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Do technologies in new cars, like bluetooth that you hook your cell phone up to, and a navigation system, emit radiation that is any more of a concern than what we are exposed to already with things like wireless internet in my house?<br><br>
It seems that a lot of new cars have these features and I am wondering if there is anything to be concerned about.
 

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<div>Originally Posted by <strong>momofmine</strong> <a href="/community/forum/post/15362359"><img alt="View Post" class="inlineimg" src="/community/img/forum/go_quote.gif" style="border:0px solid;"></a></div>
<div style="font-style:italic;">Do technologies in new cars, like bluetooth that you hook your cell phone up to, and a navigation system, emit radiation that is any more of a concern than what we are exposed to already with things like wireless internet in my house?</div>
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GPS receivers are in fact receivers. The field that they probe exists regardless of the presence of the detector. Bluetooth devices are microwave transmitters, but they're extremely weak--about three orders of magnitude less than a cell phone.
 

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Thanks! I'm sorry, but I'm not mechanical at all, so does that mean they are good or bad?<img alt="" class="inlineimg" src="http://www.mothering.com/discussions/images/smilies/lol.gif" style="border:0px solid;" title="lol"><br><br>
Like, if the bluetooth is three orders less than a cell phone, what does that mean? Because you aren't talking on your cell phone all the time, but if you were riding in a car that had the bluetooth thing, would it be transmitting or whatever the whole time? So, even if it was less, would there be more overall exposure because it is going all the time?<br><br>
Sorry, I am totally not mechanical!
 

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<div>Originally Posted by <strong>momofmine</strong> <a href="/community/forum/post/15362517"><img alt="View Post" class="inlineimg" src="/community/img/forum/go_quote.gif" style="border:0px solid;"></a></div>
<div style="font-style:italic;">Like, if the bluetooth is three orders less than a cell phone, what does that mean? Because you aren't talking on your cell phone all the time, but if you were riding in a car that had the bluetooth thing, would it be transmitting or whatever the whole time? So, even if it was less, would there be more overall exposure because it is going all the time?</div>
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"Three orders of magnitude" means a factor of 1000 (10 x 10 x 10, or 10^3).<br><br>
A lot of Bluetooth appliances--headsets, for example--are battery powered, so I would expect them to try to save power when not actively in use (although I'm certainly not an expert on their design). The upshot would be reduced RF exposure from the part of the system that is closest to the body.<br><br>
They're really low-power devices, though. If one assumes that a typical microwave oven leaks about a watt (per unit area) at a distance of a foot, which might not be too off the mark, using a Class 2 (2.5 mW) Bluetooth headset at full blast would be something like standing 20 feet from that oven. The base unit in the car probably operates at even lower power so that it doesn't have to sort out replies from adjacent vehicles.<br><br>
This might be cold comfort if one is suspicious of microwave ovens and similar radio-frequency sources, but as a long-time radio hobbyist, I file the exposure as pretty low indeed. I imagine I'm taking in about as much RF energy from the wireless router as I type.
 

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I don't know about all the exposure stuff, but GPS is healthier for me than stressing out and having a panic attack because I'm lost. <img alt="" class="inlineimg" src="http://www.mothering.com/discussions/images/smilies/winky.gif" style="border:0px solid;" title="Wink">. Really, I have a horrible sense of direction, so I guess for me any bad is outweighed by the good.
 

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<div>Originally Posted by <strong>Drummer's Wife</strong> <a href="/community/forum/post/15363695"><img alt="View Post" class="inlineimg" src="/community/img/forum/go_quote.gif" style="border:0px solid;"></a></div>
<div style="font-style:italic;">I don't know about all the exposure stuff, but GPS is healthier for me than stressing out and having a panic attack because I'm lost. <img alt="" class="inlineimg" src="http://www.mothering.com/discussions/images/smilies/winky.gif" style="border:0px solid;" title="Wink">. Really, I have a horrible sense of direction, so I guess for me any bad is outweighed by the good.</div>
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GPS is a receiver and is not transmitting any RF, so you're okay there.
 

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<div>Originally Posted by <strong>KimPM</strong> <a href="/community/forum/post/15363740"><img alt="View Post" class="inlineimg" src="/community/img/forum/go_quote.gif" style="border:0px solid;"></a></div>
<div style="font-style:italic;">GPS is a receiver and is not transmitting any RF, so you're okay there.</div>
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That makes sense, thanks! I just read through the other posts - not that I understand it all, but it's interesting. <img alt="" class="inlineimg" src="http://www.mothering.com/discussions/images/smilies/orngbiggrin.gif" style="border:0px solid;" title="orange big grin">
 
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