cep telefonu dedektörü

  1. guclusat

    Cell Phone Detector (Cep Telefonu Dedektörü)

    This is a mobile phone sniffer circuit that can detect the signals being used in the GSM (Global System for Mobile Communication) band at about 900 MHz. Since the signals are digitally encoded, it can detect only the signal activity, not the speech or the message contents. A headphone is used to...