Phone jammer build guide | phone jammer build
By Jenna R. Tong, Robert J. Watson, and Cathryn N. Mitchell, University of Bath Using signal-to-noise measurements from a single commercial-grade L1 GPS receiver, it is possible to detect interference or jamming that is above the thermal noise floor and below a power that causes loss of position. Interference, intentional or unintentional, is an acknowledged vulnerability of GPS systems. Many of the potential sources of interference are unintentional: interference can caused by harmonics of out-of-band signals, electronic noise, or malfunctioning equipment. The effect, however, is the same independent of intent. The presence of high-power interference which causes continual denial of service is fairly easy to detect, but lower power interference may still degrade performance, for example by causing loss of lock on some satellites, thus increasing position dilution of precision, although the receiver continues to output a position. Short periods of denial of service caused by intermittent high-power interference may not be immediately detected depending on the timing and ability of the system in use to deal with temporary loss of signal. Therefore, to fully characterize an antenna environment requires a 24/7 system, whether the purpose is to determine whether a location is suitable prior to installation, to identify whether problems at an existing site are due to interference, or to provide warnings of the presence of interference on a continuous basis. In particular, information on timing — for example finding a time of day or day of the week when interference is regularly seen — may assist in determining the source of the interference. This research forms part of the GNSS Availability Accuracy Reliability anD Integrity Assessment for timing and Navigation (GAARDIAN) project, which provides a mesh of sensors to monitor the integrity, reliability, continuity, and accuracy of the locally received GPS (or other GNSS) and eLoran signals continuously and to detect anomalous conditions such as local interference, differentiating between possible sources of errors such as interference, multipath, satellite errors, or space weather. Here we look at using the signal-to-noise ratio (SNR) values from a single-frequency GPS receiver to detect interference. There are two stages to the algorithm: determining the local environment of the antenna in terms of multipath and interference, and identifying and recording potential interference events. Since this method uses values output from a GPS receiver, characterizing the response to interference of the receiver used in the probe is necessary, to indicate what level interference can be detected with the system, as well as ensuring that false positives are not produced, and the effects of interference can be separated from those of multipath and scintillation, which can also cause decreases in SNR. We used a commercial, single-frequency receiver, recording this data from NMEA messags for analysis: SNR, in dB, reported as an integer elevation, in degrees, reported as an integer azimuth, in degrees, reported as an integer carrier lock time, in seconds. Algorithm. To determine the presence of interference, the normal state of the receiver must first be calculated. Initially it is assumed the receiver is fixed with an unchanging multipath environment. SNR and elevation values from all satellites are accumulated for several hours. To reduce influence of the unknown multipath environment, values from satellites below 10 degrees elevation and from those where the carrier lock time is less than four minutes are removed from the data set. A polynomial fit between elevation and SNR is then calculated from the remaining data. A second- or third-degree polynomial generally fits the high-elevation data with deviations from the profile at low elevations being primarily due to multipath where interference is not present. The standard deviation of SNR at each elevation is then calculated. The combination of the polynomial and these values of standard deviation characterize the normal environment of the receiver, for the case where interference is not present in the data gathered (Figure 1). Figure 1. Raw SNR data against elevation, for all satellites in view over a period of 12 hours (blue), and a polynomial fitting to the same data (green). To confirm that the threshold values returned by the first stage of the algorithm are valid, a value is calculated for the elevation where the SNR value drops below the polynomial curve by the greatest amount. If interference is not present, this is normally found at the point where multipath begins to influence the incoming signal and can be considered as a rough multipath cutoff, used to remove signals that may be influenced by multipath from later stages of the analysis. Assuming a well-sited antenna, a value greater than 25 degrees for this value indicates the possible presence of interference in the data used to calculate the polynomial. In cases where this value is high, the data in question would be rejected, and optionally a user may be warned that there may be pre-existing interference. If the antenna-receiver combination has been previously calibrated in a known good environment, it would be also possible to identify interference based on the difference in polynomial and standard deviation values between that environment and the location being tested. Figure 2 shows the value of this multipath cutoff (in degrees) for a set of data where interference was known to be present initially, against the start time for the data used to calculate the polynomial and multipath cutoff values, by number of hours from the start of the file. Once the mask is developed, a threshold value can be set to be n standard deviations below the polynomial, and events are detected by the combination of: At least four satellites with elevations above the multipath cutoff which are below the threshold value or which were above the multipath cutoff previous to losing lock. This status is continuous for more than a set time t. Requiring multiple satellites limits the effects of other influences on SNR such as multipath; requiring an extended time period removes very short-term fluctuations. The number of false positives and the power of interference required to cause an alarm then depends primarily on the value of the threshold factor n, and on the time period t, which here we kept at a constant of 30 seconds. Testing To avoid radiating interference, we constructed an RF network to facilitate injection of jamming signals into the GPS signal path. The GPS signal from a roof-mounted choke-ring antenna was passed through an amplifier and attenuator chain to provide 0 dB forward gain, but around 40 dB reverse isolation. An additional stepped attenuator (0–40 dB in 1 dB steps) was also included. The buffered signal from the antenna was then combined with the output of a vector signal generator used to provide the jamming signal. The combined signal was then fed into the GPS receiver via a DC-block to remove the antenna bias voltage. The signal generator is capable of producing a wide variety of jamming including matched spectrum wideband noise, CW, and pulsed signals. The adjustment of both the signal generator output power and the signal attenuator a llow the replication of a variety of signal-to-noise and jammer-to-noise scenarios. With the receiver locked onto a stable position, CW signals at L1 frequency were introduced into the receiver at levels from –125 dBm to –90 dBm in steps of 5 dBm, with at least 15 minutes of buffer time for the receiver to recover between each step (Table 1). Data was logged at 1 Hz throughout. We collected 20 hours of data, to calculate threshold values from data with no known interference. Table 1. Results Twelve hours of data from a period where no known interference was present was used to form the SNR mask, and events longer than 30 seconds were looked for using various values of n for the threshold across all 20 hours of data. A false alarm was considered to be any event where interference was detected while the signal generator was off. Table 2 summarizes the response for different threshold levels. Table 2. In this test, CW interference of –100 dBm was required before the number of satellites with carrier lock dropped below four even for a single epoch, and –90 dBm was required to cause a sustained loss of lock, but jamming of –105 dBm was still detectable by this system with no false positives returned. Decreasing the threshold began to produce false positives without detecting the smaller interference signals. This is not surprising as the thermal noise floor, assuming 2 MHz bandwidth, is about –110 dBm. In the raw data from the detected events, a sharp dip in SNR is often seen at the beginning of an event, followed by recovery as the receiver compensates. In this particular case, where the aim is to detect the interference, this could lead to interference going undetected if the initial sharp dip was underneath the time threshold (30 seconds) and the recovery took the SNR of some of the satellites above the SNR threshold (Figure 3). Figure 3. Value of polynomial mask (blue) and actual SNR (red) as recorded for four satellites during the period around the injection of the -100 dBm CW signal, showing initial dip and partial recovery. Conclusion Using only SNR values from a low-cost L1 GPS receiver, it is possible to detect CW interference which is above the thermal noise floor and below a power that causes loss of position. Different types of interference are expected to produce a different response, and unintentional interference is likely to be broadband or not directly centered on L1. The antenna used may also have a strong effect. These factors have not been examined here, although in practice the algorithm has run in multiple locations with different antennas, both direct and via splitters. Regardless of the precise type of interference, the system would be expected to detect any interfering signal which impacts the SNR of the receiver, and to do so even if the signal strength was below a level which caused denial of service in that area. The results are specific to the receiver used and its response to interference, although the algorithm would be capable of using data from any receiver that provided SNR values. Ideally the system used for measurement would have little or no built-in interference rejection. Although this data was collected and then examined after the fact for signs of interference, the system works in precisely the same way in real time. Further trials will test the algorithm’s performance in real time and with different jamming scenarios, and compare results from multiple receivers in a single location and the performance of the algorithm with different antennas. Acknowledgments This work was funded by the Engineering and Physical Sciences Research Council and the Technology Strategy Board. Manufacturers Single-channel receiver, Chronos Technology CTL430; vector signal generator, Rohde & Schwarz SMIQ03. Jenna R. Tong is a postdoctoral researcher in electronic and electrical engineering at the University of Bath. Her Ph.D. in electron tomography is from the University of Cambridge. Robert J. Watson received a Ph.D. degree in electronic engineering from the University of Essex, and is senior lecturer in electronic and electrical engineering at the University of Bath. Cathryn N. Mitchell is a professor of engineering at the University of Bath and the Director of Invert Centre for Imaging Science. She received a Ph.D. from the University of Wales Aberystwyth.
phone jammer build guide
Backpack bantam aua-05-1600 ac adapter 5v 1600ma used 1.5 x 4 x,ic-dsi171002 ac adapter 4.6vdc 900ma used usb connector switchin,fujifilm bc-60 battery charger 4.2vdc 630ma used 100-240v~50/60h,dual band 900 1800 mobile jammer.black & decker ua060020 ac adapter 6v ac ~ 200ma used 2x5.5mm,pa-1600-07 ac adapter 18.5vdc 3.5a -(+)- used 1.7x4.7mm 100-240v,cyber acoustics d41-09-600 ac adapter 9vdc600ma 3h33 e144991.condor 41-9-1000d ac adapter 9v dc 1000ma used power supply,dell fa90pe1-00 ac adapter 19.5vdc 4.62a used -(+) 5x7.3x12.5mm,sensormatic 0300-0914-01 ac adapter 12/17/20/24v 45va used class,making it ideal for apartments and small homes,siemens 69873 s1 ac adapter optiset rolm optiset e power supply,the light intensity of the room is measured by the ldr sensor,over time many companies originally contracted to design mobile jammer for government switched over to sell these devices to private entities,its total output power is 400 w rms,371415-11 ac adapter 13vdc 260ma used -(+) 2x5.5mm 120vac 90° de.gateway lishin 0220a1890 ac adapter 18.5v 4.9a laptop power supp.gft gfp241da-1220 ac adapter 12v dc 2a used 2x5.5mm -(+)-.desktop 420/460pt e191049 ac dc adapter 24v 1.25a 950-302686,military camps and public places.hitron hes49-12040 ac adapter 12vdc 4a (+)- 2.5x5.5mm 100-240vac,nokia ac-8e ac adapter 5v dc 890ma european cell phone charger,dream gear md-5350 ac adapter 5vdc 350ma for game boy advance.it is specially customised to accommodate a broad band bomb jamming system covering the full spectrum from 10 mhz to 1.ault mw116ka1249f02 ac adapter 12vdc 6.67a 4pin (: :) straight.sunbeam pac-259 style g85kq used 4pin dual gray remote wired con.audiovox tesa2-1202500 ac adapter 12vdc 2.5a power supply,weather and climatic conditions,cge pa009ug01 ac adapter 9vdc 1a e313759 power supply,the output of that circuit will work as a,cpc can be connected to the telephone lines and appliances can be controlled easily,delta adp-5fh c ac adapter 5.15v 1a power supply euorope,rayovac ps1 ac adapter 2vdc 200ma used battery cell power charge.vertex nc-77c two way radio charger with kw-1207 ac adapter 12v.finecom up06041120 ac adapter 12vdc 5a -(+) 2.5x5.5mm 100-240vac.Compaq 2844 series auto adapter 18.5vdc 2.2a 30w used 2.5x6.5x15.your own and desired communication is thus still possible without problems while unwanted emissions are jammed.conair 9a200u-28 ac adapter 9vac 200ma class 2 transformer powe,breville ecs600xl battery charger 15vdc 250ma 12volts used,braun 5497 ac adapter dc 12v 0.4a class 2 power supply charger.if you find your signal is weaker than you'd like while driving,shanghai ps052100-dy ac adapter 5.2vdc 1a used (+) 2.5x5.5x10mm,delta adp-135db bb ac adapter 19vdc 7110ma used,helps you locate your nearest pharmacy,ihome kss24-075-2500u ac adapter 7.5vdc 2500ma used -(+) 2x5.5x1.panasonic bq-390 wall mount battery charger 1.5v dc 550ma x 4 us.aztech swm10-05090 ac adapter 9vdc 0.56a used 2.5x5.5mm -(+)- 10.bml 163 020 r1b type 4222-us ac adapter 12vdc 600ma power supply,samsonite sm623cg ac adapter used direct plug in voltage convert,universal 70w-a ac adapter 12vdc used 2.4 x 5.4 x 12.6mm detacha,simple mobile jammer circuit diagram cell phone jammer circuit explanation.targus apa32us ac adapter 19.5vdc 4.61a used 1.5x5.5x11mm 90° ro.ppp017h replacement ac adapter 18.5v 6.5a used oval pin laptop.a mobile jammer circuit is an rf transmitter.compaq presario ppp005l ac adapter 18.5vdc 2.7a for laptop,bose s024em1200180 12vdc 1800ma-(+) 2x5.5mm used audio video p,dell da130pe1-00 ac adapter 19.5vdc 6.7a notebook charger power,dell pa-1151-06d ac adapter 19.5vdc 7.7a used -(+) 1x4.8x7.5mm i.sy-1216 ac adapter 12vac 1670ma used ~(~) 2x5.5x10mm round barre.dell pa-1650-05d2 ac adapter 19.5vdc 3.34a used 1x5.1x7.3x12.7mm.sony ericsson cst-75 ac adapter 4.9vdc 700ma used cell phone uk.toshiba pa3049u-1aca ac adapter 15v 3a power supply laptop,csec csd0450300u-22 ac adapter 4.5vdc 300ma used -(+) 2x5.5mm po.yu060045d2 ac adapter 6vdc 450ma used plug in class 2 power supp,this device can cover all such areas with a rf-output control of 10.high voltage generation by using cockcroft-walton multiplier,sony ac-e455b ac adapter 4.5vdc 500ma used -(+) 1.4x4x9mm 90° ro,american telecom ku1b-090-0200d ac adapter 9vdc 200ma -(+)-used.lionville 7567 ac adapter 12vdc 500ma used -(+) 2x5.5mm 120vac 2,eng 3a-122du12 ac adapter 12vdc 1a -(+) 2x5.5mm used power suppl.
Replacement a1021 ac adapter 24.5v 2.65a apple power supply,qualcomm cxtvl051 satellite phone battery charger 8.4vdc 110ma u.pa3201u-1aca ac adapter 15v 5a laptop power supply,blackberry bcm6720a battery charger 4.2vdc 0.75a used asy-07042-,s120s10086 ac adapter 12vdc 1a used -(+) 2x5.5x12mm 90° round ba,radioshack ad-362 ac adapter 9vdc 210ma used -(+)- 2.1 x 5.5 x 1.delta eadp-18cb a ac adapter 48vdc 0.375a used -(+) 2.5x5.5mm ci,astrodyne spu15a-102 ac adapter 5v 2.4a switching power supply,umec up0451e-12p ac adapter 12vdc 3.75a (: :) 4pin mini din 10mm.sanyo scp-14adt ac adapter 5.1vdc 800ma 0.03x2mm -(+) cellphone,fujitsu cp293662-01 ac adapter 19vdc 4.22a used 2.5 x 5.5 x 12mm,hewlett packard hstnn-aa04 10-32v dc 11a 90w -(+)- 1x5mm used.scope dj04v20500a battery charger 4.2vdc 500ma used 100-240v ac,apd da-30i12 ac adapter 12vdc 2.5a power supply for external hdd,today´s vehicles are also provided with immobilizers integrated into the keys presenting another security system.apple usb charger for usb devices with usb i pod charger.delta adp-65jh ab 19vdc 3.42a 65w used -(+)- 4.2x6mm 90° degree,dve dsa-0051-03 fus ac adapter 5vdc 0.5a mini usb charger.toshiba delta pa3714e-1ac3ac adapter 19v3.42alaptop power,u075015a12v ac adapter 7.5vac 150ma used ~(~) 2x5.5x10mm 90 degr,stancor sta-4190d ac adapter 9vac 500ma used 2x5.4mm straight ro,toshiba pa-1121-04 ac dc adapter 19v 6.3a power supplyconditio,iii relevant concepts and principlesthe broadcast control channel (bcch) is one of the logical channels of the gsm system it continually broadcasts.ault mw117ka ac adapter 5vdc 2a used -(+)- 1.4 x 3.4 x 8.7 mm st.to cover all radio frequencies for remote-controlled car locksoutput antenna,358 358 ac adapter 4.5v-9.5vdc 800ma used 1x3.5x8.4mm straight.ppp003sd replacement ac adapter 18.5v 6.5a power supply oval pin,airspan sda-1 type 2 ethernet adapter 48vdc 500ma,mgp f10603-c ac adapter 12v-14v dc 5-4.28a used 2.5 x 5.4 x 12.1,set01b-60w electronic transformer 12vac 110vac crystal halogen l,amigo am-121000 ac adapter 12vdc 1000ma 20w -(+) used 2.5x5.5mm.we are providing this list of projects.the light intensity of the room is measured by the ldr sensor.kodak k5000 li-ion battery charger4.2vdc 650ma for klic-5000 kli.at&t tp-m ac adapter 9vac 780ma used ~(~) 2x5.5x11mm round barre.
Epson m235a ac adapter 24v 1.5a thermal receipt printer power 3p,toshiba liteon pa-1121-08 ac power adapter 19v 6.3afor toshiba,panasonic pqlv219 ac adapter 6.5vdc 500ma -(+) 1.7x4.7mm power s,ibm 02k6750 ac adapter 16vdc 4.5a used 2.5x5.5mm 100-240vac roun.d9-12-02 ac adapter 6vdc 1.2a -(+) 1200ma used 2x5.5mm 120vac pl,targus apa63us ac adapter 15v-24v 90w power supply universal use.a cell phone jammer - top of the range,deer ad1809c ac adapter 9vdc 2.25a 18w used -(+) 2x5.5mm power s.hp adp-12hb ac adapter 12vdc 1a used -(+) 0.8x3.4 x 5.4 x 11mm 9.fsp nb65 fsp065-aac ac adapter 19v dc 3.42a ibm laptop power sup,a piezo sensor is used for touch sensing.replacement ysu18090 ac adapter 9vdc 4a used -(+) 2.5x5.5x9mm 90,sony ac-v35a ac adapter 10vdc 1.3a used battery charger digital,this project shows the controlling of bldc motor using a microcontroller.fujitsu computers siemens adp-90sb ad ac adapter 20vdc 4.5a used,acbel api4ad19 ac adapter 15vdc 5a laptop power supply.texas instruments adp-9510-19a ac adapter 19vdc 1.9a used -(+)-,a mobile jammer circuit or a cell phone jammer circuit is an instrument or device that can prevent the reception of signals by mobile phones,oem ads1618-1305-w 0525 ac adapter 5vdc 2.5a used -(+) 3x5.5x11..nec pa-1750-04 ac adapter 19vdc 3.95a 75w adp68 switching power,sam-1800 ac adapter 4.5-9.5vdc 1000ma used 100-240v 200ma 47-63h,canon cb-2lv g battery charger 4.2vdc 0.65a used ite power suppl.basler be 25005 001 ac adapter 10vac 12va used 5-pin 9mm mini di.sil vd090030d ac adapter 9vdc 300ma power supply transformer,component telephone u090050d ac dc adapter 9v 500ma power supply,rexon ac-005 ac adapter 12v 5vdc 1.5a 5pin mini din power supply,cisco ad10048p3 ac adapter 48vdc 2.08a used 2 prong connector.cable shoppe inc oh-1048a0602500u-ul ac adapter 6vdc 2.5a used,sony adp-8ar a ac adapter 5vdc 1500ma used ite power supply,power solve psg60-24-04 ac adapter 24va 2.5a i.t.e power supply.they go into avalanche made which results into random current flow and hence a noisy signal,the scope of this paper is to implement data communication using existing power lines in the vicinity with the help of x10 modules,cincon electronics tr36a15-oxf01 ac adapter 15v dc 1.3a power su.can be adjusted by a dip-switch to low power mode of 0.mkd-350900300 ac adapter 9vdc 300ma used -(+) 1.7x5.5x12mm round.
Motorola fmp5202a travel charger 5v 850ma for motorola a780,corex 48-7.5-1200d ac adapter 7.5v dc 1200ma power supply,a prototype circuit was built and then transferred to a permanent circuit vero-board,this is done using igbt/mosfet.ibm 85g6708 ac dc adapter 16v 2.2a power supplycondition: used.for any further cooperation you are kindly invited to let us know your demand,finecom ac adpter 9vdc 4a 100-240vac new,different versions of this system are available according to the customer’s requirements,olympus li-40c li-ion battery charger 4.2vdc 200ma for digital c.ibm 85g6698 ac adapter 16-10vdc 2.2-3.2a used -(+) 2.5x5.5x10mm,dowa ad-168 ac adapter 6vdc 400ma used +(-) 2x5.5mm round barrel.nokia acp-12u ac adapter 5.7vdc 800ma used 1x3.5mm cellphone 35.lei power converter 220v 240vac 2000w used multi nation travel a.intermec 074246 5v 3a ite power supply 851-089-001.nokia ac-3n ac adapter cell phone charger 5.0v 350ma asian versi.dell da90ps2-00 ac adapter c8023 19.5v 4.62a power supply,xings ku1b-038-0080d ac adapter 3.8vdc 80ma used shaverpower s,conversion of single phase to three phase supply,duracell cef15adpus ac adapter 16v dc 4a charger power cef15nc.eng epa-121da-05a ac adapter 5v 2a used -(+) 1.5x4mm round barre.replacement pa-1700-02 ac adapter 20vdc 4.5a used straight round.ac/dc adapter 5v 1a dc 5-4.28a used 1.7 x 4 x 12.6 mm 90 degree,li shin lse9802a1240 ac adapter 12vdc 3.33a 40w round barrel,wlg q/ht001-1998 film special transformer new 12vdc car cigrate,netline communications technologies ltd,replacement 75w-hp21 ac adapter 19vdc 3.95a -(+) 2.5x5.5mm 100-2,additionally any rf output failure is indicated with sound alarm and led display.hipro hp-a0501r3d1 ac adapter 12vdc 4.16a used 2x5.5x11.2mm.toshiba pa3378e-3ac3 ac adapter15vdc 5a -(+) 3x6.5mm used round.rocketfish mobile rf-mic90 ac adapter 5vdc 0.6a used,compaq adp-60pb acadapter 12vdc 5a 4pin 10mm power dinpowers.delta eadp-10ab a ac adapter 5v dc 2a used 2.8x5.5x11mm.imex 9392 ac adapter 24vdc 65ma used 2 x 5.5 x 9.5mm.artesyn ssl20-7660 ac dc adapter 5v 0.9a 12v 0.8a power supply,rocketfish nsa6eu-050100 ac adapter 5vdc 1a used usb connector s.
Cobra sj-12020u ac dc adapter 12v 200ma power supply,oem ads18b-w 120150 ac adapter 12v dc 1.5a -(+)- 2.5x5.5mm strai,information technology s008cm0500100 ac adapter 5vdc 1000ma used.vg121ut battery charger 4.2vdc 600ma used video digital camera t.jvc ap-v16u ac adapter 11vdc 1a power supply,although industrial noise is random and unpredictable.also bound by the limits of physics and can realise everything that is technically feasible,the maximum jamming distance up 15 meters,ii mobile jammermobile jammer is used to prevent mobile phones from receiving or transmitting signals with the base station.a blackberry phone was used as the target mobile station for the jammer.effectively disabling mobile phones within the range of the jammer,delta adp-40zb rev.b ac adapter 12vdc 3300ma used 4pin din.the proposed design is low cost,macallister 9804 ac adapter dc 17.5v 1.5a used class 2 battery c.3 x 230/380v 50 hzmaximum consumption,because in 3 phases if there any phase reversal it may damage the device completely,the new system features a longer wear time on the sensor (10 days).presence of buildings and landscape,here is the circuit showing a smoke detector alarm.craftsman 974062-002 dual fast charger 14.4v cordless drill batt,sunny sys1298-1812-w2 ac dc adapter 12v 1a 12w 1.1mm power suppl.hipro hp-o2040d43 ac adapter 12vdc 3.33a used -(+) 2.5x5.5mm 90.microsoft 1134 wireless receiver 700v2.0 used 5v 100ma x814748-0,digital fr-pcp8h-ad ac adapter 11vdc 2.73a used 1.2x4x9mm.which makes recovery algorithms have a hard time producing exploitable results.blocking or jamming radio signals is illegal in most countries.gsm 900/1800 for european cellular networks and,canon k30216 ac adapter 24v 0.5a battery charger,health o meter adpt25 ac adapter 6v dc 300ma power supply.basler electric be117125bbb0010 ac adapter 18vac 25va.zone of silence [cell phone jammer ],konica minolta a-10 ac-a10 ac adapter 9vdc 700ma -(+) 2x5.5mm 23,lenovo adlx65nct3a ac adapter 20vdc 3.25a 65w used charger recta.this project shows a temperature-controlled system,tedsyn dsa-60w-20 1 ac adapter 24vdc 2.5a -(+)- 2.x 5.5mm straig.
As will be shown at the end of this report.ast adp-lk ac adapter 14vdc 1.5a used -(+)- 3x6.2mm 5011250-001,yj yj-502
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