The way it operates is however specific to protocols. It can be used to target specific devices to 'annoy'. Preventing to make or keep a connection is simpler, but really hard to detect. You can optimize it to only start jamming when you receive the first packet, but that may still allow the first packets to be received.Īlso you need to place the jammer close to the receiver. Only you need to do that on all channels you want to jam and it may need quite some power. It is like shouting really hard, so you cannot hear those speaking at lower volume. The first one is rather difficult to do it right. There are many ways to jam a signal, but it basically comes down to 2 methods: To be honest I do not have idea how complex this is and maybe you can help to discuss to get an idea.Įdit: Of course a ESP32 with ethernet should be used to transmitt the jammer detection alarm because ESP8266/wifi is disturbed and cannot be used. My feeling is that for a whole buildung one jammer detector might not be enough so maybee several esp8266 units are required? Do you have an idea if this is also possible by a esp8266 and maybe use of ESPEasy (wifi environment scanner) to detect such changes/jammer in action? Now I found sensors for jammer detection which can switch a dry relay contact in case they detect a 2,4GHz Jammer.įor my understanding this is a special way of analyzing the 2,4GHz band and changes in this band. Therefore this sensores become unusable for alarm purpose because it´s not possible to differentiate if the 2,4GHz signal is disturbed by a jammer or simply no change. So very soon I recognized that wifi/zigbee operated deviced by battery are optimized for low energy consumption and it is not possible make use of them because of non gauranteed cycle time of the data, they normaly transmit new information when they are chaneged. Currently I´m reading much to get into the topic of possibilities to create simple alarm central by the usage of standard devices.

Someone jamming wifi signal