http://pastport.jp/user/usgonishg ja-JP Signal jammers are devices that can send interference signals, thereby blocking or inhibiting the normal signal of the target device. In simple terms, they are like "noise makers" that interfere with the transmission of the original signal by emitting fre 2024-09-18T19:14:15+0900 http://pastport.jp/user/usgonishg/timeline/Strong%20signal%20barrier usgonishg http://pastport.jp/user/usgonishg/timeline/Strong%20signal%20barrier