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making a noise sniffer help

Printed From: the12volt.com
Forum Name: General Discussion
Forum Discription: General Mobile Electronics Questions and Answers
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=49701
Printed Date: May 12, 2025 at 8:13 PM


Topic: making a noise sniffer help

Posted By: soundmasta
Subject: making a noise sniffer help
Date Posted: February 09, 2005 at 7:35 AM

a few years ago i read an article in car audio and electronics that was about useful tools that you could make yourself. there was stuff like muting pluges and test lights, but one was called a "noise sniffer". it was supposed to help determine if system noise was being introduced through a grounded out wire by pin-pointing the spot that was bad. or somthing. i lost the magizine and have been looking for a similiar article ever since. does any one know what is or how to make a noise sniffer?

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Replies:

Posted By: soundmasta
Date Posted: February 09, 2005 at 7:53 AM
never mind. i found out. let me know if you want to know more.

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Posted By: stevdart
Date Posted: February 10, 2005 at 12:33 PM
I want to know more.  Tell us what you know about it.




Posted By: skoldspuppy
Date Posted: February 10, 2005 at 1:52 PM

Yeah me to Id love to know about that device



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2004 Honda Civic Ex 4Dr

Kenwood DDX-7015/W Nav
4 Fosgate T152C
Hifonics Brutus BX1500D
RE XXX 12 in a 4 Cube Snail Shell




Posted By: soundmasta
Date Posted: February 11, 2005 at 7:34 AM

what you're supposed to do i sget an old cassette walkman, or some kind of tape player, pull out the head that reads the cassettes, and thats about it. i went an picked up an old panasonic taperecorder for a dollar and gutted the motor out of it, extended the wires on the head (there were only five) so they would be long enough to reach around the inside of a car, modified the play button so it was just a simple switch.

now, i think that when i took the motor and gears out i may have ungrounded somthing that i needed, becasue when i first got it i could hear static through the speaker when i hit play, and now when i hit the switch there is nothing, but im still working on it. maybe i'l try again and leave everything in tact with a different player.

ideally, when it is all up and running, you hit play, it activates the tape head which picks up electromagnetic signals, much like those that cause radiated noises in stereos, and other types of interferences as well. the device "sniffs" out the source of the noise by playing it through the speaker. natrually, the louder the noise on the speaker, the closer you are to the source.

i figure it will help determine if the ign system is causing noise, or the charging system, or an acc. in the vehicle, or where a certian wire is shorted out at, with little to no thinking.



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Posted By: skoldspuppy
Date Posted: February 11, 2005 at 1:08 PM

Wow I would have never thought of that, hell I was think it was some elobrate thing you had to build from radio shark parts

Im going to give it a shot with my old walkman

Thanks
Skold



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2004 Honda Civic Ex 4Dr

Kenwood DDX-7015/W Nav
4 Fosgate T152C
Hifonics Brutus BX1500D
RE XXX 12 in a 4 Cube Snail Shell




Posted By: stevdart
Date Posted: February 12, 2005 at 8:30 AM
Cool.  I love that MacGuyver kind of stuff!




Posted By: overworked
Date Posted: February 12, 2005 at 8:49 PM
Guys! that has been around for years!, We are just supposed to know better! thats all! lol

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Posted By: soundmasta
Date Posted: February 14, 2005 at 7:57 AM
my first attemp didn't work. i think for my next one im going to make sure it plays tapes before i try.

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Posted By: soundmasta
Date Posted: February 14, 2005 at 7:57 AM
my first attempt didn't work. i think for my next one im going to make sure it plays tapes before i try.

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