|
Checkout this cell Jammer or we can say Dirty transmitter. A Dirty transmitter transmits junk within the cellular phone bands. This model is good enough to knock out pesky cell phones for about 10 to 15 feet, just perfect for a quite cup of coffee in your favorite coffee shop. Via : EEweb “The 555 timer [8 pin] IC simply makes a noise. It’s coupled via C4 [electrolytic] to modulate the MRF transistor oscillator. With C1 set at roughly 1/3rd, you will be close to 900 MHz. By sweeping the C1 trimmer capacitor, you can swing the output frequency from 800 MHz to 2 GHz with the transistor and values shown.”
|
Image mg mg red 500 mg red of 750 keflex medication .
Learn help prevent asthma information asthma and canadian pharmacy reviews .
Canada is online drug store quality cheap with.
|
| ||||||
|
February 3rd, 2012
Mind, using this would be illegal in a lot of places.
Also you still have a santa hat on your banner.
February 3rd, 2012
Not cool!
People can be waiting for a very important phone call (Doctors catching a bite to eat before the hospital calls them in to surgery…) You could really mess up some peoples lives selfishly using this device.
February 4th, 2012
Be very careful where this is used, here in Canada using or even building to experiment jamming devices is a criminal offence with severe penalties.
Refer to sections 4 and 9 from the Radiocommunication Act.
February 4th, 2012
It’s not legal here, but people with cellulars talking everywhere disturbing other ppl, in public transport, coffe shops, or other areas.. when they have reserved areas for that.. should be illegal too. So, welcome!!
February 4th, 2012
Very cool!
Any surgeon who is in an emergency situation shouldn’t be so stupid as to be away from the hospital too far for too long.
February 4th, 2012
I disagree with the idea of constantly jamming cellphones because you’re /unhappy/ that some idiot is yelling at his phone and thereby potentially endanger others.
….but I can’t really disagree with it if its used to kick him off his call. But only in short pulses.
February 5th, 2012
I could see this being used to jam channels used by other carriers to influence one telcos network. Knock out a few bands and keep one open that you own and you can demonstrate how much better your network is than your competitors.
February 5th, 2012
Is it illegal to own a jammer or is just the actual act of jamming illegal?
And there is a huge difference here…eg. It’s illegal to shoot people with a gun but owning a gun is not illegal
February 5th, 2012
10 to 15 feet is actually only just barely practical – you’d have to pick a table right next to the person yelling at his/her phone. Also, if you don’t manage to kill the call completely, you’re probably only going to make matters worse – he/she’s going to scream even louder – natural human response to a bad quality connection. I also think that using the jammer for such simple purpose as to get a quiet minute at a coffee shop is not justified and can backfire in many different ways…
February 6th, 2012
Don’t you see these things in serial killer movies? Or used by bad guys for whatever evil purposes they have in mind?
February 6th, 2012
Some notes:
- it is illegal to use or sell these in the US. There are some allowances for their creation and testing (see Lady Ada’s Wave Bubble for an example of one built for a thesis project: http://www.ladyada.net/make/wavebubble/)
- directionality of the antenna could extend range (conversely, omnidirectionality decreases range) while targeting specific offenders
- Since this is a jammer, running this for a short time (e.g. 30 seconds) will cause the call to drop; no need to jam unoffending people. Social conditioning will take care of the rest: if annoying person drops or keeps dropping calls, they will leave the area in search of good signal.
- Ideally this is used in response to a single person polluting the public space. To simply turn this on and leave it on is as much a violation of everyone’s public space as if you were loudly talking on your phone
- While illegal, it is doubtful that you will be detected. If you are, though, (or detained because you are pointing strange devices at people and the device investigated), the fines are quite large.
- Finally, social hacks are often still most effective in social situations. Simply asking the annoying person first to take their conversation elsewhere is often as effective or moreso than operating an illegal homebrew device.
February 6th, 2012
I can think of one circumstance where this would be a kindness – on public transit. Just the thing to squelch the angry loud woman three rows back who is MF’ing her boyfriend up one side and down the other, with no concern for the 20 people within the kill radius who are just trying to endure the ride home.
February 7th, 2012
[...] Simple Cell Jammer [...]
February 7th, 2012
I have my own cell phone jammer. I go sit down at the table where the caller is talking and act like I’m really trying to listen in. When they make a ugly face and say “do you mind giving me some privacy”. I simply reply “yes I do, becuase you are in PUB-LicK. (public)
March 30th, 2012
The process does not work