to buy one cell phone jammer circuit using 555 timer

Every year during the high school and college entrance examination, there will be network problems around the school, such as dropped phone calls and slow Internet access. This is because the school has turned on cell phone jammer. If we regard the mobile phone as a handheld two-way radio, the radio can be interfered, and the mobile phone is no exception. Just like any radio, the signal of a mobile phone can be disturbed.The mobile phone signal jammer with built-in antenna is easier to use, just plug in the power and turn on the switch.When using an external mobile phone signal jammer with antenna, lock the letter on the antenna corresponding to the letter on the host, and then turn on the power.

The principle of the mobile phone signal jammer is: in a certain frequency range, the mobile phone and the base station are connected by radio waves, and the data and sound transmission is completed with a certain baud rate and modulation method.This scanning speed can constitute garbled interference in the message signal received by the mobile phone, and the mobile phone cannot detect the normal data sent from the base station, so that the mobile phone cannot establish a connection with the base station.Aiming at the above-mentioned communication principle, the jammer scans from the low end frequency of the forward channel to the high end at a certain speed during the working process.

The mobile phone is manifested as a search network, no signal, invalid labor system and other phenomena. Eventually, the mobile phone has no signal and cannot receive text messages or calls.Wireless communication is the use of electromagnetic waves to stop communication. The functional characteristics of electromagnetic waves are determined by its frequency. Our mobile phone must emit electromagnetic waves that meet the request to connect to our communication carrier base station. The basic principle of Cell Phone Jammer Circuit Using 555 Timer is to transmit the same radio frequency as the mobile phone.