cell phone jammer circuit using 555 timer prevent signal

The interference range of the same jammer used outdoors will be doubled compared to indoor interference. If the interference range is less than 200m, generally set a Cell Phone Jammer Circuit Using 555 Timer, which can be hung on the indoor wall with a distance of 1~1.8m on the ground; if it is greater than 200m, generally Two or more units should be installed and placed on the front and back walls; if the interference space is outdoors and greater than 1000m, multiple units should be used, and the honeycomb distribution effect is better.

Obviously, the farther the jammer is from the base station, the weaker the field strength and the larger the interference radius, and vice versa. The cell phone jammer will lose its interference ability if it is very close to the base station.Since the frequency band used by mobile phones is dedicated, the transmission frequency of the mobile phone signal jammer in the conference room is completely within the mobile phone working frequency specified by the country, so it has no effect on other electronic equipment such as TVs and radios. At the same time, the mobile phone jammer only interferes with the BCH transmitted by the base station received by the mobile phone, so that the mobile phone cannot establish contact with the base station, so it has no effect on the mobile phone.

Furthermore, although the signal field strength it emits is stronger than that of BCH, it is much weaker than the electromagnetic radiation field generated by mobile phone calls, so it will not cause harm to the human body. It can be used for a long time with confidence. Telecommunications focuses on the research and development of mobile phone signal amplifiers.