I want to make a multichannel Transmitter/Receiver which should transmit video, voice and control signals in the range of 1 km. I have searched modules(zigbee, wifi etc) but could not any suitable module which should give a data rate of capable of video transmission and cover the range too.

Kindly anyone help me with this.

 

Ain't gonna happen legally, not in the US, Can, or EU. Not without a FCC license.