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

From: Gareth (me_at_privacy.net)
Date: 09/19/04 

Date: Sun, 19 Sep 2004 13:48:03 +0100

Nina wrote:
> 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
> nina.p20@gmail.com

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. 

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