http://pastport.jp/user/wifijammer ja-JP GSM jammers suppresses radio wavesHave you heard of a signal jammer? Many customers are unaware of this type of GSM jammers and do not understand its function, principle or usage. The following are some relevant information about the jammer. Useful for cu 2020-02-18T11:35:08+0900 http://pastport.jp/user/wifijammer/timeline/GSM%20jammers%20suppresses%20radio%20waves wifijammer http://pastport.jp/user/wifijammer/timeline/GSM%20jammers%20suppresses%20radio%20waves