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Circuit Diagram for Phone Jammer - RF Cafe Forums

The original RF Cafe Forums were shut down in late 2012 due to maintenance issues. Original posts:

Amateur Radio | Antennas | Circuits & Components | Systems | Test & Measurement


shidah
Post subject: circuit diagram for phone jammer Posted: Mon Jul 18, 2005 12:44 am

Lieutenant

Joined: Mon Jul 18, 2005 12:29 am
Posts: 2
i'm doing a research on how to build a phone jammer. i'm trying to find the circuit or the schematic diagram for the jammer. but, i couldnt find it. can anyone help me?


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Guest
Post subject: Posted: Mon Jul 18, 2005 9:59 am
NO!!!!


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Guest
Post subject: Posted: Mon Jul 18, 2005 12:58 pm
Attention all drones:

I am broadcasting jamming circuit search deactivation code :

biiip .... 4-G-E-T-I-T ... biiip.

You may now go back to you main programmed tasks.


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kpainter
Post subject: Posted: Mon Jul 18, 2005 1:00 pm

Colonel


Joined: Wed Aug 20, 2003 11:47 am
Posts: 47
Location: Santa Barbara, CA
What is with all these guys (from India?) wanting to jam cellphones? Whats up with that? Seems kinda strange.


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Guest
Post subject: Cell Phone JammerPosted: Mon Jul 18, 2005 6:47 pm
Many of us who read and respond to these forums work in the communications industry. We've invested time and effort in order to make universal communications possible and affordable. We believe that communications makes understanding between individuals and cultures better.

Now you want someone to provide a circuit to negate all that work.

If you are indeed a student, you need to tell your professor that jammers are antisocial and unethical.

Please choose another project.


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Guest
Post subject: Posted: Thu Aug 11, 2005 8:17 am
I beg to differ. I work in the hospitality industry and i find mobile phones a pest. The are loud noisey one way conversations, not to mention the potential ramifications of using them while driving a car. Phone jammers have become a neccacary part of life. If ppl could use the phones in the correct way, and not annoy others, then it would not be an issue. what happended to the old days when you could eat in peace or watch a movie without some obsurd ring tone blaring out. you may work in the communication industry, but try looking outside your own self centered egotistical view of mobile phones. They are good and very helpful, but have become an ever annoying part of society... i say jammers for all... If you cant turn your pyhone off in a plane/cinema/hospital/restaraunt/church etc..., you dont deserve to own it!


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Guest
Post subject: Cell phone JammingPosted: Thu Aug 11, 2005 5:25 pm
If you are annoyed by someone's improper use of a cell phone, *ASK THEM TO STOP*!

Oh, you're too shy/scared/inarticulate to do it, and must resort to jamming not only the person with the cell phone, but others nearby? Sorry, that's cowardly.

But direct contact is the only way that people will learn about the bothersome nature of their activities.

Or perhaps they're PAYING GUESTS who are annoying you as an employee, but your management says not to bother them. In that case, you need to decide if paying guests make your life supplying those guests with services so miserable that you should change jobs?

What is "necessary"? Do annoying conversations rise to the level of endangering persons or property? Jamming can stop or delay contact with emergency personnel - and that does endanger persons or property.

I don't idolize misusers of cellphones - indeed, I don't own one, and have never worked for a cellular company. But cell phones indisputedly improve public safety. "Jammers for all" - you would claim for yourself the unilateral right to halt others' communications, even without talking with them directly. Nope, still doesn't fly: the attitude that you can affect other people with impunity by jamming is at least as arrogant as that of the users who affect you with impunity.

Do it the right way - talk with those who offend you. Your problem is a human relationships problem, not a technical one.


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guest
Post subject: Posted: Wed Aug 17, 2005 12:56 pm
Obviously neither side has completely considered the opposite opinion.
For those opposed to cell jammers, concider this. A study found that about half of all middle school students make a habit of carrying on conversations in class. Someone mentioned that it should be as simple as asking them to stop. Wrong. In this case it is not an option. Due to Columbine no teacher is allowed to even ask a student to turn off a cell phone. The reason being, in the case of an emergency, it would be necessary to use it. This is perfectly acceptible. However, what if it were possible to temporarily susspend a conversation. The key term is temporarily.
For those in favor of cell jammers, concider this. The cell phone industry is a multi million dollar industry. We live in a capitalist society, and while cell phones are becoming increasingly annoying and dangerous, it is not possible to simply limit that industry.


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Guest
Post subject: Posted: Wed Aug 17, 2005 1:27 pm
oh shut up


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guest
Post subject: Posted: Wed Aug 17, 2005 2:50 pm
Once again, another individual incapable of supporting an opinion and equally incapable of seeing a different viewpoint. Try showing support for your ideas.


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Guest
Post subject: Posted: Wed Aug 17, 2005 3:25 pm
oh shut up


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SPLGuy
Post subject: Posted: Thu Aug 25, 2005 10:04 am
At my daughter's graduation ceremony there was a guy yakking to his friend on a cell phone near us. My wife asked him to please move away and he told her to go somewhere else. Then I stepped in and told him to turn the thing off and show some respect. He got in my face and told me to shut the f*** up......then he shoved me, so I punched him in the face several times..........
I WILL NOT TOLERATE THAT KIND OF RUDE BEHAVIOR....so I am going to buy a cell phone jammer.......until these people learn some common courtesy.....not very popular these days, I know. If you can't behave like civilized people, you forfiet your right to use a cell phone.
I don't know what to call this guy in PC-speak, but he was a Puerto Rican..............thanks to the multiculturalists for forcing us to accept all aspects, good or bad, of other cultures; a fast-track to making the USA a third-world country.


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Guest
Post subject: Posted: Thu Aug 25, 2005 11:44 am
I suggest to kill this subject as the core discussion is drifting from purely technical


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Guest
Post subject: Posted: Thu Aug 25, 2005 11:59 am
Damn Puerto Ricans with there cell phones and low riders! I think we shoud all punch them in the face several times.


SPLGuy wrote:
At my daughter's graduation ceremony there was a guy yakking to his friend on a cell phone near us. My wife asked him to please move away and he told her to go somewhere else. Then I stepped in and told him to turn the thing off and show some respect. He got in my face and told me to shut the f*** up......then he shoved me, so I punched him in the face several times..........
I WILL NOT TOLERATE THAT KIND OF RUDE BEHAVIOR....so I am going to buy a cell phone jammer.......until these people learn some common courtesy.....not very popular these days, I know. If you can't behave like civilized people, you forfiet your right to use a cell phone.
I don't know what to call this guy in PC-speak, but he was a Puerto Rican..............thanks to the multiculturalists for forcing us to accept all aspects, good or bad, of other cultures; a fast-track to making the USA a third-world country.


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Guest
Post subject: Posted: Fri Aug 26, 2005 11:34 am
Welcome to your new world. I hope you like what you get. Rudeness, no respect, dismantling of the english language.........why have an American culture when you can have a multi-culture right?
Damn Americans with their civility and their soap....we'll show them...


[quote="Anonymous"]Damn Puerto Ricans with there cell phones and low riders! I think we shoud all punch them in the face several times.


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Ham radio
Post subject: Think wide !!Posted: Fri Aug 26, 2005 1:30 pm
Hi folk,

please think wide , open your mind.
A lot of terroristic attacks are performed with explosives triggered by cellular phones. A cell jammer will put you on safe side because nothing will be possible to trigger anylonger....

I have made 3 of them and they work fine within 30 to 50 meters.


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Guest
Post subject: Posted: Fri Aug 26, 2005 1:51 pm
Anonymous wrote:
I suggest to kill this subject as the core discussion is drifting from purely technical


It all started with a simple (technical) request for a cell phone jammer circuit.....then the obnoxious political debate began.......


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RF AZN
Post subject: Cellular JammingPosted: Fri Sep 02, 2005 3:26 pm
Here's an interesting article from IEEE Spectrum, http://www.spectrum.ieee.org/WEBONLY/re ... 5nmit.html, a student from MIT has based her thesis on jamming cell phones because of annoyance, it's more or less social commentary with an engineering twist.


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angie12
Post subject: Posted: Sat Sep 03, 2005 2:19 pm
This place's sucks go to http://www.edaboard.com and everyone there would help.


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Toff
Post subject: Posted: Tue Sep 06, 2005 7:45 am
Jamming mobile phones is standard practice in the UK following terrorist attacks. Its also commonplace in secure areas such as prisons, government buildings and in places of worship.

Jammers are required in these cases to prevent loss of data or simply because the underclass do not know when mobile phones are inappropriate (e.g. in a Church).

Some health clubs and so on use them also.

And because the underclass tend to react violently to requests to speak more quietly (they all shout, presumably from years of shouting to get their views across), its best to resort to subterfuge. Its not cowardly at all. People get stabbed and shot for this kind of thing all the time.


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Guest
Post subject: Posted: Tue Sep 06, 2005 8:03 am
You can buy yhem pre-made on many web-sites. Noone here knows how to make one so you are wasting your time. Just search for phone jammer on google. Around 200-400 USD depending on the power.


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Guest
Post subject: Posted: Tue Sep 06, 2005 4:21 pm
I think that everybody that has posted negatively on this thread knows how do to a jammer.

There are two issues here:

Some do not like the idea of jammer being developped for general use, and therefore are unwilling to contribute.

Some do not like the attitude of people comming and asking for complete design schematic without even contributing to the discussion, specificly when the request comes from students, in which situation doing such a project would be considered as cheating and deserve the absolute zero as a mark.


I am from the second group, and therefore even if I can see some ways to perform this task (probably not the cheapest one), I will stay mute.


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Viktor
Post subject: Phone JammersPosted: Fri Sep 09, 2005 11:19 pm
I believe that loyal citizens should have the tools necessary to protect themselves from annoying people in public. I searched for jammers and found some here for only $259: http://www.techgadgetz.com/products.htm . I'm buying one. Cheers



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