I saw a video on Youtube of one of these but I don't see any actual uses for it. Opinions pls
Depends on the power supply and antenna size. Also, how susceptible the equipment you're trying to jam is. Typically, the smaller and more complex the componentry, the easier to jam.
You need insane power levels and enormous capacitors to do anything noteworthy.There are no portable EMP devices. I once saw a military designed device that was the size of a mobile home.
if your university is in the US then someone or some institution is violating some extremely serious federal laws. call the police if you really think someone's using a jammer.
jammers don't just block people from snapchatting each other; they also prevent people from calling the police, ambulance, and fire department in an emergency, and signal jammers generally block emergency personnel from using their own comm tech when they're on the scene. it's the kind of thing that can turn a bad situation like a heart attack into a catastrophe as people panic.
and no, the fact that lots of rooms have landlines in them doesn't mitigate the crime if you're caught using it. the FCC doesn't slap people on the wrist for fucking with this. if you think the punishments people have faced for innocently aiming lasers at the sky have been extreme, wait till you get caught for jamming cell phones.
Now I'm curious
What can be expected for such a crime? A felony?
Think some dude had a powerful jammer in his car.
He didn't like drivers talking on the phone when driving next to him.
He drove around for two years with it.
He was fined $200,000....
>He drove around for two years with it.
So it's actually really hard for them to get you unless you're a retard that uses an illegal device every day on his route to work/home for two years straight.
You know how they catch serial rapists and murderers? They simply plot the crime locations and create a map of possible address of the perpetrator, since it's most likely he lives/works nearby. Then they check for people with violent crime records that match the area. People don't know how to keep a low profile and by the time they want to get serious it's already too late.
A jammer works by sending out garbage at the frequency you want to jam so that it drowns out the signal. A radio signal decreases in strength as distance increases.
Walk around with a receiver measuring the jamming signal strength, do your game of hot and cold to find the jammer.
The "biggest possible fine" that the FCC did against a guy jamming cell phone signals for years was $48,000.
>what's their use
None unless you're law enforcement
I knew a guy who bought one from china. Had shit range, only caused static to a phone call, and he thought he was the coolest fucker to live. They're useless to citizens.
Blocking people from calling emergency services is a serious crime. If you're a faggot who only thinks of rape, murder, and "legit terrorism" (whatever the fuck your addled brain thinks that means) as worthy reasons to call the police (and quick tip: the last case would get bumped up to federal law enforcement right away anyway), then you're just a retarded faggot who doesn't understand what the police are there ostensibly to do.
The Communications Act says it can carry a fine of up to $112k and/or up to one year. If someone feels like charging you under the Homeland Security Act (which I would expect, if you were found to be using it in the vicinity of any government buildings), then you may get charged under that.
If you're not a photogenic rich kid like that affluenza teen, you'd probably get cast as a misfit domestic terrorism case like that Sandy Hook kid. The public would readily eat you up and pat themselves on the back after sending you to a prison for a very long time.
Okay, to clear things up, EMP and signal jammers are two completely different things, emp sends out a powerful pulse of electromagnetism or whatever, which just makes your shit straight up not work, disables pretty much any device you can think, signal jammers just send out trash signal, and you can beat one by having a more powerful signal.
Rebar in cement can act as a Faraday cage (more effective if connected and grounded, but even without that).
Quick wall is folded sheet metal studs, used in modern construction. Because it's quick and easy. This also acts as a Faraday cage.
College campuses have a very high density of device users, and often a very limited amount of space for commercial cell providers, so the cellular network can easily get saturated. For days when lots of extra people come to campus, they get extra cell towers to help with the extra demand. Pic related.
So you're right. There probably is about service on you're campus, but it's not jammers.
>If you're not a photogenic rich kid like that affluenza teen
Not that guy but you didn't actually read the article, did you? The guy was sixty years old. The FCC report is linked in the article. It also states the maximum. Here, let me spoonfeed you so you don't embarrass yourself with more ridiculous claims.
>Due to the nature and extended duration of Mr. Humphreys’ violations, we take an aggressive approach
and propose the per violation statutory maximum of $16,000 for each of the offenses—unauthorized
operation, use of an illegal device, and causing intentional interference.
in my country with this, I expect FCC have something similar (or better)
>Walking into one was like switching fight mode on
>like switching fight mode on
I'm starting to think the same thing. I'm trying to figure out what an EMP jammer is. I know an EMP is supposed to be a large EM signal that induces a destructive voltage to sensitive electronics and causes them stop functioning permanently.
I know a jammer transmits a RF signal that raises the signal to noise ratio of the channel a receiver is using to make it unusable temporarily.
I can't figure out what an EMP jammer is though.
If you're referring to a radio jammer then they're illegal or practically illegal in most developed countries.
You need to understand the implications of blocking cell signals. If you use one right you could, for example jam the signal going to a cash in transit van, house alarms are possible to block too. there are thousands of industrial applications for cell transmitters that you can go and fuck with
because terrorists typically blow themselves and don't think about anything after that.
>An event last year at Newark Liberty International Airport in New Jersey showed that it only takes one jammer to cause disruption. Airport controllers had installed a new GPS-based landing system, so that aircraft could approach in bad visibility. But it was shutting itself down once or twice a day. It took several months to find the culprit: a driver on the nearby New Jersey Turnpike using a portable GPS jammer to avoid paying the highway toll. This trucker was cruising past twice a day, crippling an airport as he went.
use it often enough/disrupt something important and you will be caught.
How long before every police car also has equipment to track where this jamming signal is coming from ?
FCC has sophisticated tools for tracking down interference and can be surprisingly effective..
I work for a TV station and one of our repeater sites was getting interference on our designated microwave spectrum.
We suspected interference from a nearby site, earlier but the head engineer had ensured they were operating on their own channels.
After spending hours working on this problem we called the FCC and agents were there within an hour with equipment tracking the signals back to the site we expected. A knock on the door and they were ordered to turn off their equipment causing the interference or face fines.
TLDR; kind of cool when the government works in your favor.
Or better yet make one broadcast REEEEE at full blast on all frequencies scanning back and forth randomly so people will be watching or listening to something and they'll get a random REEEEEE.