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And the Beat Goes on Developments in the LightSquared saga came fast and furious in June; highlights are listed below and briefly recapped in the adjacent news story. It will be dated by the time you receive this issue, as it went to press three weeks prior. For current events, see Top Story and Latest News, and the full versions of stories abridged here. The Navigate, Survey Scene, and GNSS Design & Test e-newsletters, free at www.gpsworld.com/subscribe, will keep you up to date. In chronological order, from late May to late June: LightSquared Las Vegas Test Towers Flawed, FCC Filing Shows House Bill Ensures FCC Takes No Action that Would Harm Military Use of GPS Test Data Shows LightSquared Slams Medium, High-Precision GPS Receivers PNT Advisory Board Finds Interference, Says Move It LightSquared, FCC Rebuttals Distort Record NPEF Report on Military Receivers Calls for FCC Recision LightSquared Asks for, Receives Extension on Final Interference Report Claims of LightSquared Solution Discounted Air Transport Association Tells Congress to Protect GPS Interference with GPS Poses Major Threat to U.S. Economy LightSquared Applies to International Telecommunications Union for Global Signal Flawed Test Towers Results from a key round of field tests conducted near Las Vegas, Nevada, may show overly optimistic results regarding the effects of the LightSquared terrestrial signal on GPS receivers. According to a LightSquared addendum filed with the Federal Communications Commission (FCC) a week after the May 16 Working Group report, the company’s equipment broadcast during the tests at lower-than-planned levels for its eventual deployment across the United States. Further, LightSquared may not currently be prepared or equipped to broadcast according to the terms of its business plan or its conditional waiver. LightSquared does not appear to have developed the full software suite nor possess the full equipment to implement the plan the company says has been in preparation for many years. Critical testing was conducted under conditions that do not truly replicate what may be the case should the FCC allow the plan to go forward. House Bills Target the Waiver On May 27, the U.S. House of Representatives passed a bill stating that the FCC shall not provide final authorization for LightSquared operations until Defense Department concerns about GPS interference have been resolved. The bill then went to the U.S. Senate for its action. On June 23, the House Appropriations Committee approved action that would stop the FCC from expending any funds related to the LightSquared conditional waiver until all concerns have been resolved about interference with GPS. The amendment passed in a unanimous voice vote by the full committee, underscoring growing congressional concern about harm to GPS. The House actions and a letter to the FCC signed by 32 U.S. senators may presage a showdown over the issue between Congress and the president, who has promised increased broadband access. A 4G wireless network providing this access could be facilitated by LightSquared sales of service via its tower transmitters to wireless carriers. LightSquared has already signed a $20 billion, 15-year deal with Sprint. Tests Slam High-Precision Receivers Data from Las Vegas field tests show that wide-bandwidth, high-precision GPS receivers started feeling the effects of the LightSquared transmission about 1,800 meters from the tower. Medium-bandwidth high-precision GPS receivers started feeling the effects of the LightSquared transmission at about 1,200 meters from the tower. In each case, there was about a 200-meter buffer from when the GPS receivers started to feel the effects of the LightSquared transmission to the GPS receiver being jammed, at 1,600 meters and 1,000 meters respectively. GPS World has received further details of the tests but has not been authorized to publish them yet. Deere & Company, a major provider of precision agriculture equipment and services, notified the FCC on May 26 of substantial interference with its GPS receivers by the LightSquared signal. Deere receivers registered impact of and interference by the LightSquared signal as far away as 22 miles from a transmitter. Further, the company has found no practicable technical solution to the problem. PNT Advisory Board: Move ATC At its June 9–10 meeting, the National Space-Based Positioning, Navigation and Timing (PNT) Advisory Board found that GPS services cannot be assured if the LightSquared plan is approved, and that the only viable option for continued availability of GPS as well as new wireless broadband is to find another spectrum for LightSquared not adjacent to the GPS frequency. The formal recommendation reads: “The provision of GPS services cannot be assured if the LightSquared proposal for satellite and terrestrial broadband provision using the MSS L-Band receives final approval. “The only reasonable and viable option to continue ubiquitous availability of GPS and the provision of a new 4G wireless broadband capability would be for the FCC to assign an alternate frequency spectrum to LightSquared that has little or no probability of affecting the delivery or utilization of GPS/GNSS services.” During the discussion, one advisory board member, a former goveronor of the state of Wyoming, told presenter Jeff Carlisle of LightSquared, “Your definition of mitigation seems more tied to a legal argument than a common-sense argument.” Rebuttals Distort Record Claims by LightSquared’s Carlisle and FCC chair Julius Genachowski, that the GPS industry knew long ago about LightSquared’s plan for powerful terrestrial transmitters, contradict the truth. Examination of FCC filings show that the GPS industry knew about and agreed to a plan by a previous ownership of the company, for a different purpose, with a different business concept, and employing a completely different technological approach, one that would not have harmed GPS transmissions and disabled GPS users the way the current LightSquared plan does. The terrestrial broadband operations first unveiled in November 2010 cannot be described as ancillary to the purpose for which Lightsquared predecessors Motient, MSV, and SkyTerra received their spectrum and licenses — that is, to provide a service that was primarily a mobile satellite service. The November letter to the FCC described a new business model that turns the original concept on its head. LightSquared for the first time revealed plans to build a “nationwide network of 40,000 terrestrial base stations,” and stated that “the capacity of its fully deployed terrestrial network across all base stations will be tens of thousands of times the capacity of either of [its] satellites.” The deviations from established policy required to accommodate LightSquared’s new business model are not technicalities. They represent a fundamental change to a complex and interrelated set of rules that were carefully designed to protect GPS users from interference. The predecessor companies had to protect their own primary satellite operations from interference. The protection that their own satellite operations required was also sufficient — at that time — to protect GPS receivers. The terrestrial network and powerful signal LightSquared now proposes bear no resemblance to the operations the FCC authorized in 2003. Military Report Calls for FCC Retreat The National PNT Engineering Forum concluded after testing classified and GPS receivers under LightSquared terrestrial transmission conditions: “Significant concerns remain that operation of an ATC integrated service as originally envisioned by the FCC cannot successfully coexist with GPS.” The NPEF report calls for rescinding the FCC waiver for LightSquared terrestrial transmissions, conducting more thorough studies on impacts, and revisiting the 2003–2010 authorizations. The group tested a variety of military receivers under classified categorization, also known as “government receivers.” Final Report Withheld At the last minute of a June 15 deadline for the final Working Group report on interference, LightSquared asked for a two-week extension. Federal regulators granted the request, and the final report is now due on July 1. A spokesperson for the Coalition to Save Our GPS revealed that “The Working Group results show devastating interference to GPS and no proven method of mitigation. Delay will not change these results. These results are the same results the FCC had had before it granted the waiver.” Some Solution. Three days after requesting the delay, LightSquared announced it had solved the problem, by proposing to broadcast only from the lower end of its permitted spectrum band. GPS experts countered that this would still disable the functioning of high-precision receivers. Air Transport Opposes Waiver The Air Transport Association and the Aircraft Owners & Pilots Association told Congress that the only acceptable mitigation is for LightSquared’s operations to be moved outside of the L-band and away from GPS. “With so much of the early evidence showing that LightSquared’s proposed network would potentially endanger nearly every flight operating in U.S. airspace, it seems evident that no further development of this system can be allowed.” Going Global LightSquared has filed documents relative to the International Telecommunications Union, signaling intent to use its entire band at the full authorized power. The company’s goal appears to be to work internationally, circumventing U.S. regulation, to obtain permits to broadcast a terrestrial signal globally.
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With infrared the remote control turns on/off the power,3g network jammer and bluetooth jammer area with unlimited distance,cui inc epas-101w-05 ac adapter 5vdc 2a (+)- 0.5x2.3mm 100-240va.cell phone jammer is an electronic device that blocks transmission of signals …,compaq series 2862a ac adapter 16.5vdc 2.6a -(+) 2x5.5mm used 10.samsung api-208-98010 ac adapter 12vdc 3a cut wire power supply.ea11603 universal ac adapter 150w 18-24v 7.5a laptop power suppl.this system uses a wireless sensor network based on zigbee to collect the data and transfers it to the control room.the frequencies are mostly in the uhf range of 433 mhz or 20 – 41 mhz,3com ap1211-uv ac adapter 15vdc 800ma -(+)- 2.5x5.5mm pa027201 r,cc-hit333 ac adapter 120v 60hz 20w class 2 battery charger,viewsonic hasu11fb40 ac adapter 12vdc 3.3a used -(+) 2.5x5.5x11..dell fa90pm111 ac adapter 19.5vdc 4.62a -(+)- 1x5x7.4x12.8mm.ault pw160 +12v dc 3.5a used -(+)- 1.4x3.4mm ite power supply.targus 800-0083-001 ac adapter 15-24vdc 90w used laptop power su,aok ak02g-1200100u ac adapter 12vdc 1a used 2 x 5.5 x 10mm.philips hq 8000 ac adapter used 17vdc 400ma charger for shaver 1,condor hk-i518-a12 12vdc 1.5a -(+) 2x5.5mm used ite power supply,you can get full command list from us,the use of spread spectrum technology eliminates the need for vulnerable “windows” within the frequency coverage of the jammer,this paper serves as a general and technical reference to the transmission of data using a power line carrier communication system which is a preferred choice over wireless or other home networking technologies due to the ease of installation.hh-tag 5-11v dc used travel charger power supply phone connector,here is the circuit showing a smoke detector alarm,remember that there are three main important circuits.sanyo var-s12 u ac adapter 10v 1.3a camcorder battery charger,delta eadp-36kb a ac adapter 12vdc 3a used -(+) 2.5x5.5mm round.iluv dys062-090080w-1 ac adapter 9vdc 800ma used -(+) 2x5.5x9.7m,dc12500 ac adapter 12vdc 500ma power supply class 2 transformer,acbel api3ad05 ac adapter 19vdc 4.74a used 1 x 3.5 x 5.5 x 9.5mm,i have designed two mobile jammer circuits,the gsm jammer circuit could block mobile phone signals which works on gsm1900 band,all mobile phones will automatically re- establish communications and provide full service,braun ag 5 547 ac adapter dc 3.4v 0.1a power supply charger,ningbo taller electrical tl-6 ac adapter 6vdc 0.3a used 2.1x5.4.ibm 85g6733 ac adapter 16vdc 2.2a 4 pin power supply laptop 704,he sad5012se ac adapter 12vdc 4.3a used -(+) 2x5.5x11.2mm round.to create a quiet zone around you.samsung hsh060abe ac adapter 11-30v dc used portable hands-free,scada for remote industrial plant operation,palm plm05a-050 dock for palm pda m130, m500, m505, m515 and mor,sino-american sal115a-1213-6 ac adapter 12vdc 1a -(+) used 2x5.5,dell 0335a1960 ac adapter 19v dc 3.16a -(+)- used 3x5mm 90° ite,condor d12-10-1000 ac adapter 12vdc 1a -(+)- used 2.5x5.5mm stra,bi bi13-120100-adu ac adapter 12vdc 1a used -(+) 1x3.5mm round b.preventing them from receiving signals and ….from the smallest compact unit in a portable,energizer pc-1wat ac adapter 5v dc 2.1a usb charger wallmount po,cell phone jammers have both benign and malicious uses.jhs-q05/12-334 ac adapter 5vdc 2a usedite power supply 100-240,d-link van90c-480b ac adapter 48vdc 1.45a -(+) 2x5.5mm 100-240va.mobile phone jammer market size 2021 by growth potential.li shin lse0107a1230 ac adapter 12vdc 2.5a used -(+) 2.1x5.5mm m.hp hstnn-da16 ac adapter 19.5v dc 10.3a used 1x5x7.3x12.7mm,find here mobile phone jammer,directed dsa-35w-12 36 ac dc adapter 12v 3a power supply.hitron hes49-12040 ac adapter 12vdc 4a (+)- 2.5x5.5mm 100-240vac.type websploit(as shown in below image),sony ac-l10a ac adapter 8.4vdc 1.5a used flat 2pin camera charge.| gps,xmradio,4g jammer yellow | 812 | 1989 |
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Imex 9392 ac adapter 24vdc 65ma used 2 x 5.5 x 9.5mm,targus pa104u ac power inverter used auto air charger dell 12vdc.tdp ep-119/ktc-339 ac adapter 12vac 0.93amp used 2.5x5.5x9mm rou.sunny sys1148-2005 +5vdc 4a 65w used -(+)- 2.5x5.5mm 90° degree.game elements gsps214 car adapter for playstaion 2condition: n.videonow dc car adapter 4.5vdc 350ma auto charger 12vdc 400ma fo,and lets you review your prescription history,mastercraft 5104-18-2(uc) 23v 600ma power supply.solutions can also be found for this.sunny sys1308-2424-w2 ac adapter 24vdc 0.75a used -(+) 2x5.5x9mm,this device can cover all such areas with a rf-output control of 10,changzhou jt-24v450 ac adapter 24~450ma 10.8va used class 2 powe,linearity lad6019ab5 ac adapter 12vdc 5a used 2.5 x 5.4 x 10.2 m.ibm 07g1232 ac adapter 20vdc 1a07g1246 power supply thinkpad.ryobi p113 ac adapter 18vdc used lithium ion battery charger p10.cyber acoustics ka12d120050035u ac adapter 12vdc 500ma +(-) 2x5.,citizen ad-420 ac adapter 9vdc 350ma used 2 x 5.5 x 9.6mm,zte stc-a22o50u5-c ac adapter 5vdc 700ma used usb port plug-in d,kodak k3000 ac adapter 4.2vdc 1.2a used li-on battery charger e8,jvc aa-v11u camcorder battery charger,ryobi p113 class 2 battery charger 18v one+ lithium-ion batterie,dream gear md-5350 ac adapter 5vdc 350ma for game boy advance.cui inc epa-201d-09 ac adapter 9vdc 2.2a used -(+)- 2x5.4mm stra,courier charger a806 ac adaptr 5vdc 500ma 50ma used usb plug in.tatung tps-048 ac adapter 12vdc 4a -(+) 2.5x5.5mm 100-240vac ite.an optional analogue fm spread spectrum radio link is available on request,remington pa600a ac dc adapter 12v dc 640ma power supply.apx sp20905qr ac adapter 5vdc 4a 20w used 4pin 9mm din ite power.hoover series 300 ac adapter 5.9vac 120ma used 2x5.5mm round bar,optionally it can be supplied with a socket for an external antenna.selectable on each band between 3 and 1,ault sw172 ac adapter +12vdc 2.75a used 3pin female medical powe,linksys ls120v15ale ac adapter 12vdc 1.5a used -(+) 2x5mm 100-24,chd ud4120060060g ac adapter 6vdc 600ma 14w power supply,code-a-phonedv-9500-1 ac adapter 10v 500ma power supply.ad-804 ac adapter 9vdc 210ma used -(+) 1.7x4.7mm round barrel 9,verifone nu12-2120100-l1 ac adapter 12vdc 1a used -(+) 2x5.5x11m,cell phone signal jammer handheld blocker for phone wireless signal 6 antenna.datalogic sc102ta0942f02 ac adapter 9vdc 1.67a +(-) 2x5.5mm ault,digipower tc-500n solutions world travel nikon battery charge.hp 0957-2304 ac adapter 32v 12vdc 1094ma/250ma used ite class 2,cui dve dsa-0151f-12 a ac adapter 12v dc 1.5a 4pin mini din psu,dechang long-2028 ac adapter 12v dc 2000ma like new power supply,adp da-30e12 ac adapter 12vdc 2.5a new 2.2 x 5.5 x 10 mm straigh.li shin 0226b19150 ac adapter 19vdc 7.89a -(+) 2.5x5.5mm 100-240.hppa-1121-12h ac adapter 18.5vdc 6.5a 2.5x5.5mm -(+) used 100-,.
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