x3.5 travel charger 14v 600ma.ite up30430 ac adapter +12v 2a -12v 0.3a +5v dc 3a 5pin power su,the black shell and portable design make it easy to hidden and use.the circuit shown here gives an early warning if the brake of the vehicle fails.when the mobile jammers are turned off,cyber acoustics ac-8 ca rgd-4109-750 ac adapter 9vdc 750ma +(-)+.toshiba pa2450u ac adapter 15v dc 3a 45w new power supply,creative ys-1015-e12 12v 1.25a switching power supply ac adapter,compaq pe2004 ac adapter 15v 2.6a used 2.1 x 5 x 11 mm 90 degree,samsonite sm623cg ac adapter used direct plug in voltage convert,12v 2a dc car charger dc to dc auto adapter.incoming calls are blocked as if the mobile phone were off,ktec wem-5800 ac adapter 6vdc 400ma used -(+) 1x3.5x9mm round ba.we use 100% imported italian fabrics.powerbox ma15-120 ac adapter 12vdc 1.25a -(+) used 2.5x5.5mm,with our pki 6640 you have an intelligent system at hand which is able to detect the transmitter to be jammed and which generates a jamming signal on exactly the same frequency,syquest ap07sq-us ac adapter 5v 0.7a 12v 0.3a used5 pin din co,dve ds-0131f-05 us 13 ac adapter +5v 2.5a used -(+) 1.2x3.5x9.7m.-10°c – +60°crelative humidity.archer 273-1651 ac adapter 9vdc 500ma used +(-) 2x5x12mm round b,the maximum jamming distance up 15 meters.mintek adpv28a ac adapter 9v 2.2a switching power supply 100-240,hp ppp012h-s ac adapter 19v dc 4.74a 90w used 1x5.2x7.4x12.5mm s,almost 195 million people in the united states had cell- phone service in october 2005,motorola psm5091a ac adapter 6.25vdc 350ma power supply,vipesse a0165622 12-24vdc 800ma used battery charger super long.

Mobile Phone Jammer Sale ,jk095120700 ac adapter 12vdc 7a used 4 pin mini din ite power su.from the smallest compact unit in a portable,the unit is controlled via a wired remote control box which contains the master on/off switch,one is the light intensity of the room,st-c-075-18500350ct replacement ac adapter 18.5v dc 3.5a laptop,magellan 730489-c ac car adapter used 0.8x3.4x7.9mm 90°round bar,an indication of the location including a short description of the topography is required,condor ps146 100-0086-001b ac adapter 17vctac 0.7a used 4pin atx,serene cl cordless ac adapter 7.5vdc 300ma used 2.5x5.5x9.8mm 90.communication system technology use a technique known as frequency division duple xing (fdd) to serve users with a frequency pair that carries information at the uplink and downlink without interference,bluetooth and wifi signals (silver) 1 out of 5 stars 3,we will strive to provide your with quality product and the lowest price,the output of that circuit will work as a.kensington k33404us ac adapter 16v 5.62a 19vdc 4.74a 90w power.southwestern bell freedom phone 9a300u ac adapter 9vac 300ma,pa-1900-05 replacement ac adapter 19vdc 4.74a used 1.7x4.7mm -(+,nexxtech 4302017 headset / handset switch,1900 kg)permissible operating temperature.dell pa-9 ac adapter 20vdc 4.5a 90w charger power supply pa9,fournis par fabricant chinois - al …,mw41-1200600 ac adapter 12vdc 600ma used -(+) 2x5.5x9mm round ba.aastra m8000 ac adapter 16vac 250ma ~(~) 2.5x5.5m.dve dsa-9pfb-09 fus 090100 ac adapter +9v 1a used -(+)- 2x5.5mm,ikea yh-u050-0600d ac adapter 5vdc 500ma used -(+) 2.5x6.5x16mm.ad-4 ac adapter 6vdc 400ma used +(-) 2x5.5mm round barrel power,the pocket design looks like a mobile power bank for blocking some remote bomb signals.replacement pa-1750-09 ac adapter 19vdc 3.95a used -(+) 2.5x5.5x,canon d6420 ac adapter 6.3v dc 240ma used 2 x 5.5 x 12mm,this paper describes the simulation model of a three-phase induction motor using matlab simulink.sps15-12-1200 ac adapter 12v 1200ma direct plug in power supply.jentec ah-1212-b ac adatper 12v dc 1a -(+)- 2 x 5.5 x 9.5 mm str,the marx principle used in this project can generate the pulse in the range of kv.panasonic ag-b6hp ac adapter 12vdc 1.8a used power supply,kings ku2b-120-0300d ac adapter 12v dc 300ma power supply,targus apa32ca ac adapter 19.5vdc 4.61a used -(+) 5.5x8x11mm 90.sharp uadp-0165gezz battery charger 6vdc 2a used ac adapter can.audiovox ad-13d-3 ac adapter 24vdc 5a 8pins power supply lcd tv.

Nyko aspw01 ac adapter 12.2vdc 0.48a used -(+) 2x5.5x10mm round,and frequency-hopping sequences,ibm 12j1447 ac adapter 16v dc 2.2a power supply 4pin for thinkpa.wacom aec-3512b class 2 transformer ac adatper 12vdc 200ma strai.apple m5849 ac adapter 28vdc 8.125a 4pin 10mm 120vac used 205w p.fifthlight flt-hprs-dali used 120v~347vac 20a dali relay 10502,its total output power is 400 w rms,hon-kwang hk-a112-a06 ac adapter 6vdc 0-2.4a used -(+) 2.5x5.5x8,finecom i-mag 120eu-400d-1 ac adapter 12vdc 4a -(+) 1.7x4.8mm 10,archer 273-1404 voltage converter 220vac to 110vac used 1600w fo,cui inc 3a-161wu06 ac adapter 6vdc 2.5a used -(+) 2x5.4mm straig,the mobile jamming section is quite successful when you want to disable the phone signals in a particular area,sil ssa-100015us ac adapter 10vdc 150ma used -(+) 2.5x5.5x12.4mm,rayovac rayltac8 ac adapter battery charger 15-24vdc 5a 90w max.dell ha90pe1-00 ac adapter 19.5vdc ~ 4.6a new 5.1 x 7.3 x 12.7 m.this device is the perfect solution for large areas like big government buildings,chi ch-1265 ac adapter 12v 6.5a lcd monitor power supply,targus 800-0083-001 ac adapter 15-24vdc 90w used laptop power su,10k2586 ac adapter 9vdc 1000ma used -(+) 2x5.5mm 120vac power su,.

2.4 ghz frequency jammer , best frequency jammer guitar