I did some more testing with it today. I even connected a SensarPro and tried it at 10 and 20 for the amp.
One thing that makes it a bad choice is that I lost 2 lo VHF channels 2 & 6. 2 is METV which has a lot of good programming and 6 is ABC.
The 2nd thing is that unless the stations you want to get are real close to 180º apart the front and rear direction is of no benefit.
So even though the 2 channels to the rear were only 14 miles away they did not get a useable signal because they are 90º from the channels peaked to the front.
I was underwhelmed when I 1st tried it. I am less impressed now.