Wireless charging, 1.9kw @ 1.3MHz Go Disney - Page 1
Forum section: electronics / general

author: kd6oji
author_rank: Contributor
timestamp: February 23, 2017, 07:27:05 pm
content: Well, seems the engineers at Disney have found a way to do wireless charging and power.http://www.iflscience.com/technology/disney-researchers-make-wireless-power-transfer-breakthrough/Seems legit, but 1.9kw @ 1.3Mhz in an aluminum faraday cage sounds a bit microwavish to me, lol.and 1.9kw input to get a few low power devices to charge? inefficient.Just laymen observation, of course, and I can light a fluorescent tube with a 4W CB radio by placing the tube near the antenna, but it's not a great device by any means.Hope there aren't anyone using the copper poles for other endeavors lest they get bitten by the RF bug.

author: Halcyon
author_rank: Unknown
timestamp: February 24, 2017, 01:29:49 am
content: I did read this arcticle too. Still a few obstacles to overcome. I guess one of the biggest issue has to do with safety. There is a minimum safe distance you need to be away from that transmitter.

author: Brumby
author_rank: Unknown
timestamp: February 24, 2017, 01:53:01 am
content: I raised an eyebrow with the statement "Completely safe", just because it complies with what someone has written down - from past experience.However, as far as I am aware, that past experience does not include data on deliberate immersion of living organisms into fields of such power and for extended periods.That aside, it has always been a topic of interest to me.

author: Ampera
author_rank: Super Contributor
timestamp: February 24, 2017, 03:53:56 am
content: Quote from: Halcyon on February 24, 2017, 01:29:49 amThey also have that for Ubiquiti APs.

author: Halcyon
author_rank: Unknown
timestamp: February 24, 2017, 06:57:12 am
content: Quote from: TwoOfFive on February 24, 2017, 03:53:56 amI have 3 UAP-AC-PRO access points dotted around the house, including in my bedroom. I'm not worried about that. Their higher power and 24GHz gear, yep, wouldn't want to live too close to that.As for the 1.9kW wireless charging experience mentioned by the OP, no way I'd touch it let alone come too close to it. It's something you only do once. RF burns aren't nice.Here's an example from a 50kW AM transmitter:

author: vk6zgo
author_rank: Super Contributor
timestamp: February 24, 2017, 07:40:25 am
content: Quote from: kd6oji on February 23, 2017, 07:27:05 pm"Gawrsh, Mickey, that sounds like bullshit!"

author: fubar.gr
author_rank: Unknown
timestamp: February 24, 2017, 08:04:06 am
content: Quote from: Halcyon on February 24, 2017, 06:57:12 amAmazing way to listen to an AM station! You get a free plasma speaker too

author: vk3yedotcom
author_rank: Frequent Contributor
timestamp: February 24, 2017, 09:42:12 am
content: 1.3 MHz is in the AM broadcast band. It wouldn't meet EMC specifications so even if it did work it wouldn't be able to be sold.Even in countries that have stopped AM broadcasting there are likely to be harmonics which could interfere with other radio devices.

author: MrW0lf
author_rank: Frequent Contributor
timestamp: February 24, 2017, 12:02:48 pm
content: When I started messing with electric stuff dad (former pro E tech) warned me - in the military they had only one young guycompletelybald - it was radio technicianAlso it is scientifically proven fact that with nearby high voltage powerlines child leukemia rates spike.However they were puzzled why rates do not vary as square of distance (mag. field), but are linear instead.IMHO what was not taken into account in this research - powerlines often act as wideband RF noise source.

author: fubar.gr
author_rank: Unknown
timestamp: February 24, 2017, 03:45:32 pm
content: I think the link between leukemia and HV lines has been debunked.

author: MrW0lf
author_rank: Frequent Contributor
timestamp: February 24, 2017, 11:23:06 pm
content: Quote from: fubar.gr on February 24, 2017, 03:45:32 pmAlso radiation contaminated food is suddenly ok in Japan after Fukushima etc.Whatever status quo is made norm and declared safe, theres profit in it.From USSR times around here I remember many public safety regulations whichwere instantly demolished in '91 because stood in the way making profit...

author: linux-works
author_rank: Super Contributor
timestamp: February 25, 2017, 04:04:46 pm
content: Quotetrump likes this idea very much....;(

author: Halcyon
author_rank: Unknown
timestamp: February 26, 2017, 12:47:26 am
content: Quote from: MrW0lf on February 24, 2017, 12:02:48 pmYou do realise cancer itself doesn't cause baldness? It's the chemotherapy that causes that. Maybe the guy was bald from all the stress :-)As someone has already pointed out the living near HV power lines does not correlate to higher rates of cancer. If I had to guess, it's the quality (or more to the point lack thereof) of food these days. The amount of processed crap people eat is astonishing, even in a country like Australia where fresh produce and good quality dairy and meat is widely available for a reasonable price.

author: Alex Eisenhut
author_rank: Super Contributor
timestamp: February 26, 2017, 01:55:26 am
content: Paul Brodeur, is that you?

author: vk6zgo
author_rank: Super Contributor
timestamp: February 26, 2017, 04:19:55 am
content: Quote from: Halcyon on February 24, 2017, 06:57:12 amThe Bullshit is strong in this one!We are supposed to infer that the mast involved is connected to an active 50kW AM Transmitter.This is not so, for the following reasons:-(1)The antenna is initially shorted, then when the cable is removed, an arc appears.A Transmitter seeing a short on the feeder will turn off for a few seconds, then try again, & if the short is still there, lock itself down, requiring manual restoration.That being so, it cannot supply power after being shorted for some time.(2)The arc which occurs is too small, & the "singing arc" too low level & noisy.When I worked at a 50kW site, a favourite trick was to place a short cct between two nominally earthed points, the mast hut downpipe & the chainlink fence surrounding the mast base.We got a nice "singing arc", (a bit louder & cleaner than the video), but it was eventually banned by the Boss, as we had burnt too much off the downpipe!On another occasion, as I was returning from doing "mast hut readings", a distant lightning bolt caused one of the "horngaps" at the mast base to arc over.The RF maintained the arc until it travelled up the horn & self-extinguished.During this time, the "singing arc" bellowed out the Football results at a similar level & quality to a large PA system----much louder than in the video.My suggestion is that the mast he is playing with, is in fact,disconnected from any Transmitter, & the RF appearing at the feeder is pickup of the signal from the active antenna.

author: Halcyon
author_rank: Unknown
timestamp: February 26, 2017, 06:05:55 am
content: Here's one from Australia. I particularly love the bit where he said "I certainly wouldn't be standing here if it was running, unlike those numpty Russians with their plants".https://youtu.be/2MPtdHcm4i8

author: Red Squirrel
author_rank: Super Contributor
timestamp: February 26, 2017, 06:17:31 am
content: Interesting thread. I would have figured that a AM tower being grounded would make it safe to touch and not able to cause burns like that. Is it basically the transmitter coupling with the tower so when you touch it, some induced voltage just takes a different path (you) to ground? I guess when they climb the tower do they have to just jump on the first steps, then they're ok? Or I guess they would shut down the transmitter?

author: Red Squirrel
author_rank: Super Contributor
timestamp: February 26, 2017, 07:22:38 am
content: Hmm would have figured that simply being cemented in the tower would still be a half decent ground. I guess if the cement is dry it basically just acts as an isolator. Probably gets interesting when it rains lol.

author: SeanB
author_rank: Super Contributor
timestamp: February 26, 2017, 11:01:12 am
content: The tower for AM and shortwave is the actual antenna, not something they bolt onto it. Thus they have to isolate it, and there is a buried copper mesh ground plane as big as the tower down there to act as the other half of the dipole antenna. The lighting has an isolation transformer with AM parallel traps to remove the transmit frequency, so they can feed 115VAC or 230VAC at around 10A up the tower for the light feeds.These as you see are in shielded conduits, and the lighting is designed to have long life, easily lasting 10 years between relamping, even with the 300W incandescent lamps they use. Lamps are on 24/7/365, and are run with a current monitor to detect low current from failed lamps, and generally each lamp position has 2 lamps installed for redundancy, except at the topmost position where they often install 4 or more. As it costs a lot of money to both turn the tower off for a day, plus send a tower crew up for a single lamp failure, having multiple lamps pays off, just change all when half are dead, or during regular inspection. LED lamps though are now very common, though the current draw is lower and thus you need to adjust the warning systems, but they still install redundant ones.Want to climb one, just be really fit, not afraid of heights and not get sick from the swinging motions of the tower, even in apparently still air.

author: Marco
author_rank: Super Contributor
timestamp: February 26, 2017, 02:36:35 pm
content: Why use a pole? Can't you just build the cage and inside the cage make part of the ceiling a separate conductor with the modulated voltage? Moves the concentrated part of the electric field out of the way.

author: MrW0lf
author_rank: Frequent Contributor
timestamp: February 26, 2017, 03:33:33 pm
content: Quote from: Halcyon on February 26, 2017, 12:47:26 amSays who? Authors of some other special "debunking study"? In true science noone has final truth. Id say subject is open to discussion as any other. When subject is suddenly "closed" or "debunked" usually there is some "greater interest" at play.I did actual environmental survey when looking for new house. First found suitable place located about 800m from powerlines. But these were two of them located in V shaped manner surrounding property. Recorded general background level about ~80nT of 50Hz AC magnetic field varying quite logically in relation to lines. This was same as in some apartment with totally incompetent electrical installation (lighting phase/neutral in different wires on opposite sides of room). In average apartment with competent install level is 2nT or less. To put things in perspective ~80nT is usually recorded at 50cm distance from working high power electrical appliance (oven, heater etc). Would you live and raise children while basically sitting on top of high power heater all the time? Or hassle with nasty 50Hz background in lab just looking for any conducting object to chew on? Not to mention wideband RF noise flood...BTW I initially discovered that "incompetent electrical install" because got quite nasty electrical shocks from shielded CAT cable just laying on the floor. Measured 60V AC... Dunno what current was, but enough to cause nasty painful "buzz". Essentially apartment was 1 huge transformer loopThink there was large E-field also because measured mag field not enough to cause mess like that.

author: SeanB
author_rank: Super Contributor
timestamp: February 26, 2017, 06:15:14 pm
content: Quote from: Marco on February 26, 2017, 02:36:35 pmHow do you support the cage? Making the tower as part of the antenna saves a lot of money, and you need a support structure in any case.For towers at the base you have a spark gap, so that a lightning hit ( they are excellent lightning rods) is just shunted to ground via the counterpoise, and the transmitter sees the pulse of power, turns the RF power down for a half second and the resumes again, so the station has a tiny blip in sound in a storm, but is still on the air. That is why you have power transmitter valves, they do not mind the 20kv pulse being applied to the anode for a few milliseconds after it has traversed the power filtering and harmonic traps on the output.you oftem also have other services on the same hot tower ( like TV transmitter antennas, FM radio antennas and now cellular stations, and these are simply done by putting all the stuff inside the steel girder stage aside from the antennas, putting in another really big power isolator feed for them and then having the data come up and down using fibre optic cabling, which generally does not mind the RF field much. You just use really well shielded cabinets up there, with it makinbg a Faraday cage inside for the equipment, and the RF on the outer surface does not penetrate, though you really have to make good RF joins at connectors.

author: Halcyon
author_rank: Unknown
timestamp: February 27, 2017, 07:29:33 pm
content: Quote from: MrW0lf on February 26, 2017, 03:33:33 pmI'll let you do some homework, take your pick of any number of Government, university, medical and private organisations all around the world who have conducted very reputable studies (including the Cancer Council in Australia). No one has absolutely ruled it out 100% (just like no one can 100% rule out Jebus/God), but I'll sooner die of old age than cancer "caused by" living in the vicinity of power lines.Quote from: MrW0lf on February 26, 2017, 03:33:33 pmI have absolutely no doubt that your measurements and figures are correct. But so what? You're stating the obvious, yes, there is background electromagnetic noise... and... ? It's like I'm waiting for a punchline to a joke that never arrives.I think you're trying to confuse us with figures in attempt to back up your theory, but all you're doing is quoting numbers. You draw no line between your "survey" and what you're insinuating. I'll throw some figures at you: We had 2.0mm of rain yesterday, my desk lamp has a colour temperature of about 3000K, there is a 80% chance I'm going to have Banh Mi for lunch today and the fuel tank in my car is about 95% full. What does all that mean? Absolutely nothing.Quote from: MrW0lf on February 26, 2017, 03:33:33 pmA high power "heater", no, no I would not. I like things on the cooler side. Power lines on the other hand, apart from the eyesore, I'd have no problems with whatsoever. Pretty much every room of my house, office, lab, the street I walk down every day is buzzing with 50Hz background noise. I think you'll find it hard pressed finding an area that isn't. It has no effect on me or any of the things I do every day.In fact, 50Hz buzzing is responsible for this lovely cup of coffee I just made. "Thank you 50Hz buzzing, I heart you."Honestly, try to use the "scientific method" a little more in your thinking.

author: MrW0lf
author_rank: Frequent Contributor
timestamp: February 27, 2017, 10:25:20 pm
content: Quote from: Halcyon on February 27, 2017, 07:29:33 pmWell technocrats usually do not bother, they just say it "has been debunked somewhere". So I do not bother as well. I just say there are lots of studies confirming that organism with electrical comms system (humans) has limits to its error correcting algorithms and only fool would push them. It a bit like analog TV vs digital. With primitive analog TV you have instant indication of compromised signal. With digital you usually have little or no warning (despite error correcting doing hard work) and then it's all pixels. Sort of like cancer. Due to unique education system where biologist effectively knows nothing about electrical engineering and vice versa it's unlike that complex understanding will arrive soonReminds me of those excellent heat resistant asbestos brake pads, all made to strict regulations

author: Red Squirrel
author_rank: Super Contributor
timestamp: February 28, 2017, 02:25:14 am
content: I grew up with a humming transformer sitting right in my yard. I turned out fine. I think? The voices in my head tell me I'm ok.

author: MrW0lf
author_rank: Frequent Contributor
timestamp: February 28, 2017, 08:31:33 am
content: Quote from: Red Squirrel on February 28, 2017, 02:25:14 amSome like a 3 pints too much and still live to old age. There is no universal truth. My point is mainly that perfect machines do not emit anything if not meant to. All sorts of pollution (including line AC, RF) are result of poor science, design or craftmanship. After not too long search I found entire area in suburbs where there is brand new by-the-book underground electrical distribution and background level almost the same as in sparsely populated countryside. Overall there are 2 approaches to how things should be done, somehow like the latter more1) f*ck nature2) integrate with minimal impact

author: Halcyon
author_rank: Unknown
timestamp: February 28, 2017, 06:57:41 pm
content: Quote from: MrW0lf on February 28, 2017, 08:31:33 amDecades of science has basically come to the conclusion there is little to no evidence that what you're suggesting increases instances of cancer. Like I said, they're not going to come out and say there is absolutely 100% no chance, because that's not how science and biology works.Quote from: MrW0lf on February 28, 2017, 08:31:33 amYou seem to be backpedaling now. I thought the point you were making was electromagnetic radiation from AC power lines and circuits cause cancer and I refer you back to when you said: "it is scientifically proven fact that with nearby high voltage power lines child leukemia rates spike". How you've changed your "point" to something entirely different. Could it perhaps you went into this discussion a little half-cocked?I also can't help but notice your use of the term "(electromagnetic) pollution" which implies some kind of negative health impacts or undesirable effects. It seems to be a buzz-word bandied around by the sorts of people who don't have much of an idea about what they are promoting and want to pump up their argument a bit (like how "dangerous climate change" gets thrown around). For the sake of accuracy, let's call it "electromagnetic energy" or "radiation" because that's what it is; good, bad or indifferent.Anyway, even the finest engineered devices do emit something, but it's not necessarily a bad thing or anything worth worrying about. I'd hardly call that "poor science, design or craftsmanship".I will agree on your point that underground power cabling is much more aesthetically pleasing than overhead wiring.

author: MrW0lf
author_rank: Frequent Contributor
timestamp: February 28, 2017, 08:34:24 pm
content: Quote from: Halcyon on February 28, 2017, 06:57:41 pmTake almost any controversial health subject. Lots of studies either way. Most of the "official" studies say nothing to worry about. Yet they predict 50% cancer rate soon, autism rates soaring also. Hmm...Quote from: Halcyon on February 28, 2017, 06:57:41 pmBecause it's pointless discussion. Doubt anyone gonna change his point of view here or learn something.Quote from: Halcyon on February 28, 2017, 06:57:41 pmWhat use would be to link 10+ studies here? Someone would find 10+ saying opposite.Quote from: Halcyon on February 28, 2017, 06:57:41 pmOk, will give you quote from WHO website, guess it's most they can say without hurting industry too much:"IARC has classified radiofrequency electromagnetic fields as possibly carcinogenic to humans (Group 2B), a category used when a causal association is considered credible, but when chance, bias or confounding cannot be ruled out with reasonable confidence."IMHO quite simple, it means "better safe than sorry". Since it's bad for T&M also, why not "clean up" or pick "clean" environment in that regardQuote from: Halcyon on February 28, 2017, 06:57:41 pmTo me it rather seems most technocrats have no idea how biology works. Many "debunking" studies are plain primitive. Sadly same with biologists. There was some test they looked for powerline related issues based on cows or lambs (do no remember which), not realizing that those are grounded by means of 4 feet and do not develop high "body voltages".So overall - yawn. I have point of view based on my measurements and actual problems and health issues of some people I know (which will not disclose, but these were "wake up call" for me). You have some other point of view because lack of "personal experience". Neither will change. Lets leave it at that.

author: Halcyon
author_rank: Unknown
timestamp: February 28, 2017, 09:22:11 pm
content: Quote from: MrW0lf on February 28, 2017, 08:34:24 pmSo... because "they" predict an increase in cancer/autism rates (and I'd like to see the sources you're quoting here as well, but let's just run with it...), how are you drawing the line between that and HV power lines when the vast majority of evidence and studies says otherwise?Quote from: MrW0lf on February 28, 2017, 08:34:24 pmYes, you're right, and it's a real shame. It is hard to educate some people, mostly because they are unwilling to learn (not because they don't have the capacity to).Quote from: MrW0lf on February 28, 2017, 08:34:24 pmYes, I'm familiar with the paper you're quoting. It specifically relates to the study of wireless devices (such as mobile phones), not extremely low frequency.I refer you to a more relevant document,IARC Monographs Volume 80 - Studies of Cancer in Humanswhich specifically deals with ELF fields. It basically concludes:There is limited evidence in humans for the carcinogenicity of extremely lowfrequency magnetic fields in relation to childhood leukemia. There is inadequate evidence in humans for the carcinogenicity of extremely lowfrequency magnetic fields in relation to all other cancers.I will point out, that "limited" evidence is very limited indeed (it makes for interesting bedtime reading).Quote from: MrW0lf on February 28, 2017, 08:34:24 pmYep, fair enough. You can hold your views and opinions and I wouldn't dream of telling you how to think or that your opinion is invalid. It's just when people come on here spouting "facts" that highly disputed by the scientific community comprised of people smarter than you or I, I get a little annoyed because the average person reading it might get the wrong idea and draw ridiculous conclusions from there.We should be spreading knowledge and encourage learning and challenging ourselves rather than just guessing.

author: MrW0lf
author_rank: Frequent Contributor
timestamp: March 01, 2017, 09:05:19 am
content: Ok, some links to illustrate situation:About soaring autism:Here same stats are linked to glyphosate:http://images.medicaldaily.com/sites/medicaldaily.com/files/styles/embedded_full/public/2015/01/05/autism-prevalenceuse-glyphosate.JPGHere to organic food saleshttps://www.sciencebasedmedicine.org/wp-content/uploads/2014/09/autism-organic2.jpgOnly thing can conclude that autism IS soaring, but is anyones guess why. In such situation makes sense to rely on personal experience and observations.Now back to ELF:Here some dude says link to powerlines exists:http://www.bmj.com/content/330/7503/1290Later same dude says basically no link (after manipulating stats in a bit different way):https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2965853/So againHere some other studies:Ahlbom, Anders; Elisabeth Cardis, Adele Green, Martha Linet, David Savitz, Anthony Swerdlow (December 2001). "Review of the Epidemiologic Literature on EMF and Health". Environ Health Perspect. 109 (S6) - [View abstract]Fews, Peter; Denis Henshaw, Paul Keitch, Julie Close, Richard Wilding (December 1999). "Increased exposure to pollutant aerosols under high voltage power lines". Int J Radiat Biol. 75 (12): 1505-21. - [View Abstract]Fews, Peter; Denis Henshaw, Richard Wilding, Paul Keitch (December 1999). "Corona ions from powerlines and increased exposure to pollutant aerosols". Int J Radiat Biol. 75 (12): 1523-31. - [View Abstract]"SAGE first interim assessment: Power Lines and Property, Wiring in Homes, and Electrical Equipment in Homes" - [Summary plus downloads]Here we finally see some indication of brain activity, for example"Increased exposure to pollutant aerosols under high voltage power lines"Aha! Second order effects! Someone took head out of his ... for a moment...Lets try to go down this path:http://www.sciencealert.com/study-finds-that-chronic-stress-really-does-spread-cancer-in-the-bodyStress... Hmm... Maybe ELF contributes to stress? And stress messes up health?After all man is eletrical machine, if it transmits, maybe shall receive also, and Rx modulates some internal processes?http://www.measurement.sk/2005/S2/Lipkova.pdfBut back to stress:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4256039/"Our data demonstrated that the responses observed in the animals after exposure to the different frequencies of ELFEMF (1 and 5 Hz) may differ according to the frequency, and time of exposure. These data also indicated that one of the most prominent organs which can be activate after field exposure is at least some parts of the brain, which manifested by changes in behavior and hormonal level in the animals. In other word, our data explained the hazardous of the field exposure which can destabilize all body organs by the mechanisms which are not fully understand."And just to spice up:https://www.hindawi.com/journals/bmri/2015/237183/"In conclusion, we demonstrated that 50?Hz ELF-EMF exposure can induce the alterations of genome-wide methylation and the expression of DNMTs. These results suggest that epigenetic regulation might play an important role in the biological effects of 50?Hz ELF-EMF exposure. Although we could not confirm whether the long-term exposure of alternating current does harm to our health based on the present study, we recommend that charge power supply and high voltage wire should be kept as far as possible from our body to reduce the absorption of radiation by cells."So it's all very much open do discussion, nothing is "debunked" and no "final word" is said.

author: Halcyon
author_rank: Unknown
timestamp: March 01, 2017, 07:17:53 pm
content: Now I'm convinced you're just a forum troll or at the very least, cherry picking studies/papers from Google in order to support a weak argument.Most of what you posted has absolutely no relevance to anything being discussed here and I would hardly cite them as reputable sources in any case.Of the two links relating to electromagnetic fields you provided, "some dude" concluded that"We emphasise again the uncertainty about whether this statistical association represents a causal relation."If you actually bothered to read the paper, his findings were purely based on statistics rather than any real evidence, because as you would know from high school science, correlation does not equal causation. It looks like he has slapped it together as part of a university assessment.I'm impressed that you managed to find a government site which "supports" your argument, but again, you didn't read it did you? This study came to the conclusion that the risk of childhood leukaemia was the same in the highest and lowest exposures they looked at but nevertheless"found no statistically significant associations between childhood-cancer risks and estimated magnetic fields from high-voltage power lines near the child's home address at birth"and"made no attempt to estimate magnetic fields from sources other than high-voltage power lines, such as substations, underground cables, distribution or house wiring, or domestic appliances".This source which you're now relying on directly contradicts what you claimed earlier:"However they were puzzled why rates do not vary as square of distance (mag. field), but are linear instead".Furthermore neither study you cited were performed on active participants.As I said before, the general consensus in the scientific and educational communities indicate risk cannot be entirely ruled out and based on current research there is suggestion of a marginal increased risk in children, albeit it seems to be anecdotal. If you had bothered to read any of the source material, you'd come to the same conclusion.You seem to have convinced yourself that there is some elevated risk and however you choose to live your life is fine, wear all the tin foil hats you desire. But if you come on a forum where the member base is largely intelligent, analytical and where many hold some very respectable qualifications, expect to be challenged if you post utter bollocks without any substantiation. Anyway, I've entertained you enough. If you choose not to educate and challenge yourself and your own beliefs, I feel a little sorry for you.

author: MrW0lf
author_rank: Frequent Contributor
timestamp: March 02, 2017, 08:11:58 am
content: Quote from: Halcyon on March 01, 2017, 07:17:53 pmWell obviously you are in "strong position" also and completely ignore studies & stuff that might shed some light into the matter. Technocrats are quite interesting creatures - they are happy to slap on heart rate monitors, EKG stuff, various other electrical sensors. So they have no problem with Tx part of (human) biology. But as soon as talk goes into Rx territory it complete no. Suddenly there are only heat effects possible and aggressive dismissal anything besides "official standpoint" startsSo as you can see we both learned nothing, but bytes were wasted in forum database. So think better to conserve resources and wrap this up...

author: Halcyon
author_rank: Unknown
timestamp: March 02, 2017, 10:40:34 am
content: Yeah I'm not so sure a 1.9KW transmitting pole in the middle of a room is such a great idea, it would taste fuzzy.

author: Marco
author_rank: Super Contributor
timestamp: March 02, 2017, 09:45:33 pm
content: It's presumably not 1.9 kW when it's not intentionally coupling to anything.

author: MrW0lf
author_rank: Frequent Contributor
timestamp: March 03, 2017, 10:09:31 am
content: It will couple to everythingmetallicconductive... But reason for whole concept is difficult to understand. To transmit power for high power appliances it clearly pointless, bacause those are usually fixed in place. But humans go with light. So why not just stick some "solar film" to appliance and absorb needed energy. Potentially it could be transparent so whole screen of devices could absorb energy. Complement with little battery - all done... BUT some military dudes have decided that >20% effective solar is "dual use" tech and probably we wont see this anytime soon... On the lab-test at least 4x better was achieved looong way ago. I can see what their problem with high efficiency solar is - nobody (incl "bad guys") would need infrastructure - no infra => no weak points to attack => no control. But with transparent film based tech even around 20% would yield something usable.