The introduction of phone signal jammer

It is understood that the mobile phone signal jammer on the market can limit the mobile phone signal with a radius > 20m away from the transmitting station. The shielding radius is adjustable. It only shields the mobile phone signal without affecting other electronic devices. Save electric energy, and the power is 20w-480w.

When the mobile phone works, the mobile phone and the base station are connected through radio waves within a certain frequency range to complete the transmission of data and sound with a certain baud rate and modulation. According to this communication principle, the mobile phone signal shield scans from the low frequency of the front channel to the high frequency at a certain speed. Mobile phones are characterized by search network, no signal, no service system and so on.

The common mobile phone signal jammer device in the market has an operating frequency of 869 ~ 894mhz; 825~960MHz； 1805 ~ 1880MHz and 1900 ~ 1990mhz, etc. The operating frequency bands are cdma800, GSM900, DCS1800, pcs1900, WCDMA, etc. It can control the range of about 40m in diameter, use DC-DC converter input voltage and 5V output voltage.