Summary: I am not sure how efficient it is. It increased signal strength, to another cottage about 110 feet away, but not to full signal strength. Maybe the distance is to far. Its field of sending signal is very narrow so you need to point it well.
Summary: To get the max benefit, one has to point this antenna right at the source. Fine tuning is cumbersome since it is large and the brace offers limited adjustment flexibility. Also, since it is outdoors, going in and out to make each adjustment is much work.