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NEED: Schematics for building a broad band frequency jammer (FM 88M-108M)

Discussion in 'Electronic Basics' started by Nina, Sep 18, 2004.

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  1. Nina

    Nina Guest

    I would like to build a broad band frequency jammer for the FM
    broadcast band. I have neighbors that like to play that damn music too
    loud all day long. I figure if they turn it load and their station
    goes off the air for a while they might get the message. ;-) :-D
    If they keep the volume at a respectful level they will be allowed to
    listen to their music as they wish as long as I don't have to listen
    to it at uncomfortable levels.
    I know this is entirely illegal and don't care about it. This is war
    (!!!)and I plan on winning.
    If you have plans for something that would help me achieve my goal I
    would like to hear of it. My electronics skills are advanced (I've
    used to build and design "bugs" for many years, I own a good equipped
    lab, enough that I could build a project.
    I have some experience with rf broadcast circuits.
    The proximity of the offending radio's location to my house is quite
    near so I don't believe a transmitter with an overly large
    power...something between 3-5W
    will be enough...LOL....
    I'm "jamming" this neighbour with a 5W transmitter, but have to change
    the frequency MANUALLY as soon as he changes the station, so I cannot
    figure out how to do it automatically...
    I'll be VERY THANKFUL for your help and ideas :)
    TIA
    Nina
     
  2. Si Ballenger

    Si Ballenger Guest

    Instead of a "silent" jam, get a radio on the same frequency next
    to your transmitter and transmitt a feedback squeel. This would
    get some attention if they have volume turned up.
     
  3. Sounds like you don't need any help, then.
    Use one of your old FM bugs and adapt to sweep the band with a
    sawtooth generator varying the reverse bias on a suitably chosen
    varactor diode as part of the frequency determining section. Then
    hitch the output of your bug to a couple of additional broad(ish) band
    RF amplification stages which you will no doubt have no problem
    designing. Presumably you know all this, anyway.
    So you want to wipe out the whole of the band to save you the bother
    of retuning? I don't think you've thought this through very well. What
    about everyone else in the neighbourhood who presumably don't annoy
    others with too much volume? They're going to get wiped out, too. 3-5W
    can cause quite a bit of widespread local disruption unless you're in
    a strong signal area.
     
  4. John Fields

    John Fields Guest

     
  5. mike

    mike Guest

    You really haven't thought this through have you.
    Your neighbor isn't doing anything illegal.
    Your plan IS illegal.
    You can EASILY be located by the authorities.
    STIFF fines are involved.
    If you're in the US, all they gotta do is call the FCC
    and you're toast.
    If you're gonna wage war, you should have a winning strategy.
    Your current one ain't!
    mike




    --
    Return address is VALID.
    Wanted, 12.1" LCD for Gateway Solo 5300. Samsung LT121SU-121
    Bunch of stuff For Sale and Wanted at the link below.
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  6. Gregg

    Gregg Guest

    Just use a Ramsay kit, wipe out whole goddam FM band in one go!
     
  7. DaveC

    DaveC Guest

    (Nina) wrote in @posting.google.com:
    Smear some Jam on your speekers and tune in to their frequency. Then pump
    up the volume. Get real fat and stand in frount of the speekers, that's
    your broad band. Or somthing.

    DaveC
     
  8. There is no more valour in you than in a wild duck.
     
  9. Nina

    Nina Guest

    @ Paul Burridge,
    You wrote:
    "Sounds like you don't need any help, then.
    Use one of your old FM bugs and adapt to sweep the band with a
    sawtooth generator varying the reverse bias on a suitably chosen
    varactor diode as part of the frequency determining section. Then
    hitch the output of your bug to a couple of additional broad(ish) band
    RF amplification stages which you will no doubt have no problem
    designing. Presumably you know all this, anyway."

    You are wrong, I do need help...
    Theoretically, I know this very well, I thought to use a varactor
    diode for
    this job, but - and here I need your (or other members)help...
    I don't know how to match making between my old bugs and a varactor
    diode sweeping circuit, and have no idea how to build one.
    I'll be very thankful for help :)
    Nina
     
  10. Nina

    Nina Guest

    OK guys,
    Thanx meantime for your responses.
    Not getting much help...:(
    I know it's illegal, I know it's dangerous, and I know that I can build a
    huge wall between our houses....
    But, I'm still interested to build this device, for reasons that I cannot
    mention here...
    If anyone wants to help me, please do, but I don't like conferences about my
    skills, or legal advices etc.
    TIA to anyone who actually tries to help :)
    NINA
     
  11. This site contains some useful info:

    http://www.electrokits.com/id-fm_jammer.htm

    And try alt.pirate.radio instead of alt.radio.pirate (you won't get
    much help from anyone on the mainstream groups for an illegal aim like
    you've publicised here, I'm afraid).
     
  12. Guest

    try a rotary spark generator..about as cheap as you can get..
     
  13. If I said anything to you that I should be sorry for, I'm glad.
    You're only purpose in life is to serve as a warning to others against the
    dangers of self-lobotomy surgery.
     
  14. John Fields

    John Fields Guest

    ---
    First time around it was to jam a neighbor's loud radio, this time
    around you can't say what it _really_ is.

    First time around you knew it was illegal, this time around you still
    know it, but you don't want to hear about it _and_ you want someone to
    help you even though you've said you know it's illegal?

    You're not the sharpest knife in the drawer, huh, Nina?
     
  15. John Fields

    John Fields Guest

    ---
    You should be sorry you opened your stupid fucking mouth, but as
    starved as you must be for attention, even being shit on would make
    you happy, no?
    ---
    ---
    You might as well try to learn to punctuate, you ignorant ****,
    because if that last sentence is any indication of your capacity for
    wit you'll sure as hell never learn to flame.

    Care to try again?
     
  16. Meat-->Plow

    Meat-->Plow Guest

    PSSST you are arguing with a bot. As in software generated
    posts.
     
  17. Gareth

    Gareth Guest

    Nina,

    I'm not being funny here, but have you tried asking them politely to
    turn their music down? I used to have a similar problem with my
    neighbours, and I found polite requests surprisingly effective. It may
    be worth talking to other neighbours to see if they are also annoyed by
    the load music as, obviously, the more people on your side the more
    likely the noisy neighbours are to realise that they are in the wrong.

    Another thing I would recommend is that you look up the appropriate
    local laws. For example, here it in England it is an offence to cause a
    "statutory noise nuisance", which is defined as any noise which causes
    "unreasonable disturbance to the use and enjoyment of one's property".
    Persistent offenders can be fined up to 5000 UKP (about $9000).

    As others have said, deliberately jamming their radio could get you into
    serious trouble, maybe even a few months in jail.

    Gareth.


    --
     
  18. donnie

    donnie Guest

    ########################
    Duh, what happens if they switch to CDs?
     
  19. Nina

    Nina Guest

    Well...
    Thanx all who tried to help me in any way :)
    The whole "story" is:
    The main problem is the guy I'm dealing with...He is a mentally ill
    guy, that has been freed from a madhouse about 3 month ago. He lives
    in his 14 room yard (yes, he sleeps there too) and has conflicts with
    all authorities, including police. He's arrested from time to time for
    violence against his wife or children or neighbours, but released
    after a few hours, as he is - as I said - insane, and the authorities
    are powerless against him. He is really ill, but not stupid. He lowers
    the volume between 14:00-16:00 and from 00:00 up to 06:00. Lower, not
    closing...
    Our windows are about 10m from his yeard, so you can imagine...
    I've considered all the suggestions some of the members gave, as
    others have said, jamming his radio could get me into serious
    troubles, and changed my "jammer" with a 50-100mW module...It has
    about the same effect.
     
  20. Clarence

    Clarence Guest

    SO, you thing your okay?
     
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