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sally shackelford

Welcome to

National Digital Learning Day!
We hope you enjoy some of the tech projects that were
created by Mrs. Shackelford’s 2nd Graders!

We

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This handy, it can be used to prevent use of mobile phones in examination halls, confidential rooms and, etc. It is also useful for detecting the use of mobile phone for Spying and unauthorized video transmission. The circuit can detect the incoming calls pocket-size mobile transmission detector or sniffer can sense the presence of an activated mobile cell phone from a distance of one and-a-half meters. So and also outgoing calls, SMS and video transmissions even if the mobile phone is kept in the silent mode. The moment the Bug detects RF transmission signal from an activated mobile phone, it starts sounding a beep alarm and the LED blinks. The alarm continues until the signal transmission ceases. The capacitor C3 should have a lead length of 18 mm with lead spacing of 8 mm. we have to carefully solder the capacitor in standing position with equal spacing of the leads. The response can be optimized by trimming the lead length of C3 for the desired frequency. We are using a short telescopic type antenna. The unit will give the warning indication if someone uses Mobile phone within a radius of 1.5 meters.

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Welcome to dld!

1. Welcome to National Digital Learning Day! We hope you enjoy some of the tech projects that were created by Mrs. Shackelford’s 2nd Graders! We

Welcome to dld!

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Welcome to dld!