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Message Forums Car Stereo Message Forums > Technical and System Design > Cell phone interference???? Strange speaker noises- Help!
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jmorand
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 The cell phone is definitely causing the problem

My wife has a 2003 Acura TL and the exact same problem occurred. The dealer replaced the right front speaker, even though they couldn't duplicate the problem. It didn't solve the problem of course. Then my wife mentioned the cell phone as a possibility, and when we turned off the phone, the noise never occurred. It is also a Cingular GSM phone. Having the phone on while she drives is not a necessity, since she's not one of those people who hold the cell phone in one hand and talks while driving (geez, I hate those people, male or female, get a hands free set and save someones life),so its not a problem. I am surprised the dealer didn't think of this, but next time in I will inform them.

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New Post 02-17-2005 06:33 PM
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korndog
Member

 RE: Location Doesn't matter

quote:
Originally posted on 02-08-2005 by 3degree
It doesn't seem to matter whether it's on the clip on my belt, in the passenger seat, or in the tray under the head unit..... still does it! Haven't tried the backseat or the trunk (although that WOULD be somewhat impractical :> )

i took apart a cd player and removed the shielding, you could hear the interferance, i then put it back on and it interferance stopped until i could point the back of the cell phone (i have an internal antanna so microwaves shot out from the back) was pointing in between the sheilding plates. I guess that solves that problem. You could probably get away with just wrapping ur cd player with aluminum and grounding it. copper works best though.

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Diode
Member

 

Yes, the cuplrit is the cellphone. Cellphone's don't just sit idle and do nothing when they aren't being used. The cell network will occasionally poll your phone to see if it is still active, or signals are transmitted back and forth as you change from one cell tower coverage area to the next.

Unfortuantely, Cingular's system in particular operates at frequencies that interfere with audio equipment, especially if it is unshielded. My computer makes the noise any time I have the speaker system turned on and my LG 1400 on the desk. I don't get it in my truck probably because I set the phone on the passenger seat.

I've gotten used to the little blurbs of digital data enough that I can actually recognize the particular blurb that signifies an incoming call and I can answer the phone before it actually rings. I just tell my wife I'm psychic...she just says I'm psycho...

Just to pick a nit, the comment about cell phones generating enough static to set you on fire while pumping gas....this has been proven to be 100% completely false. Cell phones don't generate static and they don't transmit enough energy to heat anyhting up, much less to ignition point.

In almost every case of the "mysterious cell phone/gas pump fires" it has been shown that the person involved invariably got back into their vehicle while the gas was pumping. The static that ignited the fires came from the static charge from them sliding off the car seat when they got back out to get the pump handle out of the tank. So, when pumping gas, stay outside the vehicle until you are done. Don't get back in the vehicle, jump out and grab the pump handle. If you must get in the vehicle and back out, before you touch the pump handle, touch some other metal away from the gas fumes to discharge the static.

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New Post 02-23-2005 11:05 PM
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korndog
Member

 RE:

quote:
Originally posted on 02-23-2005 by Diode
Yes, the cuplrit is the cellphone. Cellphone's don't just sit idle and do nothing when they aren't being used. The cell network will occasionally poll your phone to see if it is still active, or signals are transmitted back and forth as you change from one cell tower coverage area to the next.

Unfortuantely, Cingular's system in particular operates at frequencies that interfere with audio equipment, especially if it is unshielded. My computer makes the noise any time I have the speaker system turned on and my LG 1400 on the desk. I don't get it in my truck probably because I set the phone on the passenger seat.

I've gotten used to the little blurbs of digital data enough that I can actually recognize the particular blurb that signifies an incoming call and I can answer the phone before it actually rings. I just tell my wife I'm psychic...she just says I'm psycho...

Just to pick a nit, the comment about cell phones generating enough static to set you on fire while pumping gas....this has been proven to be 100% completely false. Cell phones don't generate static and they don't transmit enough energy to heat anyhting up, much less to ignition point.

In almost every case of the "mysterious cell phone/gas pump fires" it has been shown that the person involved invariably got back into their vehicle while the gas was pumping. The static that ignited the fires came from the static charge from them sliding off the car seat when they got back out to get the pump handle out of the tank. So, when pumping gas, stay outside the vehicle until you are done. Don't get back in the vehicle, jump out and grab the pump handle. If you must get in the vehicle and back out, before you touch the pump handle, touch some other metal away from the gas fumes to discharge the static.



its false? yay, less worries for me

<-- works at a gas station

to tell u the truth, i didn't hear it from somebody or guess it, i saw it in the introduction staff video when i first started working. i'm suprised that they would be wrong though.

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Diode
Member

 

I believe it. A lot of my local stations still put up the signs warning about it too. I'm not surprised since it is standard business practice these days to err on the side of caution to avoid any liability. It's their mentality to warn against it (even if it is not true) and end up being wrong than to not warn about it and get sued if something does happen.

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New Post 02-24-2005 07:52 AM
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glassman
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Ah man when you start hearing this type of noise its pretty much too late for you and youve got the virus associated with the emmitting rays that that these type phones send out. At any time now youll start to bleed from your ass and contniue with some slight anal leakage. GET RID of the phone and save your loved ones around you as its easily transamitted as an airborn virus. J/K The waves are not good for you though. I experienced it most on a fctoryr Galant Radio with an I90 Nextel phone throuhg simple RF interference. Its no bid deal but sure is a pain in the ass sometimes...

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New Post 02-25-2005 01:07 AM
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