bman has lots of charts and graphs to prove how good they measure in his room!

https://www.someecards.com/usercards/viewcard/58941b888ebce1a69e5d0db465d4d311/?tagSlug=workplace


A-LFR/1000-8 & 2/500v4x2
1000-3,1500-3
100,160,QS10x2,800,M5x2,M2/3/50v4
Air Force, Freedom
had v2