Thread: Puzzler
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Old 01-02-2007, 01:31 AM   #2
steambender
It just needs a minor tweak...here...
 
Join Date: Dec 2006
Location: kitty corner from where I grew up
Posts: 48
One or more of the stores probably had RF motion detectors - door openers, alarm system, or a UHF telemetry data link (alarm back up to phone lines) or some other source of radio transmission that was close enough in frequency to interfere with the receiver in your car. They don't make the receiver very robust, just depend on the unique digital serial number code for identification

hard to decode the little burp of data from your hand held fob running off a watch battery when it was deaf from being overloaded. lots of shared spectrum users out there. Your home wireless lan runs at the same frequency (2.54 GHz) as your microwave oven. the 802.11 wireless protocol is designed to tolerate it.

I recommend tin foil hats, heavy duty folded three ply.
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