perhaps you will be interested in portable uhf vhf jammer

Sometimes we don’t want to talk to anyone, but the annoying people will keep calling you. Therefore, your boss can call you several times during the weekend and ask you some questions, which will affect your mood throughout the day. When you don't want to hear the phone call, just turn on the mobile phone signal jammer, no one will disturb you.When you do not want to be tracked, you urgently need to purchase a GPS signal blocker to ensure your private life and private conversation. More importantly, GPS jammers can also protect your private speech from eavesdropping.

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 Portable UHF VHF 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.If you have not used jammers before, you should know that they are user-friendly and easy to operate. When you want to carry a jammer with you, a portable jammer is perfect for you.

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. 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.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.