I'm certainly not an antenna expert, but why does this PR talk about "percent efficiency" when the industry norm is to compare antennas with dB gain compared to a reference antenna? Is this some "executive summary" dumbing-down or a classic case of "the emperor has no clothes"? I'm suspicious ...
"Percent efficiency"? Is this a dumbed-down "executive summary" or what? What's the gain, in dB, compared to a reference antenna? These are the numbers that mean something to engineers! Makes me suspicious that this is "cold fusion" all over again.
I have to admit I am no antenna expert. They did provide other figures of merit. Perhaps I failed to capture the most significant ones.
I would love to hear what anyone thinks after reading through their spec sheets online as inducated above.