Great Scott Sir, there is a another channel name ET DISCOVER has made a signal jammer and signal booster, so sir i kindly request🙏🏻🙏🏻 you to investigate on his video also sir.
If there is an electronic component that is common across the videos, then they might be scamming people to empty out excess of junk they have in their stores by making the videos.
Yes, that's great - expose them as much as you can. I acutally don't really care, if some people "steal money" from a greedy company like google (who has ruined RU-vid, compared to what it once was, anyway), by getting payed for views, that would otherwise not be there (because that's what all is about. There are probably very few people who put up fake content, just for fun. At least not electronics - political content could be a different story though. It's pretty much all about geting an easy way to make money). But, it has gotten to a level where it indirectly becomes a problem foreveryone - especially beginers (who try to build shit that doesn't work and often think they do something wrong them self and because of that wastes a lot of time). Like 50% of RU-vid content is fake nowadays.
@@greatscottlab Please do it, guys like you and me, see whats wrong, but someone who is somewhat new to elektronics, may go to the trouble sourcing maybe obsolete parts to find out that this circuit is a ton of wasted time, material and money! Scott, keep that educational Videos cumming!
@@ДимитърАндонов-ъ7еI mean to be fair at those frequencies a little bit of coiled wire (of the correct length of course) would generally suffice. Receiving 1090mhz ADS-B from aeroplanes only needs about a 6.5cm dipole antenna (so about 13cm total). EDIT Which is exactly what I have attached to my window, furthest plane I've picked up so far with full location data being 381km away
@@irreverend_ That is a genuinely intriguing idea... I don't need another hobby. I don't need another hobby. I don't need another hobby... Oh, dear :(
@@ДимитърАндонов-ъ7е That "just coils wire" is called a helical antenna and perfectly legit for GSM applications. There are dual band and even quad band designs out there. People might write a thesis about novel antenna designs, but this isn't novel. People also cover pain management in their thesis, yet you're able to simply take an Ibruprofen against headache despite lacking a medical degree. It's really not that deep 🙂
You are doing a great service by debunking their disservice. I started with electronics when I was 14 (over 40 years ago) and though it is not my occupation I still play around with it as a hobby. What those channels are doing is beyond dishonest because they not only present BS as facts but also discourage people who want to learn. They will try and make one of those circuits work when it doesn't they won't be able to understand why which may frustrate them to the point of giving up. So, yes, keep fighting the good fight :)
If people who build jammers get frustrated and give up, good. But they're welcome to learn how to build non-interfering transmitters that should be well documented.
Definitely expose them! I hate these channels that use false information and even AI, combined with click baity titles to get views. This type of content just serves to clutter up the internet and discourage novices that might try to build the circuits and just blame themselves when it doesn't work.
While it's obvious that circuits like these can't work at radio frequencies, it should be noted that the capacitive load of a passive scope probe will affect the circuit and most common oscilloscopes can't measure such high frequencies anyway.
Seeing the real trasmitter device Scott showed here and said that this level is basically black mag now, people cannot make jammer devices at home, too many specific components are needed with high quality circuit assembeling.
Absolutely right!! We can’t block or boost mobile RF signal by simply these things. The mobile RF system use complex modulation technique such as OFDMA and transmission technique such as MIMO will make them more immune to external interferences. The frequency hopping spread spectrum technique will spread the signal over a wide frequency range, making it more resistant to interference and noise. Modern mobile communication systems employ sophisticated error detection and correction algorithms, such as Forward Error Correction (FEC) and Automatic Repeat request (ARQ). These techniques detect errors in the received data and correct them automatically. It also adapt to changing conditions by adjusting parameters like transmission power, modulation schemes, frequency band and data rates based on environmental conditions. From these observations it is very clear that mobile jamming / boosting is not a simple task. It requires more specialized RF IC and well-designed antenna systems along with complex signal processing algorithms.
3 месяца назад
FHSS isn't used on LTE/5G and if there only is 900 MHz GSM/LTE available, a simple single band jammer would technically be enough. However, often times you have all sorts of bands available.
RF jamming is EXTREMELY simple, so simple in fact it is possible to do it accidentally, all you have to do is (metaphorically) scream louder than the nearest tower on all the frequencies you want to block. What isn't simple is SELECTIVELY jamming ONLY mobile phone signals and doing it in a way that doesn't end up with you destroying your device while a representative of the FCC (or your local equivalent) observes you.
It's a good thing the power output is low. Interference around 125MHz is gonna piss off two regulatory authorities simultaneously. Aviation and communications!
I stopped believing that it could possibly work when I saw through hole components for GHz frequencies, but thanks for going all the way, very entertaining...
I'm down with debunking some more of these circuits, or even the opposite, proving some of them useful. A regular series of "Two of these designs are junk, but the third actually works. Can you guess which one" could actually be a good deal of fun.
plus 1 for more exposure of this fake electronics. These "creators" are giving electronics a bad reputation while at the same time making a living off the click-bait they are creating. There is too much like this on youtube...
Expose more of this crap. Some people think they can tell you anything, so it is good to expose them. And on the other side, its also educative... We all learn from those "mistakes". Thank you Scott!
You know what, it might actually be kinda based to advertise a "jammer" circuit that doesn't work, and make sure it stays at the top of search results so that it funnels in everyone too stupid to realize it can never actually work. Not this one though. One that's truly harmless.
I mean they are just everywhere, fake channels, it sucks seeing that majority of the content is this way We are lucky we have guys like you that give out real knowledge 🙌
@@unhandled12345 i would disagree. i guess many people out there are able to build up a circuit from a schematic perfectly , but do not understand what exactly they built there. Me as a kid would be a good example. With 13/14 years i was definetly able to build up a schematic, but do not understand it.
Totally agree with Name & Shame... 🤔 No matter what they R doing wrong in anything they do... 😏 I even report them;... which can B found when clicking the 3 (...) next 2 the Share button.
Tell you a truth your channel is really the best. I have never seen any informative channel like yours.❤ but it's under rated because some people think your videos are hard to understand😂. But i love your videos a lot.
YES PLEASE expose more channels the garbge is every where on youtube preventing quality informative content from getting the views and appreciation they deserve. Thank you for your Hard work and time you put into these quality+ Informative videos and Guides.
@greatscottlab , Sir, excuse me, I want to ask, can we make a Frequency Jammer at a Frequency of 40 KHz - 75 KHz and can work at a maximum distance of 50 meters or at least 15 meters. Lately my garden has often been dug up by gold hunters using metal detectors. Thank you in advance, sir. I am really waiting for your answer. If possible, I will plant the jammer in my garden because the position of the garden is far from people's houses.
I took engineering in the field of electrical and electronics because of Greatscott, electroboom, plasma channel , now i am graduated , time flies fast!!!
Wouldn't you want them to be fake, though? I mean, you wouldn't want everyone just knowing how to make a signal jammer. I think in this case you should just leave them as they are. Only expose projects, that you can show people to make for real. If you wouldn't teach people how to make a certain project, then people will be left going to other places, which might give them fake information. So unless you can give them the right information, you shouldn't bother.
Those circuits might work on the very long wavelength "shortwave" radio bands. Might. With some work. And the performance of jamming an AM radio station might leave a lot to be desired, if noticeable at all. To walk into the GHz range requires the consideration of every millimeter of design to be calculated.
Flawed circuits for sure. But the 555 isn't supposed to be the carrier frequency. It's the FM sweep modulation for the single transistor oscillator / FM modulator. The transistor stage is very similar to those simple FM transmitters / bugs. Notice the similarity to the Q2 stage in this circuit: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-joFourugXvs.htmlsi=ZB3W0OzhgENLjTpv&t=66
and even if the jammer circuits work and you can jam the cell phones you have to be so close to the device you want to jam the fcc could not detect and get evidence (unless you are jamming the fcc agent's phone in witch case they would still get bars on their phone as there is no verification or authentication to the tower just to give you bars). all you need is a simple oscillator to generate the fequency and some antenna circuit to make the signal into rf. you can even make a transmitter out of a crystal oscillator from vintage computer hardware they are found inside of a square or rectangle metal can with 4 pins they are used to generate clock signals for logic. without a signal to modulate into the carrier you can still jam a radio. power a 1 mhz crystal oscillator pulled from 80s computer boards and bring it near an am radio tuned to 1000 khz and the station will go blank. the reason most jammers get caught is because they use lower frequencies witch require more power and jam other devices near the frequencies (like the weather forecasting community feared with 5g networking). however such jammers could in theory be used to force people to use the chip or swipe for their credit card by jamming the signal used by the contactless payment system and force the customer to pay with chip and swipe witch is easier to skim.
That circuit requires free energy to work correctly. Please use any of the countless free energy generators you'll find in YT. A little bit of snake oil to lubricate the trimmers will help. ( And yes, please expose more of that nonsense.)
Long time ago I thought that i will try once these circuit. Thank you for clarifying that it is not working 😂😂. By the way you should expose the reality. We are glad to see your upcoming videos
4:42 5g uses 40ghz? How is my phone supposed to achive that kind of freacuency to send data? I feel like something is wrong with this table? Edit: i just googeled and 5g is inbetween 1 and 6ghz Edit 2: i saw the image and i think 5g high band (40ghz) is only used inbetween cell toweres for faster communication and 1-6ghz for phone to tower connection. I may be wrong
I remember being in an abandoned mine, on a pile of magnetite and having 100% cell phone coverage and being unable to receive data or make a call, it might be better to test transfer data and see if the connection is cut off
It is almost impossible to prevent people from finding schematics of non working electronic devices. But what one can do is not spread schematics or link to them if one has not tested them or does not know whether it is a working design or not. In a forum about electronics I visit on a regular basis we started including comments IN the image of a schematic stating whether a design is TESTED/WORKING or UNTESTED, so that if the schematic is picked up by some search engine (typically the text normally accompanying the schematic is lost), the status of the schematic is clear to the person finding it. This will hopefully help a beginner who can not see for himself whether a circuit makes sense or not to decide whether he wants to spend time and money on it or not.
YES please, expose as many as you can! Most of them publish any kind of content (mostly fake) just to get traffic and hence, ads revenue and no only that, they also link the "products" they use for making those projects, also receiving commission for the sales of said items. They take advantage of the lack of knowledge of regular people (because it takes someone like you to know it's fake). So thanks a lot and keep it coming! :)
I might have to make a video to expose the exposer... Dude, I like your channel, but please stay away from RF topics. At least on the jammer it's painful to watch. Nice job coupling of field lines on the two coils by aligning them exactly the one way that should be avoided at all cost. Just looking at the perf-board for an RF circuit gives me headaches. "With some basic electronics knowledge, it's obvious that this circuit can not do this." -> Well, certainly lacking some of that first part of the sentence for RF circuits. The NE555 doesn't switch the 'amplifier', which is really an oscillator, on and off, it changes the operating point (and thus the CE capacitance of the transistor, which in turn changes the generated output signal). His circuit certainly works quite well as a broadband jammer with harmonics extending well into the cellular band. IF built properly this will work for 2G in close proximity. However, it's effectiveness is extremely limited.
Btw once you tried out an overcurrent protection circuit using a relay. I was proposing if you could try out one using a transitor latch and differential amplifier. Like the differential amplifier circuit measurement the voltage drop across a shunt resistance and I output is connected to a comparator which trigger a transistor latch when the voltage drop across the shunt exceeds a certain value. Like instead of using the relay you use a transistor latch
Please do more of these, but also get a bit more into the technical side and explain the mistakes and what would be the correct approach (for non illegal circuits of course)!
4:42 is very inaccurate and I am disappointed, and that inaccuracy is not simply some "simplification". The most important factor in why it might not work is that the cell network actually uses multiple frequencies in conjunction. 4G even uses them at the same time. 2100mhz, 2600mhz, 1800mhz, 800mhz, 900mhz, you name it... So, creating interference on one frequency band will mean nothing, user equipment will simply jump onto another band and go on... Also, 5g is not only mmWave, so saying its 40 GHz is kinda missing too. Also B43 (3.8Ghz) is not that common on LTE, at least around Europe AFAIK. Band 42 (3.5GHz) is a bit more common, but it's mostly using existing 2G/3G bands like 1800MHz(B3) And 800MHz(B20). Rest of the video is great and properly debunks why shit circuits like these are waste of time, but I think getting the technical details right is important. I'm not asking you to give a full telecom course to the audience, but come on...
As soon as i saw they were using a 555 it was obvious it was a scam. GHz from a 555? I don't think so... What motivates people to produce obvious bs designs? Just the possibility of RU-vid clicks and ad revenue? How sad.
I think your time might be better suited teaching us, like you always have. Then again if this can help YT to take down videos and channels like that. It could help to get relevant info and people might actually learn or want to learn things like this. I think learning is awesome, when people showcase how to build non-functional products I don't think we learn. Its better to learn right than learn from others mistakes. I also think it can be safe to show somethings like do not put the black and red together. This has to be shown in a safe manner though and not shown as a build this item and test it on yourself. More of a there are reason why we dont connected them two wires as its not safe for anyone.
When you prove these circuits/videos to be fakes/don't work/do work and are illegal, won't you have a moral obligation to report them to RU-vid? I would think so. I imagine that just busting them and/or reporting them will incur the author's wrath, in the form of lawsuits, cyber attacks and attacks on your channel/videos. However, I would love for you to bust these characters, in the hopes that they would leave RU-vid. I am really tired of the YT engine suggesting them to me. So, I suggest you give it serious consideration and take steps to protect yourself... Such as opening a new channel that only does this one type of video and naming it such that your identity can not be discovered. My two cents... I will be your new channel's first subscriber. Oh, but be careful not to clue them in on how to make the circuits actually work. Cheers.
Sadly the scammers probably get as many (if not more on account of being simpler and therefore more approachable) as a video showing how to actually make one of these things. And it's obviously a lot less effort! It's like the engine / machine restoration videos that take chainsaws out of swamps and amazingly make them work again despite the end product being a different brand to the one they got swamp-fishing. Please do more debunking- I do worry beginners will try to make these things as a "hello world" type project and then when it doesn't work either decide it's their fault or just give up. Talking of fake, it would be perhaps interesting to pop into the Aliexpress basket some ICs to see which ones behave as expected- I know you did a project on fake ICs but it would be interesting to know the scale of the problem. I guess the issue is if they were good fakes the might behave as expected but just fail prematurely....
THERE IS NO FREE ENE... no, I mean SIGNAL STRENGTH! I am actually amazed fhat this thing works worse than a reflector that definitely can improve signal strength when used right, and ia entirely passive.
You can definitely do that! There are even fake videos showing how to wire and build electrical things that don't work and are dangerous for novice electricians, let alone electronics hobbyists. Keep rating these videos and let us know! I watch your videos every time you have a new post! Thank you!!
Thank you for the video and yeah, ignore those videos. There are lots of trash videos on every topic of electronics, they usually don't and can't do what they promise. They have clickbait titles and lots of view... the world is not perfect you know. We just stick to proven youtube authors :)
Can you also do Videos about aliExpress receivers/transmitters? I bought a video-transmitter on it, and it's really bad, i.e. the signal spills over to three or four surrounding channels, and when turning it on it interrupts a lot of other RF signals
when i was in 6th or 7th standard (age : 13 -14 years) i had wasted a lot of money while watching these kind of fake video at that time i am not aware of editing technique these fakers use .... Kindly expose everyone
I suggest you expose such nonsense RU-vid channels. They are literally serving face contents and still earning lots of money lol Well I have no problem with them earning money yet their content should be at least knowledgeable and yeah and has all the proof of working as your video does !
These fake videos are made primarily by Indian RU-vidrs and they have soo many viewers that doesn't understand the circuit. India is big, so getting that kind of views is possible.
it shouldn't be hard to create jammer. just use transmitter parts of old phone. find the circuitry powering the signal antenna, make the antenna active, activated antenna should interfere with other signals and mess them.
U should just report them, show them just give them more money, this channels are those who just post fake content like this in the video, perpetual/free energy, etc
@greatscottlab Basically a nice video, but the info about mobile technologies and their frequency is wrong. Please correct this! Should be more like this: 1G: dead. 2G: GSM. 850, 900, 1800, 1900 MHz depending on country 3G: UMTS. Mostly around 2 GHz. Also dead in many countries. 4G: LTE. Different frequencies, depending on country. Mostly around 700, 1500, 2500, 3500 MHz and others in that range. 3800 MHz is the maximum in use, but not common I think. 5G: 5G (sometimes NR): The 40 GHz can be used by industry within an idustrial hall, same as some other freqencies, but that's not really relevant. Mostly uses 600, 700, 800, 900, 1500, 2100, 2300 and 2600 MHz. For example in Germany, 3G was turned down to use its frequencies for 5G. Some more information to the names: 1G: old shit nobody cares about. In Germany called "D-Netz" etc. 2G: GSM: "Global System for Mobile communications". First digital world-wide system. 3G: UMTS: Needs to sound better than GSM, so it is "Universal Mobiel Telecommunication System". 4G: LTE: Needs to sound better than UMTS, so it is "Long Term Evolution". 5G: The previos one was good and first versions of 5G (called 5G non-standalone) rely on it, but it wasn't that much of a long term evolution. However, what sounds better than that name? People did not really find something, so it is just "5G". Sometimes is is referred to as "NR" for "New Radio", but thats just to have anythin kind of a name.
How could RU-vid missed that channel? I have seen many channels, especially related to health, were banned or at least were suspended temporary, due to RU-vid accused them spread fake information.
I guess in the case of fake circuits, the damage is limited to release of magic smoke, general annoyance, sadness and a potential to drop electronics as a hobby. Unfortunately, this doesn’t count as serious enough as far as YT is concerned. Shame.
@@simontillson482 but if the viewer is millions, it become a serious dsngerous. Compared to the health channel the viewers were 'just' around a million, could be more and could be less.
@@StrsAmbrg My point was that while it may be fake information, an electronics video doesn’t usually present any danger to the public (unless they’re giving instructions on how to build dangerous devices, but even then I think we can mostly agree that huge lasers and kilovolt power supplies are obviously dangerous and they mostly get away with that anyway, by including suitable warnings - StyroPyro and many others wouldn’t have a channel otherwise!). The situation with fake information in health videos is way more serious and dangerous, which is why they get taken down a lot more often.
@@simontillson482 actually the healt infortion was not due to the information was fake but due to the content creator was not certified for the issue he/she dealth with even though he/she was a doctor.
Looking at the frequency output that the "jammer" spat out makes me a little bit concerned. 125 MHz is close to the Air Band emergency frequency of 121.5 MHz, and given that you can have some MHz variance with hand wound coils, adjustment etc., some poor sod building it might inadvertently jam that frequency. Now, given the power level of the "jammer", not that big a risk of causing harm, but you may still get to provoke the curiosity of PTT (Postal, Telegraph and Telephone) authorities in your country, and all the interesting times (in the ancient Chinese curse sense) it brings with it. Whenever you build something which transmits RF, be attentive that they do not spit out stuff on important frequencies (such as emergency (beacon) frequencies), either directly or because of poor overtone filtering. PTT's generally are very cranky when you mess with such frequencies, and are not too happy about any other frequencies being jammed either. Maybe a TL;DR QnD walkthrough of global ISM bands is in order, @greatscottlab ?
