Hi corvairbob:
I'm not a Tech, but it looks to me like an Antop Antenna knock off. You can do a web search and see for yourself.
Sometime ago, I saw a YouTube review by a Canadian TV installer in NE Canada who preferred Antop antennas for excellent UHF and good VHF (strong signal strength VHF) that could pull in the Buffalo, NY market for his customers in Canada.
https://www.youtube.com/watch?v=chfDB0JWz8M
But I'm not sure how hdfreeunlimited compares to Antop.
Also, hdfreeunlimited's 300 mile claim is just plain marketing hype. TV antennas are LOS and much beyond 75-100 miles they cannot "see" the signals due to the curvature of the earth, though not impossible. A very tall tower can probably help in some cases and there are TV DXers who enjoy picking up long range stations during E-Skip. I'm fairly close to the edge of my tech experience and would refer you to others on this forum who have spent their careers in the TV industry and are adept at explaining these matters in a much more thorough way.
I hope this helps somewhat. All the best.....