What the hell is BB? Can I send a message by phone?

Bbs are also called pagers. The so-called user receiver in wireless paging system can only receive information, but can't send it. It needs to receive the useful signal and interference signal selected by the initial paging base station, return to the original paging local baseband signal, and generate sound (or vibration) and display numbers (or letters and Chinese characters). Pagers began to appear in China in the late 1980s. With the maturity of science and technology and the increase of social demand. After 2005, pagers disappeared from the stage in China.

BB was once a communication tool, it was just a tool to send and receive short messages! In wireless paging system, it is called user receiver. It consists of superheterodyne receiver, decoder, controller and display. It needs to receive the useful signal and interference signal selected by the initial paging base station, return to the original paging local baseband signal, and generate sound (or vibration) and display numbers (or letters and Chinese characters). How to use it: If you are looking for A, you are not at home. Like calling the paging station or something. A When you see it, I'll call you from a public phone.