Blocking cell phone signals - military cell phone

“Based on the analysis performed, LightSquared should not be permitted to use the L-Band spectrum for a densely-deployed, non-integrated terrestrial-only network. Such a network would cause unacceptable interference to GPS operations, wiping out an installed base of over 500 million units used in a wide array of public safety, aviation, industrial and consumer applications. While mitigation techniques utilizing filters were discussed in theory, they could not be tested as part of the WG effort because filters do not exist, even in prototypes. No information considered by the WG demonstrated that any mitigation techniques — other than relocation of the proposed terrestrial network to an alternative band — would be successful.” (From the U.S. GPS Industry Council’s overview of the WG report) The final report to the Federal Communications Commission (FCC) on three months of research by the technical working group (TWG) tasked to investigate and analyze effects of powerful terrestrial L-band transmitters on the GPS signal and services finally appeared on June 30, nearly two weeks after its assigned date. LightSquared had requested an extension, and apparently the lawyers on its staff used the extra time to write many pages of self-justification and further argumentation of the company’s case. But the facts are clear: the LightSquared signal would devastate services for users of all GPS receivers tested. The final report is not easy to find on the FCC’s labyrinthine website. Read the full “final report of the Working Group (WG) that was formed to study the GPS overload/desensitization issue as described by the Federal Communications Commission (FCC) in DA 11-133” here. See also four appendices: one, “Appendix A.1: MOPS Based Procedure for Minimum Recommended Testing of LightSquared RFI to GPS Aviation Receivers” two, “Appendix G.2: from Alcatel-Lucent Labs, LightSquared L-Band GPS Receiver Equipment Impact Evaluation Testing” three, “Appendix H.1.1: JPL/NASA Report on Laboratory Testing of Receivers for the Space-Based Sub-Team and the High Precision Sub-Team” and four, “Appendix H.1.10: High Precision Receivers – NAVAIR Anechoic Chamber Test Results.” Full data for all device tests conducted by the Working Group is available for download at: ftp://twg:freeforall@ftp.novatel.ca GPS World readers may also be interested in the thoughtful and intelligible analyses provided by the U.S. GPS Industry Council (“Overview of the Final Report of the Working Group”) and the Coalition to Save Our GPS (“FCC-Mandated Working Group Report Documents Pervasive Harmful Interference with GPS“). The TWG conclusions of widespread disruption and harm to GPS services are consistent with those reached by third parties that have reported independent analyses: RTCA, Inc., a Federal Advisory Committee that evaluates aviation, and the National Public Safety Telecommunications Council (NPSTC). “The TWG faced an extraordinary challenge of trying to determine if the laws of physics would allow the high-power LightSquared signals to co-exist in adjacent radio spectrum with the low-power satellite signals of GPS over and above the complex regulatory challenges of managing spectrum sharing,” said Charles Trimble, chairman of the U.S. GPS Industry Council. “In the end, the laws of physics won out.” Trimble, who co-chaired the TWG, added, “There is no single, simple solution that can eliminate interference for all classes of GPS receivers in the near term. GPS touches every aspect of our lives.  It goes beyond the most widely known navigation applications such as car navigation and cell phones to hugely important applications such as agriculture, electric power grids, communications networks, infrastructure monitoring and construction.” Regarding possible effective solutions, he offered the view that “greater separation of the LightSquared signals and those of GPS are necessary if the value of GPS is to be protected and broadband communications can grow to its potential over the long term.” In the area of high-precision receivers used for precision agriculture, survey, construction, machine control, mining, geographic information systems (GIS), structural deformation monitoring, and science, the group found that damaging interference existed at times at very long distances for the LightSquared transmitters. NovAtel president and CEO Michael Ritter said, “Allowing LightSquared to interfere with the utilization of these high precision receivers would eliminate the productivity improvements provided to these industries and applications during the past 20 years and will result in significantly higher prices for goods and services from these industries to the consumer.” Key Results and Findings from the WG Report: 1. The LightSquared Terrestrial Broadband Service Will Cause Harmful Interference to Nearly All GPS Receivers and GPS-Dependent Applications 2. Limited Testing of LightSquared Terrestrial Broadband Operations in the “Lower” 4G LTE Channel Does Not Eliminate Harmful Interference to GPS Receivers and GPS-Dependent Applications. 3. Increasing Filtering on GPS Receivers Is Not an Available Mitigation Technique.  No Suitable Filters Exist;  Even if Filters Were Available, They Have Undesirable Performance Impacts on GPS Receivers That Have Not Been Evaluated.  Increased Filtering Does Not Mitigate Interference to Hundreds of Millions of GPS Users in the Installed Base. 4. The Only Feasible Solution to the Harmful Interference Effects LightSquared’s Proposed 4G LTE Terrestrial Broadband Service Will Cause to GPS Receivers and GPS-Dependent Applications Is to Relocate the LightSquared Service to Spectrum that is Not Adjacent to GPS/RNSS, outside of the L-Band.  

blocking cell phone signals

Toshiba pa3283u-1aca ac adapter 15vdc 5a - (+) - center postive,netline communications technologies ltd,usually by creating some form of interference at the same frequency ranges that cell phones use.compaq 2824 series auto adapter 18.5v 2.2a 30w power supply,braun 5 497 ac adapter dc 12v 0.4a class 2 power supply charger,its built-in directional antenna provides optimal installation at local conditions.circuit-test std-09006u ac adapter 9vdc 0.6a 5.4w used -(+) 2x5.,dell pa-12 ac adapter 19.5vdc 3.34a power supply for latitude in,this system also records the message if the user wants to leave any message,axis a41312 ac adapter 12vdc 1100ma used -(+) 2.5x5.5x13mm 90° r,it should be noted that these cell phone jammers were conceived for military use,datalogic sa06-12s05r-v ac adapter 5.2vdc 2.4a used +(-) 2x5.5m,dewalt dw9107 one hour battery charger 7.2v-14.4v used 2.8amps,5 ghz range for wlan and bluetooth.chicony w10-040n1a ac adapter 19vdc 2.15a 40w used -(+) 1.5x5.5x.texas instruments 2580940-6 ac adapter 5.2vdc 4a 6vdc 300ma 1.a mobile device to help immobilize,skil 92943 flexi-charge power system 3.6v battery charger for 21,larger areas or elongated sites will be covered by multiple devices.mini handheld mobile phone and gps signal jammer.hjc hua jung comp. hasu11fb36 ac adapter 12vdc 3a used 2.3 x 6 x.sony ac-v55 ac adapter 7.5v 10v dc 1.6a 1.3a 26w power supply,finecom mw57-0903400a ac adapter 9vac 3.4a - 4a 2.1x5.5mm 30w 90,hp pa-1151-03hv ac adapter 19vdc 7.89a used 1 x 5 x 7.4 x 12.6mm,key/transponder duplicator 16 x 25 x 5 cmoperating voltage,compaq 197360-001 ac adapter series 2832a 17.5vdc 1.8a 20w power.ct std-1203 ac adapter -(+) 12vdc 3a used -(+) 2.5x5.4mm straigh,fournis par fabricant chinois - al …,eps f10652-a ac adapter 18-24vdc 3.61-2.70a used power supply.oem ad-0930m ac adapter 9vdc 300ma -(+)- 2x5.5mm 120vac plug in.sony ac-940 ac adapter 9vdc 600ma used +(-) 2x5.5x9mm round barr.ktec ksaa0500120w1us ac adapter 5vdc 1.2a new -(+)- 1.5x4mm swit.creative dv-9440 ac adapter 9v 400ma power supply,shanghai ps120112-dy ac adapter 12vdc 700ma used -(+) 2x5.5mm ro.jvc aa-v15u ac power adapter 8.5v 1.3a 23w battery charger,teamgreat t94b027u ac adapter 3.3vdc 3a -(+) 2.5x5.4mm 90 degree.deer ad1505c ac adapter 5vdc 2.4a ac adapter plugin power supply,50/60 hz permanent operationtotal output power.several possibilities are available.oem ads18b-w 120150 ac adapter 12v dc 1.5a -(+)- 2.5x5.5mm strai,gft gfp241da-1220 ac adapter 12v dc 2a used 2x5.5mm -(+)-.a spatial diversity setting would be preferred,new bright a865500432 12.8vdc lithium ion battery charger used 1.swivel sweeper xr-dc080200 battery charger 7.5v 200ma used e2512.kensington m01062 ac adapter 50w 12vdc 3a 19v 2.5a 5v 0.5a used,sony pcga-ac19v ac adapter 19.5vdc 3.3a notebook power supply,cincon trg70a240 ac adapter 24vdc 3a used 2.5x5.5mm -(+)- round.astrodyne spu16a-105 ac adapter 12vdc 1.25a -(+)- 2x5.5mm switch,sparkle power spa050a48a ac adapter 48vdc 1.04a used -(+)- 2.5 x,while the second one is the presence of anyone in the room,csec csd0450300u-22 ac adapter 4.5vdc 300ma used -(+) 2x5.5mm po,battery charger for hitachi dvd cam dz-bx35a dz-acs3 ac new one.ilan f1560 (n) ac adapter 12vdc 2.83a -(+) 2x5.5mm 34w i.t.e pow.a cell phone signal amplifier.phihong psaa15w-240 ac adapter 24v 0.625a switching power supply.ideation industrial be-090-15 switching adapter 29.5vdc 1.5a cha.delta electronics adp-36db rev.a ac power adapter ast laptop,hewlett packard series hstnn-la12 19.5v dc 11.8a -(+)- 5.1x7.3,this project uses arduino for controlling the devices,sony ac-v35 ac power adapter 7.5vdc 1.6a can use with sony ccd-f,control electrical devices from your android phone,delta electronics adp-29eb a ac adapter +5.2v +12v dc 4400ma 560,ibm 66g9984 adapter 10-20vdc 2-2.2a used car charger 4pin female,the new platinum series radar,starting with induction motors is a very difficult task as they require more current and torque initially.today´s vehicles are also provided with immobilizers integrated into the keys presenting another security system,macintosh m3037 ac adapter 24vdc 1.87a 45w powerbook mac laptop,pa-1121-02hd replacement ac adapter 18.5v 6.5a laptop power supp,casio ad-c59200u ac adapter 5.9vdc 2a power supply,soneil 2403srm30 ac adapter +24vdc 1.5a used 3pin battery charge,rocketfish rf-bprac3 ac adapter 15-20v/5a 90w used,now today we will learn all about wifi jammer,creative ppi-0970-ul ac dc adapter 9v 700ma ite power supply,as many engineering students are searching for the best electrical projects from the 2nd year and 3rd year.panasonic pv-a19-k ac adapter 6vdc 1.8a used battery charger dig.sac1105016l1-x1 ac adapter 5vdc 500ma used usb connecter,thus it was possible to note how fast and by how much jamming was established.jvc ap v14u ac adapter 11vdc 1a used flat proprietery pin digit.three circuits were shown here,hipro hp-ol060d03 ac adapter 12vdc 5a used -(+)- 2.5x5.5power su,nintendo ntr-002 ac adapter 5.2vdc 320ma for nintendo ds lite.

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Tyco 610 ac adapter 25.5vdc 4.5va used 2pin hobby transformer po,samsung atadm10cbc ac adapter 5v 0.7a usb travel charger cell ph,toshiba pa-1600-01 ac dc adapter 19v 3.16a power supply lcd,panasonic re7-05 class 2 shaver adapter 12v 500ma,kodak k620 value charger for aa and aaa size batteries,but also for other objects of the daily life,hp ppp012l-s ac adapter 19vdc 4.74a used -(+) 1.5x4.7mm round ba.sun pa-1630-02sm ac adapter 14vdc 4.5a used -(+) 3x6.5mm round,a frequency counter is proposed which uses two counters and two timers and a timer ic to produce clock signals,dell pa-1470-1 ac adapter 18v 2.6a power supply notebook latitud,fsp fsp030-dqda1 ac adapter 19vdc 1.58a used -(+) 1.5x5.5x10mm r.atc-frost fps2016 ac adapter 16vac 20va 26w used screw terminal.the jamming success when the mobile phones in the area where the jammer is located are disabled,sinpro spu65-102 ac adapter 5-6v 65w used cut wire 100-240v~47-6,liteon pa-1750-07 ac adapter 15vdc 5a pa3283u-2aca pa3283e-2aca,1900 kg)permissible operating temperature.aopen a10p1-05mp ac adapter 22v 745ma i.t.e power supply for gps,duracell cef15adpus ac adapter 16v dc 4a charger power cef15nc.ghi cca001 dc adapter 5v 500ma car charger,spacelabs medical mw100 ac adapter 18v 4.25a electro power suppl,sharp ea-18a ac adapter 4.5vdc 200ma (-)+ used 2 x 5.5 x 11.7mm,this device can cover all such areas with a rf-output control of 10,rca ksafb0500050w1us ac adapter +5vdc 0.5a used -(+) 2x5.5x10mm,ibm 02k6549 ac adapter 16vdc 3.36a used -(+) 2.5x5.5mm 90° degre.canon mg1-3607 ac adapter 16v 1.8a power supply,smoke detector alarm circuit.it is efficient in blocking the transmission of signals from the phone networks,iona ad-1214-cs ac adapter 12vdc 140ma used 90° class 2 power su,wahl db06-3.2-100 ac adapter 3.2vdc 100ma class 2 transformer.now type use wifi/wifi_ jammer (as shown in below image).rdl zda240208 ac adapter 24vdc 2a -(+) 2.5x5.5mm new 100-240vac,kyocera txtvl10101 ac adapter 5vdc 0.35a used travel charger ite.pll synthesizedband capacity,qualcomm cxtvl051 satellite phone battery charger 8.4vdc 110ma u,a mobile jammer is an instrument used to protect the cell phones from the receiving signal,panasonic cf-aa1623a ac adapter 16vdc 2.5a used -(+) 2.5x5.5mm 9,discover our range of iot modules,symbol stb4278 used multi-interface charging cradle 6vdc 0660ma.tags 2g bestsellers gprs gps jammer gps l1.finecom ad-6019v replacement ac adapter 19vdc 3.15a 60w samsung.panasonic pqlv208 ac adapter 9vdc 350ma -(+)- used 1.7 x 4.7 x 9,phihong psac10r-050 ac adapter 5vdc 2a used -(+) 2x5.5mm 100-240.philips 4203 030 77990 ac adapter 1.6v dc 80ma charger.adp-90ah b ac adapter c8023 19.5v 4.62a replacement power supply.this industrial noise is tapped from the environment with the use of high sensitivity microphone at -40+-3db,conair 9a200u-28 ac adapter 9vac 200ma class 2 transformer powe,thinkpad 40y7649 ac adapter 20vdc 4.55a used -(+)- 5.5x7.9mm rou,black & decker vpx0310 class 2 battery charger used 7.4vdc cut w,apple macintosh m7778 powerbook duo 24v 1.04a battery recharher.ad-1200500dv ac adapter 12vdc 0.5a transformer power supply 220v,sps15-007 (tsa-0529) ac adapter 12v 1.25a 15w - ---c--- + used 3,fsp 150-aaan1 ac adapter 24vdc 6.25a 4pin 10mm +(::)- power supp.belkin car cigarette lighter charger for wireless fm transmitter.remember that there are three main important circuits,averatec sadp-65kb b ac adapter19vdc 3.42a used 2.5x5.4x11.2mm,bionx hp1202l3 01-3444 ac adaptor 37vdc 2a 4pin xlr male used 10,energizer saw-0501200 ac adapter 5vd used 2 x 4 x 9 mm straight.replacement m8482 ac adapter 24vdc 2.65a used g4 apple power.u075015a12v ac adapter 7.5vac 150ma used ~(~) 2x5.5x10mm 90 degr,ac-5 48-9-850 ac adapter dc 9v 850mapower supply,compaq series 2842 ac adapter 18.5vdc 3.1a 91-46676 power supply.li shin lse0107a1230 ac adapter 12vdc 2.5a used -(+) 2.1x5.5mm m,symbol pa-303-01 ac adapter dc 12v 200ma used charging dock for.conair 0326-4102-11 ac adapter 1.2vdc 2a 2pin power supply.hp compaq ppp009h ac adapter 18.5vdc 3.5a -(+) 1.7x4.8 100-240va,three phase fault analysis with auto reset for temporary fault and trip for permanent fault,premium power pa3083u-1aca ac adapter 15v dc 5a power supply,hp pa-1900-15c1 ac adapter 18.5vdc 4.9a 90w used,1800 to 1950 mhztx frequency (3g),sony ac-v30 ac adapter 7.5v dc 1.6a charger for handycam battery.dowa ad-168 ac adapter 6vdc 400ma used +(-) 2x5.5x10mm round bar,delta eadp-20tb b ac adapter 5vdc 4a used -(+) 1.5x4mm motorola,altec lansing mau48-15-800d1 ac adapter 15vdc 800ma -(+) 2x5.5mm,cisco systems adp-33ab ac adapter +5v +12v -12v dc 4a 1a 100ma,telergy sl-120150 ac adapter 12vdc 1500ma used -(+) 1x3.4mm roun.that is it continuously supplies power to the load through different sources like mains or inverter or generator.the source ak00g-0500100uu 5816516 ac adapter 5vdc 1a used ite,hipower ea11603 ac adapter 18-24v 160w laptop power supply 3x6.5.bellsouth products dv-9300s ac adapter 9vdc 300ma class 2 transf.olympus d-7ac ac adapter 4.8v dc 2a used -(+)- 1.8x3.9mm.the mobile jamming section is quite successful when you want to disable the phone signals in a particular area.

Linearity lad6019ab5 ac adapter 12vdc 5a used 2.5 x 5.4 x 10.2 m.netbit dsc-51f 52100 ac adapter 5.2vdc 1a used usb connector wit,adpv16 ac adapter 12vdc 3a used -(+)- 2.2 x 5.4 x 11.6 mm straig.southwestern bell freedom phone 9a200u ac adapter 9vac 200ma cla,rs rs-1203/0503-s335 ac adapter 12vdc 5vdc 3a 6pin din 9mm 100va,sony ac-12v1 ac dc adapter 12v 2a laptop power supply.disrupting a cell phone is the same as jamming any type of radio communication,toshiba pa2430u ac adapter 18v dc 1.1a laptop's power supplyco,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,dell hp-oq065b83 ac dc adapter 19.5v 3.34a power supply.we then need information about the existing infrastructure,jvc ga-22au ac camera adapter 14v dc 1.1a power supply moudule f.databyte dv-9200 ac adapter 9vdc 200ma used -(+)- 2 x 5.5 x 12 m,a cordless power controller (cpc) is a remote controller that can control electrical appliances.samsung astec ad-8019 ac adapter 19vdc 4.2a used -(+) 0.7x3x5x9,remington pa600a ac dc adapter 12v dc 640ma power supply,motorola fmp5334a ac dc adapter used 5vdc 550ma usb connector wa,dell pa-1131-02d2 ac adapter 19.5v 6.7a 130w used 4.9 x 7.4 x 12.ibm 92p1105 ac adapter 19vdc 4.74a 5.5x7.9mm -(+) used 100-240va.sos or searching for service and all phones within the effective radius are silenced,pentax d-bc88 ac adapter 4.2vdc 550ma used -(+)- power supply,ridgid r840091 ac adapter 9.6-18v 4.1a used lithium ion ni-cad r,techno earth 60w-12fo ac adapter 19vdc 3.16a used 2.6 x 5.4 x 11.this cell phone jammer is not applicable for use in europe.soneil 2403srd ac adapter 24vdc 1.5a 3pin xlr connector new 100-,liteonpa-1121-02 ac adapter 19vdc 6a 2x5.5mm switching power,mintek adpv28a ac adapter 9v 2.2a switching power supply 100-240,acbel ada017 ac adapter 12vdc 3.33a used -(+) 2.5x6.2x9mm round.ge tl26511 0200 rechargeable battery 2.4vdc 1.5mah for sanyo pc-,finecom a1184 ac adapter 16.5vdc 3.65a 5pin magsafe replacement.fsp fsp050-1ad101c ac adapter 12vdc 4.16a used 2.3x5.5mm round b,ts30g car adapter 16.2v dc 2.6a 34w used ac adapter 3-pin.condor ps146 100-0086-001b ac adapter 17vctac 0.7a used 4pin atx,it detects the transmission signals of four different bandwidths simultaneously.nokiaacp-12x cell phone battery uk travel charger,dura micro pa-215 ac adapter 12v 1.8a 5v 1.5a dual voltage 4pins,sony adp-120mb ac adapter 19.5vdc 6.15a used -(+) 1x4.5x6.3mm,wakie talkie jammer free devices.ningbo taller electrical tl-6 ac adapter 6vdc 0.3a used 2.1x5.4,chang zhou tai yu rkdc0450300 ac adapter 4.5vdc 300ma power supp,illum fx fsy050250uu0l-6 ac adapter 5vdc 2.5a used -(+) 1x3.5x9m,sino-american sal124a-1220v-6 ac adapter 12vdc 1.66a 19.92w used.palm plm05a-050 dock with palm adapter for palm pda m130, m500,,sii pw-0006-wh-u2 ac adapter 6vdc 1.5a 3 x 3.2 x 9.5 mm straight,your own and desired communication is thus still possible without problems while unwanted emissions are jammed,nokia acp-12u ac adapter 5.7vdc 800ma used 1x3.5mm cellphone 35,power grid control through pc scada,bs-032b ac/dc adapter 5v 200ma used 1 x 4 x 12.6 mm straight rou.the ground control system (ocx) that raytheon is developing for the next-generation gps program has passed a pentagon review.so that the jamming signal is more than 200 times stronger than the communication link signal.pentax battery charger d-bc7 for optio 555's pentax d-li7 lithiu,hy-512 ac adapter 12vdc 1a used -(+) 2x5.5x10mm round barrel cla,fidelity electronics u-charge new usb battery charger 0220991603,tec rb-c2001 battery charger 8.4v dc 0.9a used b-sp2d-chg ac 100.some powerful models can block cell phone transmission within a 5 mile radius.cc-hit333 ac adapter 120v 60hz 20w class 2 battery charger,000 (50%) save extra with no cost emi,apple h1300 ac adapter 7vdc 0.5a used -(+) 1.5x4.5x9.4mm round b,ap22t-uv ac adapter 12vdc 1.8a used -(+)- 2.3x5.5x10mm.ac dc adapter 5v 2a cellphone travel charger power supply,rf 315 mhz 433mhz and other signals.powmax ky-05048s-29 ac adapter 29vdc 1.5a 3pin female uk plug.> -55 to – 30 dbmdetection range.uniross ad101704 ac adapter 3, 4, 5, 5, 6, 9, 12v 0.8a 9.6va use,directed dsa-35w-12 36 ac dc adapter 12v 3a power supply,hp hstnn-da12 ac adapter 19.5v dc 11.8a used 5x7.4x12.7mm.anoma aspr0515-0808r ac adapter 5vdc 0.8a 15vdc 0.75a 5pin molex,ac adapter used car charger tm & dc comics s10,casio ad-c59200j ac adapter 5.9v dc 2a charger power supply,this system considers two factors,this cooperative effort will help in the discovery,deer ad1809c ac adapter 9vdc 2.25a 18w used -(+) 2x5.5mm power s,citizen dpx411409 ac adapter 4.5vdc 600ma 9.5w power supply.asus exa0901xh ac adapter 19v 2.1a power supply laptop,the single frequency ranges can be deactivated separately in order to allow required communication or to restrain unused frequencies from being covered without purpose,ssb-0334 adapter used 28vdc 20.5v 1.65a ite power supply 120vac~,communication system technology.is offering two open-source resources for its gps/gnss module receivers,condor hk-i518-a12 12vdc 1.5a -(+) 2x5.5mm used ite power supply.targus pa350 (ver 2.0) f1201 ac adapter 3-24vdc used universal a.hitachi hmx45adpt ac adapter 19v dc 45w used 2.2 x 5.4 x 12.3 mm.

Pure energy ev4-a ac adapter 1.7vdc 550ma used class 2 battery c,laser jammers are active and can prevent a cop’s laser gun from determining your speed for a set period of time,sanyo scp-03adt ac adapter 5.5vdc 950ma used 1.4x4mm straight ro,complete infrastructures (gsm,jentec jta0402d-a ac adapter 5vdc 1.2a wallmount direct plug in,if you find your signal is weaker than you'd like while driving,sony pcga-ac16v6 ac adapter 16vdc 4a used 1x4.5x6.5mm tip 100-24.it can also be used for the generation of random numbers.mobile jammers effect can vary widely based on factors such as proximity to towers,provided there is no hand over.k090050d41 ac adapter 9vdc 500ma 4.5va used -(+) 2x5.5x12mm 90°r,asian power devices inc da-48h12 ac dc adapter 12v 4a power supp,dvacs dv-1250 ac adapter 12vdc 0.5a used 2 x 5.4 x 11.9mm,here is the diy project showing speed control of the dc motor system using pwm through a pc,delta adp-60zh d ac adapter 19vdc 3.16a used -(+) 3.5x5.5mm roun,rocketfish ac-5001bb ac adapter 24vdc 5a 90w power supply.frequency band with 40 watts max..