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Does anyone know if cell phones can interfere with bluetooth or RF signals of other devices?
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technologyaddict405 |
November 21, 2009 10:35 AM
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The short answer is yes. Despite the intervention of the government, interference happens.
Now to be a bit more thorough:
Not knowing what part of the world you're from, it's hard to say what organization in your country regulates electromagnetic frequencies. In the United States, the Department of Commerce is responsible (specifically the National Telecommunications and Information Administration). A breakdown of the frequencies can be found here:
http://www.ntia.doc.gov/osmhome/allochrt.pdf
Normally radio-frequency interference isn't an issue. Problems tend to be caused by the device itself. For example, have a look at the attached video. In this case, receiving a call on a specific cell phone causes an oven to turn on. Obviously, this is not caused by the cell phone's signal itself; the oven is constantly being bombarded by signals to lots of other cell phones nearby. Instead, some internal component (usually one utilizing an inductor) acts as an antenna, causing a different frequency to be broadcast which causes interference.
This is likely the type of interference you're getting. Bluetooth uses a range of frequencies in the 2.4 GHz area. (Actually, a spread of frequencies around 2.4 GHz are used for higher throughput.) There are lots of other devices that use this portion of the spectrum, so I wouldn't be too surprised if some other 2.4 GHz device interferes in some way. However, this hardly ever happens; most likely you're seeing interference of the type I described earlier.
Now to be a bit more thorough:
Not knowing what part of the world you're from, it's hard to say what organization in your country regulates electromagnetic frequencies. In the United States, the Department of Commerce is responsible (specifically the National Telecommunications and Information Administration). A breakdown of the frequencies can be found here:
http://www.ntia.doc.gov/osmhome/allochrt.pdf
Normally radio-frequency interference isn't an issue. Problems tend to be caused by the device itself. For example, have a look at the attached video. In this case, receiving a call on a specific cell phone causes an oven to turn on. Obviously, this is not caused by the cell phone's signal itself; the oven is constantly being bombarded by signals to lots of other cell phones nearby. Instead, some internal component (usually one utilizing an inductor) acts as an antenna, causing a different frequency to be broadcast which causes interference.
This is likely the type of interference you're getting. Bluetooth uses a range of frequencies in the 2.4 GHz area. (Actually, a spread of frequencies around 2.4 GHz are used for higher throughput.) There are lots of other devices that use this portion of the spectrum, so I wouldn't be too surprised if some other 2.4 GHz device interferes in some way. However, this hardly ever happens; most likely you're seeing interference of the type I described earlier.
voted helpful: psionandy
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