My friend and i were inspired to build a quad copter after watching The Ben Heck show where he builds a quad copter but we wanted to send live video feed from the copter to a homemade controller with a screen. I was wondering how we might send these signals to the controller? We wanted to use a 2 Raspberry Pis to make the two components and want the one in the copter to send the signal to the other. What sort of receiver/emitter should we use?