Signal emitter convenient to install for radio and television wireless transmission

The utility model discloses a convenient-to-install signal emitter for radio and television wireless transmission, which comprises a supporting underframe and a sleeve, the bottom of the sleeve is fixedly provided with the supporting underframe, a threaded lifting rod is embedded in the sleeve, the top of the sleeve is provided with a threaded interface, and the threaded lifting rod penetrates through the threaded interface and is in threaded connection with the threaded interface. A machine box is fixedly installed at one end of the sleeve and communicated with the interior of the sleeve, a driving motor is fixedly installed in the machine box, the output end of the driving motor is fixedly connected with a driving gear, the driving gear is in meshed connection with the threaded end of the threaded lifting rod, a sliding groove is formed in the lower end of the sleeve, and a sliding sleeve is embedded in the sleeve in a sliding mode. The launch height of the launcher is convenient toadjust, meanwhile, the st