Is it illegal to use wireless transmitter to send mobile advertising messages without authorization?

It is illegal to use wireless transmitter to send mobile advertising information without authorization.

Illegal behavior: refers to the behavior that violates the current laws and regulations of the state and endangers the social relations protected by law. Also known as "illegal behavior". Acts in violation of existing laws and regulations. Among illegal acts, only those that violate criminal laws and regulations and should be punished by punishment are crimes. All illegal acts should be dealt with according to their nature and degree, and legal sanctions should be given when necessary.