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99 posts

Master Geek
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Topic # 24910 6-Aug-2008 14:13
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I use my Nokia BH-501 BT Headset with Nokia phone daily (while walking to & from the office), and it is a fantastic music and call handling solution. I am intrigued as to why I get repeated but random momentary dropout  at 4 or 5 of the traffic lights on Queen St, Akl. I have failed to identify which phase of the lights or pedestrian signal it is on, and am confused as to why B/T would be used at traffic lights, and why it would interfere with my signal - the phone sits in my top pocket so only 50cm from headset. Any of you boffins have a clue?
Thanks
Mark

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25684 posts

Uber Geek
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  Reply # 154656 6-Aug-2008 15:10
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Bluetooth uses the 2.4GHz ISM band - this is the same frequency band used by WiFi, 2.4Ghz cordless phones, 2.4GHz video senders and numerous other devices that want unlicenced spectrum. Nobody needs a licence to build equipment or use this band.

It's not necessarily the traffic lights using Bluetooth but obviously using the 2.4GHz spectrum for something - maybe sychronisation?



99 posts

Master Geek
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Reply # 159928 26-Aug-2008 16:26
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Good thinking, thanks for that.

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