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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

RF Signal/Mobile Phone Detector

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CircuitMan

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Ello people, am looking for a nice circuit that can detect UK mobile Phones. The device must detect the RF signal and produce a light signal as the output to indicate that a mobile phone is being used. ANyone got a circuit!

Oh by the way iam not sure how the antennas will work to detect the mobile! :oops: :oops: :?
 
i think this is JUST what ur looking 4. its directional 2, so u can hunt someone down
 

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