Testing the shielding effectiveness of a emergency (Mylar) blanket. For more information about EMP preparedness, go to disasterprepar....
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@rgbcolor64505 жыл бұрын
+1 for Dr. Bradley and all his hard work and the information he provides. This guy is great!
@disasterprepper5 жыл бұрын
Thanks, much appreciated.
@melaniel.s89903 жыл бұрын
Aluminum foil much better than the Myler blanket...
@disasterprepper3 жыл бұрын
@@melaniel.s8990 So true!
@tylermiska83805 ай бұрын
Thanks for this experiment. I was about to line my curtains with these (covered with cloth for aesthetic value) and you just saved me $15
@SurvivalLiving5 жыл бұрын
Really appreciate you going over this and your other videos for us. Having the equipment for these tests really helps us on how we fabricate our faraday cages. Thank you
@disasterprepper5 жыл бұрын
Sure, you're most welcome.
@Genesis.1-13 жыл бұрын
I love these videos. Informative and easy to understand. D. Bradley knows his stuff and I appreciate the time he takes to share his knowledge and insight.
@disasterprepper3 жыл бұрын
Thank you!
@TheWtfnonamez2 жыл бұрын
It just occurred to me that being an EMP scientist much get very expensive if you forget to shield all of your fancy science equipment from EMP.
@neilv67542 жыл бұрын
Long term subscriber here. Just wanted to say thanks doc for all your videos. And thank you for always answering my questions. It truly is appreciated sir. I thank you.
@disasterprepper2 жыл бұрын
Thanks Neil! We appreciate your support.
@tmt84255 жыл бұрын
Interesting test. Thank you for showing us this. I would have thought mylar would do better.
@disasterprepper5 жыл бұрын
I was a little surprised too.
@shalom1688 Жыл бұрын
God Bless You Dr Bradley. Thank you for the work that you do, for sharing with us (the layman) your testing in a most understandable way. I am grateful. By the way, I have your book "Handbook to Practical Disaster Preparedness for the Family" What a gift to us. I've read a good bit of it but seem to dwell on my area of responsibility in our home, and the things I am physically able to do. From your chicken wire experiment and comments, I did place on every window of our home, fine mesh screens. I also purchased from Amazon, silver shielding fabric curtains for every window - they were very expensive and took a year to collect. I am also bought a small metal trash can with lid and a shielding gasket for an assortment of things (glucose meter & strips for one. Thank you. My son & I are next considering your car shielding bundle. I shared with my son your video & web page. My husband is not yet on board with this. I don't always understand that. My questions for you is in the area of food and radioactivity. I dehydrate a lot of vegetables and probably have 8-10 month worth in our pantry, all of which is vacuum sealed in glass canning jars. Those jars are then stored in translucent plastic jarboxes by the dozen and placed on an outside wall of a frame house in a dark closet. Your fair guess, would this be safe? Very Sincerely, Fay, Ohio
@jackburton372115 жыл бұрын
thank you for your efforts in this field. Your channel should have thousands of views!
@disasterprepper5 жыл бұрын
Thanks Jack.
@synthetictelepathy Жыл бұрын
IT HELPS ME , WITH NEUROLINGUISTIC SYNTHETIC TELEPATHY
@mcdevious22292 жыл бұрын
Eight dB of shielding isn't surprising. I've tried this kind of experiment with cellphones without much luck. I tried putting the phone in an aluminum box and it would still ring when called. Thanks for doing this.
@jameskrivitsky97155 жыл бұрын
Thanks Dr. Bradley for the additional video. Interesting to see the minimal effectiveness of the Mylar blanket in comparison to the static bags in your previous video. I am anxiously waiting for the good news when your EMPStorm will begin shipping. J K
@disasterprepper5 жыл бұрын
Thanks James. The EMPStorm is sitting up at UL, waiting for them to certify it. I called them, and they said they had some kind of in-house audit, which is why it's been going so slow. Hopefully, it'll get moving soon. I'm at their mercy at this point. Thanks for your patience.
@Heinrich998 ай бұрын
I read on a website you can use the inside your microwave "turn off of course" to block EMP. The testing consisted of a cell phone being called from the outside. The test was conducted to show how to protect electronics from an EMP blast.
@GatoGordoSocialClub Жыл бұрын
Thank you for the test, Dr.
@billcooperpatriot10593 жыл бұрын
I heard that it has to be grounded. You are even supposed to ground your metal garbage cans. Maybe test with and without earth ground.
@ranichahal7942 жыл бұрын
How do u ground something? My garbage can area is buzzing like a bee when turn my heat on
@jeremiahdssdentmorgan33412 жыл бұрын
@@ranichahal794 stick copper rod into the ground attach wire to rod in ground and object you want grounded !!!
@GodKnowsITry454 ай бұрын
Thank you for the mylar EMP test. I would love to see an EMP test using Faraday cloth. I've wrapped some of my electronics in it and wonder if it does better than a heavy gauge aluminum foil.
@robertgreen3170 Жыл бұрын
Curious...did you ground your shield? Did you check the resistivity or continuity of the mylar blanket? Did you try wrapping your analyzer tightly in a blanket and then ground it? Those might have been some very simple tests you could've performed.
@Justin.JM.McNeil Жыл бұрын
I'm still waiting for your video on this
@Yeshuaschild936 ай бұрын
Hey I'm a targeted individual, I endure havana syndrome dew, mkultra programming and voice of god weapons.. if I ground mylar blankets would it help?
@TheSpecialK452 жыл бұрын
Try grounding the mylar blanket with a gator clip and a copper wire leading to a solid ground and then see if that happens to make a different reading on the meter.
@disasterprepper2 жыл бұрын
I did this with another Faraday cage in a later video. No real difference. The incident energy is in the far field, so grounding doesn't have a huge effect. Instead, the metallic barrier acts to reflect and absorb energy, even if it's not grounded.
@Michael-gu6ki2 жыл бұрын
How do I protect my solar panel from an emp attack?
@tomkewan6255 жыл бұрын
All your books, products and videos have helped us prepare for what's likely coming. Thank you for your time and effort. At least some of us will have a chance at getting through it.
@disasterprepper5 жыл бұрын
Thanks Tom. I appreciate the kind words.
@Fynn-3 ай бұрын
Found it thank you for the details
@prairiepatriot21622 жыл бұрын
Another very helpful video, thank you for sharing the results of this important work.
@c3h84ever2 жыл бұрын
Appreciate your approach, I have an experiment for you, as a person with a pace maker genuinely concerned regarding an EMP ,how about some type of test on portable shielding for pacemakers, I've looked and can't find anything on this.. I could feel the effects of our "smart meter" prior to shielding with a 5 gallon bucket,Aluminum foil and copper wire coils to ground.. Thanks PS I subscribed
@mondavou94084 ай бұрын
I like your experiment. Thanks for sharing.
@FidoHouse2 жыл бұрын
Exemplifying Scientific Method. Thank you.
@WorldAquariumSingapore3 жыл бұрын
Nice experiment thanks
@brianshanahan38783 жыл бұрын
SO glad I found your channel / videos!
@GladYouMissed Жыл бұрын
I wonder how it handles higher frequencies such as 2.4g and 5G
@lronhubbard8580 Жыл бұрын
It works
@AntstrengthUnlimited Жыл бұрын
Thank you for this str8 forward answer 👏🏼👏🏼👏🏼
@susiea1419 Жыл бұрын
I wrapped my phone up in a Mylar bag and out it in another one and phoned it, nothing!! Does that mean it’s shielded or just not receiving a phone signal?
@hobbyhermit662 жыл бұрын
Thanks for doing what you do. This answered a question I've had for some time. 👍👍🖖
@nomadsurvival49525 жыл бұрын
Question what kind of tape did you use I had similar problems with using Mylar bags until I taped the seams with aluminum tape then it worked for me... But for small electronics I like cookie tins and then tape the seams with aluminum tape without the aluminum the tins don't work..
@disasterprepper5 жыл бұрын
I have tried various tapes with EMP bags and ad hoc Faraday cages. Wide aluminum duct tape seems to do as good as anything. In this experiment, I wrapped the second Mylar sheet all the way around to the back, so I don't think energy could have easily leaked through the taped seams. It's essentially the same setup I used when testing aluminum foil.
@heaven-earth1083 жыл бұрын
i wonder how it wouöd look with 2 or 3 layers of this blanket ?🤔🧐 thank u for content 🙏🏼
@salsa0909682 жыл бұрын
Was wondering the same thing. Has to be a cheaper way to cover items that need to remain plugged in. Ferrites are only one component but still need to cover a ham radio with that expensive cloth he tests in other videos.
@ausboy92512 жыл бұрын
Love your work mate really interesting video
@Masteradamant Жыл бұрын
At least we learned that we need at least 10 layers of thermal blankets to have a significant shield against emp. I lost 3 inverters to emp and I was burnt in my own house . I’d like to know how strong an emp is in db now
@extendedp15 жыл бұрын
Thanks for another great test!
@disasterprepper5 жыл бұрын
You're welcome!
@jeffdunnage99714 жыл бұрын
Thank you, you saved me time and money.
@insanityspokentheluniticplayer Жыл бұрын
What if you did a faraday sandwich? A device inside the Faraday bag, inside an ammo box, inside a bigger box lined with this blanket stuff? 🤔 overkill?
@joegoodeyon61315 жыл бұрын
Have you tested the EMP Shield product? If not I would provide you with one to test.
@disasterprepper3 жыл бұрын
Sorry, but I try not to comment on other company's products.
@m1u2j1o93 жыл бұрын
@@disasterprepper An Answer is your view or experience for a particular question. A Comment is your view on a particular answer. An answer is true but may be precise or general in nature. Whereas a comment is a subjective opinion that may be correct or incorrect or neither. As a doctor, you have a duty-- if these guy's are swindling people, and you're the guy to call bullshit, that would be truly impressive.
@SpicySpleen3 жыл бұрын
thank you for your work
@Cetok014 жыл бұрын
Interesting experiment; I've wondered myself how effective mylar might be. Just curious: Is the metal deposited on only one side of the plastic matrix, or is it sandwiched between layers? In either case, could the plastic matrix potentially insulate against continuous metal coverage and inhibit a 'wave-tight' seal, allowing gaps/signal bleed in coverage?
@disasterprepper4 жыл бұрын
I'll double check, but just like EMP bags, I believe the metal is sputtered in between plastic layers. The thin layer could prevent a tight seal, but by wrapping it around, most, if not all, of the seams should be covered. Exposed conductor would be better, but even crafted as they are, EMP bags can provide 50+ dB of shielding across frequencies of interest.
@lronhubbard8580 Жыл бұрын
Buy a grow tent and flip it inside out.
@user-em7pr9iz2p8 ай бұрын
Are you aware that they only metallize one side of the PET on mylar? if the metallized sides aren't making contact with each other then wouldn't that weaken the effectiveness?
@jublywubly2 жыл бұрын
This is a great video! Thank you for making it.
@manictiger3 жыл бұрын
Here's a guy that maxed out his intelligence stat and science skill tree.
@havanamarlena5 ай бұрын
Hi, Dr. I sleep in a cave with multiple layers of heavy aluminum and cast iron with sound proofing material. I am still getting attacked but it is dampened down. I am also capturing the attacks with my ultrasonic recorder. Do you have any other suggestions? These attacks involve classified tesla technology.
@rolliekelly67832 жыл бұрын
Do you have any information on protecting welders who have an embedded pacemaker?
@brucewayne-cave4 жыл бұрын
Much Thanks !
@derpnerpwerp3 жыл бұрын
I have a question for you. Hopefully you see this. Seeing your antenna made me think about the antenna I have in my attic.. I am a new homeowner.. I was replacing my doorbell transformer recently and I noticed there is a large antenna in my attic with the coaxial cable cut off. Is this a hazard? I am not sure if I could easily remove the antenna it is quite large. Should I be worried about it? I didn't think anything of it till I saw your videos and I saw a news report talking about increasing solar storms. Is it possible that an emp hitting the antenna would cause a fire? The coax is just frayed and laying in insulation. I dont have any emp protection. I am not sure I could afford it.. might be better off just buying some flint and other mechanical survival equipment. Also I have a large 12000 watt generator that I bought after the statewide power outages here in Texas. I am considering shielding that.. but I am not sure the best way to do it. I see some 400 dollar bag for generators but it is too small and expensive for me
@AMPProf2 жыл бұрын
It's More likely The Antenna Will Attract Lightning Strikes!!!!!! Does the Antenna have Lightning ground... Also Also YES EMP will be Amplified by Antenna! hells a near field attend will boost to some degree every Signal (except photons) on the EM Scale
@penpoint77754 жыл бұрын
Thank you for sharing your work. I was wondering what the result of this experiment might be if you doubled or tripled the layers of mylar. Thanks again.
@disasterprepper4 жыл бұрын
Shielding roughly goes up additively in dB, so two layers would come close to doubling the dB level of protection to closer to 16-20 dB.
@salsa0909682 жыл бұрын
Making a EMP medical bag for all my medical devices. Glucometer, Digital BP cuffs, O2 Sat finger monitors, Digital Stethoscopes (expensive), thermometers, Kardia EKG. Commenting to give persons with health issues or healthcare professionals suggestions on items they may want to secure. Still searching for portable AED I can afford. Few others like an IV Pump but not in rush with a pump because would need to figure out a source for IV solutions.
@blessed45962 жыл бұрын
@ Penpoint 777 Exactly my thoughts, or perhaps simply quadrupled it to be exact! 💙
@ChristianPrepperGal4 жыл бұрын
Do you think a mylar bag that is 7 mil thick and heat sealed closed would do as good or better than aluminum foil in protecting electronics from an EMP?
@disasterprepper4 жыл бұрын
I think foil would do significantly better than a typical mylar bag. If you're talking about an anti-static or EMP bag like the ones I sell at Disasterpreparer.com, they provide around 50 dB of shielding (about the same as a layer of aluminum foil).
@ChristianPrepperGal4 жыл бұрын
@@disasterprepper Sounds good, thanks!
@KenJamesJr4 жыл бұрын
You should be measuring for 60 GHZ (5G), damage instead of 500 MHZ..
@disasterprepper4 жыл бұрын
5G wasn't the focus of this test. Rather, it was targeted toward the frequency content of an EMP (which goes out to about 1 GHz).
@LolaMoonflower4 жыл бұрын
I have an insulated lunch bag with a silver lining...I'm wondering if this has any emf protection at all... I'm thinking this would be a place for my cell phone at night..
@disasterprepper4 жыл бұрын
Lola Moonflower I suspect it probably offers a little EMF shielding from the phone’s emissions, but if possible, it would be better to shut the phone off. Even putting it across the room would help quite a bit.
@LolaMoonflower4 жыл бұрын
@@disasterprepper I'm sure that would be ideal however inconvenient...of course that would be why I'd like something closer and still convenient and still something I could grab easily if need be... perhaps a lining of the emf fabric inside the lunch bag... Is there some kind of rating on the fabric I should look for..
@disasterprepper4 жыл бұрын
@@LolaMoonflower I'm assuming that you still want the phone to receive calls and texts, right? If so, you might consider using an anti-static bag (aka EMP bag). I have some on my website at disasterpreparer.com, but you can find them elsewhere. They can cut the phone emissions by about 99% but still have enough signal for it to receive calls.
@sl49834 жыл бұрын
.
@explained37999 ай бұрын
Thank you for testing mylar. I was curious. I am also curious what would happen if the mylar was doubled - two layers - would that make a difference?
@smadden911 Жыл бұрын
Wouldn't these boxes need to be taped and sealed? This is just wrapped.
@lancepittman5066 Жыл бұрын
Just out of curiosity, are you employed by disaster preparer?
@amongthegreat8236 Жыл бұрын
Thanks for the research
@markthomas45945 жыл бұрын
Great stuff thanks for sharing,
@XX-fq8kp Жыл бұрын
THANK YOU
@sdp83643 жыл бұрын
Can you tell me if my pacemaker and defibrillator need to be protected during an EMP event? Thank you!
@disasterprepper3 жыл бұрын
I can't say for sure, but I did an analysis of a Medtronic pacemaker a couple of years ago, and it looked like it would survive. It might experience an upset, but it was unlikely to be damaged.
@sdp83643 жыл бұрын
Thank you so much for responding! I appreciate that and your insight!
@kellycarver2500Ай бұрын
You need to make some videos on how to protect from DEW, like is blue paint the only answer? They are using this all over the place, and it needs to stop! Until then, what else can we do besides blue paint?
@springalingading4 жыл бұрын
What’s the cheapest easiest thing I can do to see if my chronic skin burning is from emfs? I live in a basement and they have like 10 different WiFi networks that we can hook into between this house and with the two neighbors close by. I know nothing about all this. I jam chronically ill, skin burning being the worse and was wondering if you could recommend something cheap I could by to drape over me or wrap up in or something to see if I can get away from these frequencies to see if it help the skin burning. Any advice is much appreciated. I react to food and odors too. I retained the heavy metal Gadolinium in mri dye contrast.
@disasterprepper4 жыл бұрын
I'm really sorry to hear about your suffering. It sounds like you suspect it might be related to electromagnetic fields (EMFs) but are open to the idea that it could be due to some other cause. That's good. Many people assume that EMFs are the source of their issues, when in fact it could be something else entirely. One way to get some indication is to simply get away for a few days, take a vacation somewhere away from all the technology. If you see improvement, it likely means your problems are environmental. It still won't confirm that it's EMFs, but at least you'll know it's not an underlying health issue. There are many ways to reduce fields inside your home, but most are not cheap. One thing you could try is to buy a conductive blanket (maybe something made out of silver thread, since they're very soft). You could wrap it around you when you're sitting around, or sleep with it over you at night. Again, if it gives relief, that would be a pretty good sign that you might be hypersensitive to EMFs. There's more to know on the subject that I can explain in this email, but you might seek out a reputable book on the subject to get an understanding of the sources of low-frequency magnetic fields and high-frequency electromagnetic fields.
@springalingading4 жыл бұрын
disasterprepper thank you for your reply. A friend who has this sensitivity recommended I buy this sheet/ blanket to try. Do I just lay under it or does it need to be grounded? I am not even sure what that means. www.amazon.com/RFID-Shielding-Silver-Fabric-Roll/dp/B01KYJT0RA/ref=redir_mobile_desktop?_encoding=UTF8&psc=1&ref_=sspa_mw_detail_6
@chrisanderson74952 жыл бұрын
How about aluminum foil? And ground it.
@mohdhaq6404 жыл бұрын
Really appreciate your effort. Guide use how we can protect from radiation
@sl49834 жыл бұрын
He said it doesn't work.
@jadehare4 жыл бұрын
Obviously this doesn’t work. It’s an EMP, a survival blanket won’t stop that. We should test the effectiveness on blocking 5G because some people have been lining their walls with them which sounds a bit weird
@ravipillai75534 жыл бұрын
Great presentation, but for the short answer go to 5:44
@disasterprepper4 жыл бұрын
Thanks Ravi.
@medved40303 жыл бұрын
Wow, someone should have showed this to Chuck McGill
@omniteksilbear45592 жыл бұрын
Emp Doc what would you recommend for 122232 milliard volts of rf protection. I've got aluminium and a hard foam but it still falls short.
@disasterprepper Жыл бұрын
Sorry, can you provide a little more on this question. Not sure what you're asking.
@witharebelyell2762 Жыл бұрын
How about the siding from a regular corrugated metal building? I wonder if my house (metal roof, metal siding and grounded) is good enough against an EMP 300 miles away. I cannot get a cell signal at all inside.
@tomarthur6763 жыл бұрын
That is surprising. Just guessing that the skin effect depth is too shallow.
@62Cristoforo2 жыл бұрын
The material is adequate, but the blankets as they are, are just too thin to be of any use.
@inthehouse9062 Жыл бұрын
Can you recommend a faraday blanket?
@korradog8110 ай бұрын
Thankyou😊
@rachelhancock6833 Жыл бұрын
Could this block RF radiation
@Pampered_gal11 Жыл бұрын
Aren’t they flammable ?
@viktorbozicevic62195 жыл бұрын
It would be shielding better if you put two or more of those blankets (layers) around the crate and to the opening.
@disasterprepper5 жыл бұрын
Yes, I'm sure that's true, but I was trying to get an apples-to-apples comparison. One layer didn't do very well. Other materials, such as aluminum foil are significantly better.
@sndep9617 Жыл бұрын
was the blanket grounded?
@MitzpatrickFitzsimmons Жыл бұрын
very interesting video! I am curious if the 8dB shielding is cumulitive with layering? Would 5 layers give 40dB of shielding for instance?
@brucefoley165810 ай бұрын
What about a cooler or like a bag to keep your pizza warm
@ramirocortez63924 жыл бұрын
What would be best protection for my generators?? Thank you!
@disasterprepper4 жыл бұрын
Generators are pretty robust, but if you want to protect them, I recommend covering with conductive fabric. You can find your own or get some from disasterpreparer.com/product/emp-cloth/.
@kitty93923 жыл бұрын
Thanks for doing this Do solar panels need EMP protection?
@disasterprepper3 жыл бұрын
If they're not connected to anything, probably not. If they're connected into a system, you should put broadband ferrites up by the panels and down by the inverter. See disasterpreparer.com/product/emp-ferrites/.
@kitty93923 жыл бұрын
@@disasterprepper Thank you for the valuable information and the quick response! Have a fabulous holiday weekend.
@jaysmith3782 ай бұрын
You need to eliminate air gaps in your shielding!!! HOW DO YOU NOT KNOW THIS?!? Signal bounces aeoubd, if there are any gaps in your shielding you will get signal! If you had tightly packaged your crate and taped the second mylar blanketdl down to eliminate air gaps, your result would have been much different!
@captainflux49673 жыл бұрын
Here’s where the cool science went😎
@colt45peacemaker5 жыл бұрын
I would have liked to have seen the mylar cover grounded. What frequency is an EMP? All frequencys I guess Close to event and longerwave at distance, detectable over horizon for inonospheric reflection (Skip). Long wire receiveng will pick up more energy converting it to destructive voltage. Short wires far less RF energy absorbed. Unplugging equipment and antennas can do much to protect gear. I believe threat of damage by man made EMP is over rated unless very close to emission source. Wires and cuircut traces have to be resonant to the frequency inorder to absorb energy.
@disasterprepper5 жыл бұрын
It ends up that grounding really doesn't have any measurable effect when in the far field of an RF source. Some people think that attaching a ground wire would help shielding, but the inductive reactance of the wire is quite high at RF frequencies. Even if it wasn't, the conductor itself acts to reflect and absorb the RF energy, regardless of whether it is grounded. As for the EMP, it is a broadband event (narrow in time, broad in frequency span). Most sources suggest a frequency span from about 100 kHz to 1 GHz. You're absolutely right that longer conductors pick up more energy, especially from a broadband event. I would rephrase your comment about wire and circuit trace resonance to say that they have to be an appreciable size in relation to the wavelength of the incident signal. Usually, the rule of thumb is that if the conductor is 1/10 of the wavelength or longer, it will efficiently receive (or radiate) energy. I appreciate your comments.
@oladeegriffin74343 жыл бұрын
What about a 7 mil 5 gallon mylar?
@disasterprepper3 жыл бұрын
I've only tested thin mylar space blankets, and they didn't do very well (about 10 dB shielding). The reason is that the sputtered metal is just too thin. I don't know about a 7 mil mylar bag.
@sirskaven7624 Жыл бұрын
Could these be used as layers in an accumulator?
@adcaptandumvulgus42523 жыл бұрын
thanks for informing us
@harveyblack26993 жыл бұрын
Interesting. thx.
@fostardust82845 жыл бұрын
how about testing against common frequencies like wifi 2ghz and 5ghz?
@disasterprepper5 жыл бұрын
Unfortunately, my generator only goes to 1 GHz. From my experience, typically things that don't shield well at hundreds of MHz don't do well at higher frequencies either. I do plan to do some 5G (tens of GHz) testing this fall using some other equipment.
@iceemadcap46073 жыл бұрын
God bless and the universe to you doctor.
@mrthomaslaux12 жыл бұрын
Thx
@thetastelesschef74633 жыл бұрын
Is the front cover supposed to be sealed tosome degree so that nothing can get in or out? or if that a misunderstanding?
@disasterprepper3 жыл бұрын
The entire structure should be sealed with something conductive to create an effective Faraday cage. In this case, I wrapped a crate with a mylar blanket.
@user-xw4hn7lb3x6 ай бұрын
Add a ground wire to the blanket & try again. 😉
@zerobow94132 жыл бұрын
HA nice one you saved me $50 worth of mylar foofoo, wanted to wrap my Escooter in the trunk [if the car dies] guess i`ll be using SS material etc thanks for the vid !
@tropicalcocinut98343 жыл бұрын
Velostat will block microwaves, Mylar and copper film will do the rest.
@tarapos5 жыл бұрын
Another great video
@disasterprepper5 жыл бұрын
Thank you.
@johnhorne34575 жыл бұрын
jwh When do you think we will receive our units
@disasterprepper5 жыл бұрын
@@johnhorne3457 It's currently at UL. I've been answering their questions on a daily basis. They're trying to determine the best way to test the breaker tripping action. I can't say how much longer it will take, but please know it's moving forward.
@jonfishmacon3 жыл бұрын
i was wondering thanks
@chrisandkatiebrooke34984 жыл бұрын
Does line of sight matter? That changed in the experiment too.
@disasterprepper4 жыл бұрын
The line of sight is broken in the experiment by introducing the conductive barrier. Of course, that's what we're trying to do. If you blocked the line of sight with cloth or paper, it wouldn't have any measurable effect. But if you cover the measurement device with something conductive, it blocks the RF energy.
@pt54882 жыл бұрын
Did you try this experiment using radiant heat barrier? I would like to see those results.
@disasterprepper2 жыл бұрын
I've not tested with radiant barrier, but I suspect it would work well if you cover the seams with conductive tape.
@eleranalimitless23634 жыл бұрын
What material could be used for UHF frequences protection. Faradey cage could be made with polyester+silver fabric?
@ladymercy52753 жыл бұрын
It's less a matter of micro-geometry of the composite elements, more so the macro-construction of the antenna or the shield. As is, that Mylar blanket _will_ dampen electromagnetic frequencies, but only above a relatively high frequency threshold. If he were to converge the antenna's directional gain to a tight beam via a parabolic reflector that was aimed parallel with the Mylar blanket, or if he folded the material like a curtain blind and kept the antenna's radial transmission waveform demonstrated in this video--if either of those conditions were met--then the threshold at which the signal would be dampened would occur at lower frequencies and above, depending on the aggregate cross section of the constructed shield. Since the wavelengths tested here far exceed the depth of the Mylar blanket's aluminum layer, they are able to fully saturate during the period of a single hysteresis cycle of the signal generator that powers the antenna. Ergo, the material becomes essentially electrically neutralized insofar as each individual elemental particle's available inertia to off-set the phase difference of the radially generated electromagnetic wave. In other words, whether the angle of a given photon path is aimed left or right, if it still comes out the same on the other side, then no significant dampening of the generated signal can be observed. But if the beam was focused into a parallel beam, or shield was folded like a curtain blind, then a small divergence in any given photon path generates a relatively higher divergence from how the antenna's signal would be transmitted compared to if there was no shield at all. Like this: [ ϴ + 1 ] =============/ / [ ϴ + 2 ] =============\ \ [ ϴ + 3 ] =============/ / [ ϴ + 4 ] =============\ \ [ ϴ + 5 ] =============/ / vs. [ ϴ + 1 ] =============| | [ ϴ + 2 ] =============| | [ ϴ + 3 ] =============| | [ ϴ + 4 ] =============| | [ ϴ + 5 ] =============| | Note that an optical beam's waveform maps transmission angle (ϴ) injectively with respect to transverse displacement. (+1,+2,+3,+4,+5) which basically means that any given photon path moves transversely with respect to the change in the angle from which a beam-formed antenna radiates its generated signal--i.e. if you point a planar beam north, then oscillations in its frequency modulation causes a proportional transformation in its electromagnetic flux in the east or west directions. All that's just to say that my cute ASCII graph there _is_ technically accurate. *tl ; dr* Make it corrugated enough, and you can essentially use any lustrous composite for your electromagnetic shield's construction. 👍
@lronhubbard8580 Жыл бұрын
No it has to be mylar
@HardcoreFourSix5 жыл бұрын
have you tested foil-backed house wrap?
@disasterprepper5 жыл бұрын
No I haven't tested that yet. I'll try to do so sometime soon.