Well, the strangest thing happened to me today. I was driving home from work and talking to my girlfriend through the Bluetooth of the car. My cell btw is a razr from Cingular and I was in my 525i. I was stopped at a light and all of a sudden I lose the signal to my girlfriend and this random old lady starts talking in my car! She was talking to her friend and somehow got disconnected and patched to me! I thought the car couldn't randomly pick a signal up but had to be paired. It was so strange to have the car pick up a random conversation and override my current call!  |
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I don't think the interference came from the bluetooth, but rather it came from your cell phone itself. I've had this happen on my cell phone before . .
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| Reply » Strange Bluetooth incident |
it would be funny if you say "hey would you SHUT THE F*** UP?!" to that old lady 
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| Reply » Strange Bluetooth incident |
Quote: | it would be funny if you say "hey would you SHUT THE F*** UP?!" to that old lady |  
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| Reply » Strange Bluetooth incident |
I agree that the interference was probably caused by cell phones. All radios produce what are known as intermodulation characteristics. When two radios are proximate to one another and transmit simultaneously, they produce intermodulation characteristics that are rebroadcast on third (or greater) frequency(ies). Using simple algebra, let radio one = x with radio two = y. Using the formula 2x-y=z, z becomes the third order intermodulation product or the new frequency upon which one is transmitting.
If you were close to the older lady's cell phone plus that of another person, all using your cell carrier's frequencies, the receiver in your cell phone could be overcome by the third-order transmitting product instead of the signal that you want from the cell company. The result is that you lose your phone until someone moves and the carrier's signal becomes stronger than the undesired signal.
It is unlikely that the Bluetooth would cause the problem. Cell phones operate (typically) in 1.9 GHz as a frequency. Bluetooth devices opperate in 2.4 GHz. With 500 MHz of separation, the liklihood of intermodulation characteristics, while not impossible, are remote. The security protocols in the 802.15 standard, upon which Bluetooth operates, would be unlikely to permit the type of interference you experienced.
The good news is that this type of problem should rarely occur and by moving a block or so, it should go away. If it becomes persistent, it may be another problem requiring your cell phone to be serviced.
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Strange Bluetooth incident