Excellent solution (but not magic!)

(+) Quality product as a whole (antenna, cable box)
(+) Filled his mission very well if there is already a signal to be picked out!
(+) Solves just a technical problem, without special knowledge.

(-) The cable of 10 m may be a little shorter in some cases. There should be a paid option to add 10 m extension (if it generates no signal loss?)
(-) English manual (too) brief, the Chinese seem to notice much more complete (but I do not read Mandarin), but did not hurt the plant.

Council:
Do not install the antenna in an area where your phone detects a reception (even if it is very bad). Is no miracle if you have no reception there with your phone (sounds obvious, but worth remembering).