HiFi Jammer
Paul Farrugia
I am having trouble with neighbours who do not wish to lower the base of
the hifi no matter what time of night it is.
Does anyone know of a circuit that can be used to jam or at least inject
noise into the system. Being a terraced property there is only 9 inch
brick us.
All I want an uninterrupted nights sleep.
Any help appreciated.
Paul
dirk
Walter Gray wrote:
> :>Does anyone know of a circuit that can be used to jam or at least inject
> :>noise into the system.
> What about a UHF transmitter of a few watts? If even one
> milliwatt leaked into the preamp via the mains cables that
> should jam it pretty well, I would have thought.
>
> Walter
Yeah, I kinda agree. My roomate used to have a cb (27.xxx mhz isn't
uhf, but just about anything AM should do) hooked up to a pretty crappy
antenna in the attic. It would cause static on our tv (cable, no
official antenna), on our phone, and also through the stereo. This
would do the trick for you, but you have to remember that it would have
the same effect on your own stuff and for other neighbors too.
Basically you would need the worst radio you could find, with the most
spurious harmonics and highest modulation.
Damn, shoot me. I hear radios like this every day and wish they would
explode, taking their owners with them (or maybe just a limb or two). I
don't like recommending them.
But otherwise, I'd have to agree with an earlier poster and see if you
can get the police or building owner involved. They have the authority
to fine or penalize the people, not just play tricks on them.
And finally, if none of this works, you can either:
1.fill a big garbage can with water, lean it against their door, knock,
then run off.
2. put nair (or any other chemical based hair remover) on their dog
3. Put an ad in the local newspaper saying that their having a huge
garage sale (many antique items, too much furniture and elecronics to
list!) starting at 7 am saturday, early arrivals no problem.
Note, you really shouldn't do these, you should just _think_ about doing
them, and then smile smugly because you know you can always do it to
them later...
Good luck.
Roy McCammon
Michael Bruss wrote:
>
> Paul Farrugia (paul.f...@virgin.net) wrote:
> : I am having trouble with neighbours who do not wish to lower the base of
> : the hifi no matter what time of night it is.
> : noise into the system. Being a terraced property there is only 9 inch
> : brick us.
> : All I want an uninterrupted nights sleep.
> : Any help appreciated.
> : Paul
>
> in the U.S. A directional microphone or several are placed between you
> and the noise source. The mic runs to a sophisticated amp and controller
> which re-emits the noise out of phase from a speaker system behind the
> mics and directed toward the noise source, i.e. the mic is between the
> noise producing speakers and the noise nullifying speakers. With some
> tinkering, the system is fairly effective against sound transmitted
> through the air from a point source. In a situation where the sound is
> being transmitted through building structural components and is emerging
> into your living space from multiple directions, it will probably be
> ineffective.
Put your money into high efficiency PA speakers, a high power
amp, a microphone, and scream at the rascals. Dollar for dollar
you should be able to produce more acoustic power. But
refrain from abusive, threatening, or profain language.
Opinions expressed herein are my own and may not represent those of my employer.
Dan Schultz
In article <33E95C...@virgin.net> Paul Farrugia
<paul.f...@virgin.net> writes:
> >I am having trouble with neighbours who do not wish to lower the base of
> >the hifi no matter what time of night it is.
> >Does anyone know of a circuit that can be used to jam or at least inject
> >noise into the system. Being a terraced property there is only 9 inch
> >brick us.
> >All I want an uninterrupted nights sleep.
> >Any help appreciated.
> >Paul
>
Does the building have circuit breaker boxes in the basement? Go
downstairs and
pull their main power switch, if you can gain access to it. Worked for
me once
during my college years, the night before a big final exam........
Dan Schultz
Alan Cooney
: Paul Farrugia (paul.f...@virgin.net) wrote:
: : I am having trouble with neighbours who do not wish to lower the base of
: : Does anyone know of a circuit that can be used to jam or at least inject
: : noise into the system. Being a terraced property there is only 9 inch
: : brick us.
: : All I want an uninterrupted nights sleep.
When I was living in a dorm in college, the guys in the room next to me
liked to play *very* loud country music. I liked to chat on my 2M ham
rig. Too bad for them that the 2M rig completely muted their stereo.
Of course, it could have had something to do with the fact that I had
my antenna in my closet, right behind their stereo on the other side of
the wall, and that I was running around 100W... :) Funny that I usually
had a tremendous urge to chat on the radio whenever I heard country music
played too loudly. To this day, I unconsciously reach for the mic whenever
I hear loud music. :)
Cheers,
Alan
Michael Bruss
Paul Farrugia (paul.f...@virgin.net) wrote:
: I am having trouble with neighbours who do not wish to lower the base of
: the hifi no matter what time of night it is.
: Does anyone know of a circuit that can be used to jam or at least inject
: noise into the system. Being a terraced property there is only 9 inch
: brick us.
: All I want an uninterrupted nights sleep.
: Paul
There is a noise nullification scheme that is being tried experimentally
in the U.S. A directional microphone or several are placed between you
and the noise source. The mic runs to a sophisticated amp and controller
which re-emits the noise out of phase from a speaker system behind the
mics and directed toward the noise source, i.e. the mic is between the
noise producing speakers and the noise nullifying speakers. With some
tinkering, the system is fairly effective against sound transmitted
through the air from a point source. In a situation where the sound is
being transmitted through building structural components and is emerging
into your living space from multiple directions, it will probably be
ineffective.
Mike
Nicholas Bodley
On Thu, 7 Aug 1997, Mike Pisio wrote:
}Paul Farrugia wrote:
}
}> I am having trouble with neighbours who do not wish to lower the base
{Snips}
} If they are in the next apartment/duplex to you, just get ahold of a
}VHF transmitter, and key the thing. It makes a god-awful noise on their
}system.
...and connect the audio input of the transmitter to a microphone with
good low-frequency response... All this might not be strictly legal, you
know, but...
|* Nicholas Bodley *|* Electronic Technician {*} Autodidact & Polymath
|* Waltham, Mass. *|* -----------------------------------------------
|* nbo...@tiac.net *|* When the year 2000 begins, we'll celebrate
|* Amateur musician *|* the 2000th anniversary of the year 1 B.C.E.
--------------------------------------------------------------------------
A.R. Scott
A device such as a telephone will work. Call either the landlord or the
authorities the moment the hifi gets too loud. This method is effective and
best of all it will keep you out of trouble for intentionally transmitting
interference.
Good Luck
Michael Bruss wrote in article <5sfe98$ap7$1...@mark.ucdavis.edu>...
Steve Work
A.R. Scott (asc...@ix.netcom.com) wrote:
: A device such as a telephone will work. Call either the landlord or the
: authorities the moment the hifi gets too loud. This method is effective and
: best of all it will keep you out of trouble for intentionally transmitting
: interference.
Even easier: Get a board and place it on the floor or wall next to the
offender. Put on some earplugs cause you'll need them. Pound the board
with all your strength a few times the exact instant the idiot cranks the
thing up. Only takes a few times of doing this and they'll get the message.
Steve Work
Steve Work (slw...@netcom.com) wrote:
: Even easier: Get a board and place it on the floor or wall next to the
: offender. Put on some earplugs cause you'll need them. Pound the board
: with all your strength a few times the exact instant the idiot cranks the
: thing up. Only takes a few times of doing this and they'll get the message.
I left one thing out. Use a hammer to pound the board.
professor newtie
I believe Dirk has the right formula. AM is the way to go because
anything will demodulate it. Low frequency RF is best because it will
get onto the speaker cables then hopefully work its way into the
preamp. Every thing else in a high-fi is sheilded except for the
speaker cables.
Happy Jamming.
Jonathan M. Elson
Paul Farrugia (paul.f...@virgin.net) wrote:
: I am having trouble with neighbours who do not wish to lower the base of
: the hifi no matter what time of night it is.
: Does anyone know of a circuit that can be used to jam or at least inject
: noise into the system. Being a terraced property there is only 9 inch
: brick us.
: All I want an uninterrupted nights sleep.
: Any help appreciated.
: Paul
A few things from my college dorm days come to mind.
1. Get a billiard ball, and bounce it against the common wall everytime
they disturb you. We had a guy who did this in a steel/concrete building,
and although we had 200 people looking for him (probably including his
roommate) his identity was never found. You could be 10 feet from
him, and you couldn't tell where the sound was coming from. Just all
over the structure.
2. get a brick, and place it against the common wall. get an electric
jackhammer and bore a hole in the brick. this noise also spreads
all over, although where it is coming from can be determined. it is
like scraping fingernails on a chalkboard, however, and 15 minutes
of listening to drilling will have most humans in convulsions!
Note that this is a bit messy, but you can't get a much more annoying
sound. You CERTAINLY won't be able to hear their stereo, and neither
will they!
3. build a (working) replica of a 1911 spark gap transmitter.
Find an old diathermy unit, and get it running. Preferably of
the spark-gap design.
Good Luck,
Jon
Dave VanHorn
If I choose to go talk to someone on a distant repeater, which
requires me to use my 100W amp, because the idiot next door is
cranking up his rap music, is it my fault that his poorly designed
amp rectifies the RF and DC biases itself into silence?
I was watching TV, but since I can't hear the TV very well
because of the noise, (I really like the music) I decide
to go talk on the radio instead.. What's wrong with that?
Finesse...
Wm James
On Thu, 04 Sep 1997 03:07:01 GMT, sbrow...@asu.campus.mci.net
(Stan Brown) wrote:
:Note:
:Sony has just released some noise cancelling headphones, made
:especially for aircraft noise....i'll bet they'd work at least ok!
I think he wants to solve the problem, not just cover it up.
It doesn't take much broadcast power to over ride the signals
from a very close position. If they are using CDs or tapes, it
it a little more complicated but workable anyway.
William R. James
William K McFadden
If your neighbors play their stereo loudly late at night, try playing your
stereo back at them early the next morning. Some of my friends have had
good success with this technique.
BTW, don't do this if it will annoy your other neighbors.
--
Bill McFadden Tektronix, Inc. P.O. Box 500 MS 50-350 Beaverton, OR 97077
bill.m...@tek.com http://www.rdrop.com/users/billmc
CAUTION: Don't look into laser beam with remaining eye.
Any opinions expressed above are not necessarily those of Tektronix, Inc.
craig scilagyi
wire your speakers out of phase + to - - to + turn it up loud
Wm James wrote in article <341179b2...@nntp.a001.sprintmail.com>...
Ernst C. Land, Jr.
In article <a57cd$22621.222@LSNT1>, rap...@lightspeed.net says...
I've a simliar situation. I want to build a ghetto-blaster blaster.
How much microwave energy would it take to induce a squawk (negative
feedback in the amp) in an auto stereo? Would the carrier have to be
modulated, or just sent in the direction of the irritation?
Regards, A6