receiver wiring

[newbee]

Hy everybody
I'am totally new in this business.
I would like to build a cheap quadcopter and was overthinking buying this transmitter&receiver set.
http://www.hobbyking.com/hobbyking/store/__9042__Hobby_King_2_4Ghz_6Ch_Tx_Rx_V2_Mode_2_.html

I was wondering if the receiver needs to be wired to the battery. In some wiring schemes I found it semes like it gets its current by the wires of the flightcontroller (wired to the channels)

thanks in advance

 

[RENOV8R]

Reciever typically gets it's power from the flight controller

 

[newbee]

Thanks!