Thanks for the feedback. I was using the same external speakers with another antenna config (buddipole) at the same distance away from my shack with no problems. I would like to keep the emission on the coax limited and keep as much RF outside of my house as I can. I wasn’t sure if I could add a wire to the “ground” terminal on the matchbox that would go down vertically from my roof and that would act as the counterpoise. Thoughts?