[ARCHIVED THREAD] - Cell Phone Jammer (Page 1 of 2)
You can buy them but they are not legal here in the US. |
You sure about that. Because i know of several movie theatures and a couple restaurants that use them. |
Yes, it is a violation of FCC laws because you are "stealing" frequencies that are legally owned by the cell phone carriers. |
You are right, but think how nice it would be to shut some people up 
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yep, it's against fed law. |
I agree. |
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Something like this? http://www.ladyada.net/make/wavebubble/ I figure that's about $300 worth of parts, plus appropriate soldering equipment, not to mention the soldering skills and a rock-steady hand to put it together. Something like that would be fun to build, but it is illegal. And I sure as hell aint gonna put my ham license at risk just for some immature pranks... |
Cheaper to buy. |
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My opinion on this, is that you should be allowed to have and use these, limited to your OWN property. If you are a business then you should have to have a sign up, just like the no CCW signs. The signal blocking should be limited to your property line. You never know what type of communications people could be depending on. Its not going to be funny when someone cannot make or recieve an emergency phone call because of this. At first I thought this sounded funny. My second thought was the use of these devices in home invasions. My third thought was the first person who doesn't get the phone call in time to be at their dying family members bedside because some asshole thought he should block cellphones in his restaurant. I don't think they should be illegal. I think you should be able to use them on your own property. But I think you should be restricted to using them on YOUR property, and you should be required to inform people that you are blocking their cell phone signal. eta: and I want one.
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Yeah I found that site as well. As a ham radio operator myself I found the device intriguing. But not worth it. |
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I like this line from the article. Does two wrong really make a right ?
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USA: Illegal to operate, manufacture, import, or offer for sale, including advertising (Communications Act of 1934)[5], with fines of up to $11,000 and imprisonment of up to one year. en.wikipedia.org/wiki/Cell_phone_jammer Even though they are illegal in the states, something like that would be good to have while I'm over here. |
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Cellphone vigilantes try signal disobedience By Matt Richtel Published: November 4, 2007 SAN FRANCISCO: One afternoon in early September, an architect boarded his commuter train and became a cellphone vigilante. He sat down next to a 20-something woman who he said was "blabbing away" into her phone. "She was using the word 'like' all the time," said the architect, Andrew, who declined to give his last name because what he did next was illegal. Andrew reached into his shirt pocket and pushed a button on a black device the size of a cigarette pack. It sent out a powerful radio signal that cut off the chatterer's cellphone transmission - and any others in a 30-foot, or 9-meter, radius. "She kept talking into her phone for about 30 seconds before she realized there was no one listening on the other end," he said. His reaction when he first discovered he could wield such power? "Oh, holy moley! Deliverance." As cellphone use has skyrocketed, making it hard to avoid hearing half a conversation in many public places, a small but growing band of rebels is turning to a blunt countermeasure: the cellphone jammer, a gadget that renders nearby mobile devices impotent. The technology is not new, but overseas exporters of jammers say demand is rising and they are sending hundreds of them a month into the United States - prompting scrutiny from federal regulators and new concern this week from the cellphone industry. The buyers include owners of cafés and hair salons, hoteliers, public speakers, theater operators, bus drivers and, increasingly, commuters on public transportation. The development is creating a battle for control of the airspace within earshot. And the damage is collateral. Insensitive talkers impose their racket on the defenseless, while jammers punish not just the offender, but also more discreet chatterers. "If anything characterizes the 21st century, it's our inability to restrain ourselves for the benefit of other people," said James Katz, director of the Center for Mobile Communication Studies at Rutgers University. "The cellphone talker thinks his rights go above that of people around him, and the jammer thinks his are the more important rights." The jamming technology works by sending out a radio signal so powerful that phones are overwhelmed and cannot communicate with cell towers. The range varies from several feet to several yards, and the devices cost from $50 to several hundred dollars. Larger models can be left on to create a no-call zone. Using the jammers is illegal in the United States. The radio frequencies used by cellphone carriers are protected, just like those used by television and radio broadcasters. The Federal Communication Commission says people who use cellphone jammers could be fined up to $11,000 for a first offense. Its enforcement bureau has prosecuted a handful of American companies for distributing the gadgets - and it also pursues their users.  Investigators from the FCC and Verizon Wireless visited an upscale restaurant in Maryland over the last year, the restaurant owner said. The owner, who declined to be named, said he bought a powerful jammer for $1,000 because he was tired of his employees focusing on their phones rather than customers. "I told them: put away your phones, put away your phones, put away your phones," he explained. They ignored him. The owner said the FCC investigator hung around for a week, using special equipment designed to detect jammers. But the owner had turned his off. U.S. cellphone carriers pay tens of billions of dollars to lease frequencies from the government with an understanding that others will not interfere with their signals. And there are other costs on top of that. Verizon Wireless, for example, spends $6.5 billion a year to build and maintain its network. "It's counterintuitive that when the demand is clear and strong from wireless consumers for improved cell coverage, that these kinds of devices are finding a market," said Jeffrey Nelson, a Verizon spokesman. The carriers also raise a public safety issue: jammers could stop people from communicating in an emergency. In evidence of the intensifying debate over the devices, CTIA, the main cellular phone industry association, asked the FCC on Friday to maintain the illegality of jamming and to continue to pursue violators. It said the move was a response to requests by two companies for permission to use jammers in specific situations, like in jails. Individuals using jammers express some guilt about their sabotage, but some clearly have a prankster side, along with some mean-spirited cellphone schadenfreude. "Just watching those dumb teens at the mall get their calls dropped is worth it," the purchaser of a jammer wrote last month in a review on a Web site called DealExtreme. "Can you hear me now? NO! Good." |
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I've had a thought about a narrow beam, capacitance discharge EMP transmitter so I could fry the circuits of the cell phones of people yakking while driving. The thought came to me while riding my motorcycle after the umpteenth time someone almost killed me using their cell while driving.
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You "duped" both of them genius, even though this one was first. Where's my dupe jammer... |
 
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I'm intrigued by this "right" to be informed via cell phone. Apparently you can only request people turn them off. A friend who teaches math in JC says that's her single biggest issue, cheating via cell phone. I'm not sure any school has been successful banning cell phone use. It's become an entitlement of sorts, to be able to talk or receive a call ostensibly based on emergency issues.....excuse me while I call my lawyer...he says "up yours" teach. 
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You mean Faraday cage? Jacob's ladder is the "V" thing with electricity arcing across it and moving upward. They're commonly seen in old black and white horror movies. A Faraday cage is also legal. You can legally harden your structure to prevent the transmission of signals, but you can't transmit a signal to block a signal. You'd think the opposite would be true. In the event of a fire or medical emergency you can turn off the jammer. You can't turn off a hardened structure. |
First, I would've told the Verizon guy to get off my property. I would like to tell the FCC guy to get gone too, but he's a Fed and they don't just go away. It seems as if now is the time for the special interest groups to contact the lawmakers to pass laws to override Verizon's special interest group. Also, I'd fire the employees who didn't listen when I told them to hang up. There'd be a standing order to turn cell phones off (not even vibrate) and that anyone caught so much as looking at their phone on my time would have to leave it at home from then on out or be fired on the spot. Lord, what did people do before cell phones? Is knowing you need to get milk on the way home or gossiping about your roommate's boyfriend really that important? STFU and get to work! |
One thing's for sure, I don't want somebody named "Jellybelly" making decisions about when I talk and to whom! 
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Nope... but look for my forthcoming VeMoRaSeM (Vehicle Mounted Rap Seeking Missle). I'm still working out the bugs now. Hard to discriminate between Rap/Hip-Hop, and the less offensive Techno/Dance beats... (But then again, do I need to worry about that?). |
What does the yummy and delicious candy have to do with telecommunications?
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if one where to have such a device, and only if, well, it would be just plain wrong to sporadically turn it on and off in the mall while sitting between a bunch of cell phone kiosks. it would be especially wrong to enjoy watching the sales drones try and demonstrate the sound quality of thier phones. I of course don't have one of the devices. |
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wow.. only 48 bucks.. delivered.. www.dealextreme.com/details.dx/sku.4355  |
You mean I should listen to assholes yell idiotic drivel into their cell phone every single time I get on the train, just because one of the shitbirds might have an emergency at some point? What did people do before they had cell phones? How were these dire emergencies handled? I just wish there was a device that would electrocute the cellphone users. I'd pay $10,000 for that. |
here ya go .. and from what I hear you can also get them in their own home.. while they are sleeping.. cant beat that ..  
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I want some kind of 'gizmo' that will 'cook' those boomblasters on wheels that roll through my neighborhood. I'd pay big bucks for something like that!!!! I could sit in front of my house drinking beer and zapping anyone 'blasting' down the street. Now THAT would be pure entertainment.... ETA: I just read the first two pages and find that I'm not alone in my thinking, one would think those rolling boomboxes would be illegal or something.... 
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There are several models... however they require (among other things) an extensive background check, a long waiting period and a $200 tax. |
Nice
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A resturant owner asked my how to stop cell phones and I suggested this. He was in a steel building with steel siding, steel roof, but large plate glass windows. I suggested metal mesh curtains covering the windows that might block the signals. He wanted an electrical device that would just jam them. I informed him it was techinically possible, but very illegal. He was willing to spend the money on a jammer, but not to shield the room. |
a side effect of a Faradays cage is that if there are any transmissions inside the cage, it effectively becomes a microwave oven. |
True but... Inverse square law. Power of cellphone vs volume of resturant = negligable effect. You'd need a very powerfull emitter to have an effect in large room. |
everyone carries a cell phone. When there is no tower available, they transmit a signal every few seconds to seek out a tower for roaming. I think 50 cells pulsing in a small dining area would be significant. |
transmits broadband noise. Think of it like pointing a flashlight at the sun. (the cell being the flashlight, the sun being the Jacobs ladder.) It will drown out everything, TV, radio... |