The radio administration sent me a text message asking me to consciously abide by the radio management regulations.

Unauthorized use of radio equipment (such as walkie-talkies, transmitters, radios, etc.) is a violation of radio management regulations. Now the state has relaxed this control a lot. In the past, you needed a license to use your mobile phone, but don't worry, this kind of short message will not be sent to you by the Radio Administration. Even if you use these devices, he can locate your approximate seat (such as a building), but he can't confirm who the specific person is. Now technology can't do this.