[Btech GMRS 50v2]

So I just tested the Betec 50v2 power and SWR with a Surecom SW-102 meter and 2' RG 8x patch cable and connected to LMR 400 to my j-pole antenna. Here are my results across several channels: 

Low Power 6.4 watts

Medium Power 24.6 watts

High Power 55.7 Watts

My first test was with a 12' rg8x patch cable and the numbers were considerably lower (eg 38.4 watts high power) then I used a 2' patch cable and got the higher above numbers.