Satellite Dishe DiSEqC Motors
The satellite dish motors can cover the whole sky and acquire all satellite (that they can with the size of dish that we have), so you can see a wide programmation. It is much more convenient than having to mount multiple satellite dishes.
The disadvantage is that if we are going to change a satellite very east to a satellite very west, the engine takes a few seconds to arrive and the channel switching is not instantaneous.
A very simple action for a change fast the channel is to change the satellite to have the list sorted by satellite, then to jump from one satellito to the next motor movement is minimal channels and therefore to the user wait a short time.
The changing channels within the same satellite is instant because the antenna doesn´t move in that case.