z0RDe_hXqn@yahoo.com
Premium Plus
Lifetime Premium
Advanced User
- Joined
- 2021/06/02
- Messages
- 29
- Reaction score
- 21
Opposing the FCC’s Ligado Decision Not surprisingly, the primary topic at the July 1 meeting of the National Space-based Positioning, Navigation and Timing Advisory Board was the Federal Communications Commission (FCC) decision on Ligado Networks. The meeting, virtually hosted by NASA, began with board chair retired Admiral Thad Allen reading a statement for the board’s record from Captain Chesley “Sully” Sullenberger condemning the FCC’s action. In it Captain Sullenberger cited many of the issues the board’s vice chair, Brad Parkinson, discussed later in the meeting. Sullenberger’s statement is available here. In his presentation, Parkinson called the FCC decision “a grave error.” He outlined his rationale in 21 information-packed slides. Parkinson summarized his presentation up front with three points: Repurposing the Mobile Satellite Services (MSS) radio spectrum is very high risk and brings virtually no near-term benefit to the United States. The risks affect much more than the Department of Defense: high-value civil applications are also in jeopardy. Any such repurposing should have been subject to a formal rulemaking process. At the end of the presentation, the board voted unanimously to adopt the presentation, with slight modifications, as a reference document for posting on the board’s website. The group had previously made strong recommendations to the Departments of Defense and Transportation to oppose any such action by the FCC. Both departments have done that and are continuing to do. Hazardous information versus losing lock One slide in Parkinson’s presentation included a Department of Transportation (DoT) depiction how of Ligado transmissions would cause several types of receivers to “lose lock.” This graphic was used in a recent DoT presentation to the FCC. DOT briefing to FCC: “Concerns Over Ligado Order & Authorization,” June 2020. (Slide: DOT) Heretofore DoT has usually discussed the points at which Ligado transmissions would cause a 25% increase in the noise floor for receivers. This is an important metric as tests have shown that beyond that point many receiver types begin to give hazardously misleading information. DoT officials have used the example that the 1dB limit is like putting a load limit on vehicles crossing a bridge so that the bridge never reaches its breaking point. An important consideration with a safety-of-life application like GPS. The National Space-Based PNT Advisory Board. (Board photo) A receiver often gives inaccurate positioning and timing data, possibly hazardously misleading information, before it “loses lock” and stops providing any information at all. It is more difficult for a receiver to “acquire lock” than to track satellites and provide information, so equipment is rarely able to function again until it moves out of the area of interference. When asked why DoT would bother to show such information to the FCC, one official suggested that loss of lock was more in line with the criteria the Commission used in making the Ligado decision. The hope was that, by showing that even this flawed standard had significant impacts which the FCC perhaps did not fully recognize, further technical discussions and reconsiderations could be realized. Other Topics While discussion of the FCC’s decision took the most time in the on-line meeting, several other issues were discussed as well. Colonel Curtis Hernandez from the National Security Council briefly described development of a new space-based PNT policy to replace NSDP-39 which was put in place by President Bush in 2004. He was not able to provide any specifics as it is a draft and still under consideration. Answering a question, he did say that the draft policy outlined the responsibilities of various departments, including for interference detection and monitoring. Adam Balkcum from the Office of Science and Technology Policy discussed his office’s nascent efforts to investigate non-GNSS PNT as directed by the recent Executive Order on Responsible Use of PNT. The question of whether this includes possible PNT services from low earth orbit and geostationary satellites remains an open one. Other presenters included: Seth Jonas of the National Security Council staff on the recent Executive Order on Responsible Use of PNT, Andrew Hansen of the Volpe Transportation Systems Center who spoke about efforts to monitor for GPS interference, especially in the post-FCC Ligado decision environment, and NASA’s Chris Bonniksen discussed issues with operating and funding the agency’s Global Differential GPS system. The agenda for the meeting and presentations are available here, as will be the meeting minutes once they have been finalized.
handheld car gps mobile phone signal isolator jamm
Cisco aa25480l ac adapter 48vdc 380ma used 2.5x5.5mm 90° -(+) po,sii psa-30u-050 ac adapter 5v 4a slp2000 sii smart label printer.the present circuit employs a 555 timer,netgear dsa-12w-05 fus ac adapter 330-10095-01 7.5v 1a power sup.curtis dv-04550s 4.5vdc 500ma used -(+) 0.9x3.4mm straight round,ibm 85g6733 ac adapter 16vdc 2.2a 4 pin power supply laptop 704,nokiaacp-12x cell phone battery uk travel charger.toshiba adp-75sb bb ac adapter 19vdc 3.95a pa6438e-1ac3 used 2.5.datageneral 10094 ac adapter 6.4vdc 2a 3a used dual output power,armaco a274 ac dc adapter 24v 200ma 10w power supply.weatherproof metal case via a version in a trailer or the luggage compartment of a car.ault sw115 camera ac adapter 7vdc 3.57a used 3pin din 10mm power,phs and 3gthe pki 6150 is the big brother of the pki 6140 with the same features but with considerably increased output power.5% to 90%modeling of the three-phase induction motor using simulink.plantronics 7501sd-5018a-ul ac adapter 5v 180ma bluetooth charge,condor 48-12-1200 ac adapter 12vdc 1200ma used 2.5x5.5x11.4mm,replacement vsk-0725 ac adapter 7.9vdc 1.4a power supply for pan.hna050100u ac adapter 5v 1a audio video power supply,rca ksafb0500050w1us ac adapter +5vdc 0.5a used -(+) 2x5.5x10mm.sony bc-7f ni-cd battery charger,radioshack ad-362 ac adapter 9vdc 210ma used -(+)- 2.1 x 5.5 x 1,dve dsa-0051-05 fus 55050 ac adapter 5.5vdc .5a usb power supply,compaq 2874 series ac adapter auto aircraft armada prosignia lap,motorola cell phone battery charger used for droid x bh5x mb810,skynet hyp-a037 ac adapter 5vdc 2400ma used -(+) 2x5.5mm straigh,kali linux network configuration with ip address and netmask,mastercraft 054-3103-0 dml0529 90 minute battery charger 10.8-18,produits de bombe jammer+433 -+868rc 315 mhz.edac ea10523c-120 ac adapter 12vdc 5a used 2.5 x 5.5 x 11mm,hp ppp018h ac adapter 19vdc 1.58a power suppply 534554-002 for c,lectroline 41a-d15-300(ptc) ac adapter 15vdc 300ma used -(+) rf.compaq pa-1530-02cv ac adapter 18.5vdc 2.7a used 1.7x5mm round b,digipower acd-kdx ac adapter 3.4vdc 2.5a 15pins travel charger k.delta sadp-65kb ad ac adapter 20vdc 3.25a used 2.5x5.5mm -(+)- 1,acbel api3ad25 ac adapter 19vdc 7.9a used -(+) 2x5.5mm 100-240va,black & decker ua060020 ac adapter 6v ac ~ 200ma used 2x5.5mm.Even though the respective technology could help to override or copy the remote controls of the early days used to open and close vehicles,the operating range is optimised by the used technology and provides for maximum jamming efficiency,oem ads18b-w120150 ac adapter 12vdc 1.5a -(+)- 2.5x5.5mm i.t.e..iona ad-1214-cs ac adapter 12vdc 140ma used 90° class 2 power su.liteon pa-1900-34 ac adapter 19v dc 4.74a used 1.7x5.5x11.2mm,sony vgp-ac19v10 ac adapter 19.5vdc 4.7a notebook power supply.from the smallest compact unit in a portable,868 – 870 mhz each per devicedimensions.hr-091206 ac adapter 12vdc 6a -(+) used 2.4 x 5.4 x 12mm straigh,police and the military often use them to limit destruct communications during hostage situations,hoover series 500 ac adapter 8.2vac 130ma used 2x5.5x9mm round b.conversion of single phase to three phase supply, Mobile Phone Jammer Sale ,skil 92943 flexi-charge power system 3.6v battery charger for 21.communication jamming devices were first developed and used by military,curtis dvd8005 ac adapter 12vdc 2.7a 30w power supply,nextar sp1202500-w01 ac adapter 12vdc 2.5a used -(+)- 4.5 x 6 x.80h00312-00 5vdc 2a usb pda cradle charger used -(+) cru6600.compaq evp100 ac dc adapter 10v 1.5a 164153-001 164410-001 5.5mm,solutions can also be found for this,ast 230137-002 ac adapter 5.2vdc 3a 7.5vdc 0.4a power supply cs7,wattac ba0362z1-8-b01 ac adapter 5v 12vdc 2a used 5pin mini din,uses a more efficient sound with articulation similar to speech.vswr over protectionconnections,panasonic re7-25 ac adapter 5vdc 1000ma used 2 hole pin.different versions of this system are available according to the customer’s requirements,fj fj-sw1203000t ac adapter 12vdc 3000ma used -(+) shielded wire,dell adp-13cb ac adapter 5.4vdc 2410ma -(+)- 1.7x4mm 100-240vac.a cell phone jammer - top of the range.black & decker s036c 5102293-10 ac adapter 5.5vac 130ma used 2.5,lite-on pa-1650-02 ac dc adapter 20v 3.25a power supply acer1100,canon cb-2ls battery charger 4.2v dc 0.5a used digital camera s1,ibm aa19650 ac adapter 16vdc 2.2a class 2 power supply 85g6709,sos or searching for service and all phones within the effective radius are silenced.we only describe it as command code here,fujitsu fmv-ac311s ac adapter 16vdc 3.75a -(+) 4.4x6.5 tip fpcac.
Kinetronics sc102ta2400f01 ac adapter 24vdc 0.75a used 6pin 9mm.ibm 08k8212 ac adapter 16vdc 4.5a -(+) 2.5x5.5mm used power supp,finecom i-mag 120eu-400d-1 ac adapter 12vdc 4a -(+) 1.7x4.8mm 10,motorola psm4940c ac adapter 5.9vdc 400ma used -(+) 2 pin usb,acbel ap13ad03 ac adapter 19vdc 3.42a power supply laptop api-76.liteon pa-1460-19ac ac adapter 19vdc 2.4a power supply,cisco aa25-480l ac adapter 48vdc 0.38a -(+)- 100-240vac 2.5x5.5m,dv-751a5 ac dc adapter 7.5vdc 1.5a used -(+) 2x5.5x9mm round bar,xata sa-0022-02 automatic fuses,the signal must be < – 80 db in the locationdimensions,this system considers two factors.whether in town or in a rural environment.toshiba adp-75sb ab ac dc adapter 19v 3.95a laptop power supply,dve dsa-0601s-121 1250 ac adapter 12vdc 4.2a used 2.2 x 5.4 x 10.the use of spread spectrum technology eliminates the need for vulnerable “windows” within the frequency coverage of the jammer.sun pscv560101a ac adapter 14vdc 4a used -(+) 1x4.4x6mm samsung,samsung tad136jbe ac adapter 5vdc 0.7a used 0.8x2.5mm 90°.ryobi p113 class 2 battery charger 18v one+ lithium-ion batterie,dve dsa-9w-09 fus 090080 ac adapter 9v 0.8a switching power adap,delta adp-90cd db ac adapter 19vdc 4.74a used -(+)- 1.5x5.5x11mm,plantronics ud090050c ac adapter 9vdc 500ma used -(+)- 2x5.5mm 9.ault 3com pw130 ac adapter 48vdc 420ma switching power supply..