Hi Tom,
I presume this is the loop that is a track on a PC Board? I reported on that here on the reflector towards the start of the year. I had intended taking it as my “gain antenna” for my HT on my trip to Dayton this year - that got cancelled of course. I have used it with a couple of the local repeaters here and it worked as expected.
To trim it onto the exact frequency I used my $50 NANAVNA and my RigExpert Analyser doesn’t cover 2m (I have the just HF one).
It seems only like I made a short comment about it here:
I just dug out the box with the loop antenna in, to see if I have any documentation in English for you - sorry - it’s just a printed article in German!
It’s very straight forward to build though - your main issue will be how to mount it to be solid and not be affected by anything or anybody getting too close to it.
73 Ed.