Better the effect of the antenna comes with an external receiver to Uno validity. In order to reach even greater ranges, nobody needs, but also a better picture yet visible. The Fatshark glasses has even no failures or stripes, but you realize that the picture is slightly krisselig. This is not the case with the external Uno receiver. If necessary, making the purchase of a duo-receiver with a Cloverleaf and in addition this antenna at the receiver point. Then one does not lose sight immediately when the copter moves outside of the opening angle of the patch antenna.
I can recommend the antenna very. Only then FPV is really a pleasure! The investment is worth it.