Frequency agile
Good beamwidth
Good gain
Disadvantages:
Mechanical complexity and weight
High cost
I've got no place to put it!
Back to dreaming of a country house atop a hill...
I had one of those, just below the crest of a hill in southwest Wisconsin. When the tornado came though, it took off the south side of the roof of the barn and knocked an oak tree down on my old Ford wagon--and we were the lucky ones. The folks who had the "country house atop [the] hill" lost their house & barn to the twister. It was at that point that country living didn't seem all that attractive.