Well If your working on a system higher than 500 Meg. Anything over 200 ft rg-11 is going to be garbage High band roll off. What Hack Company is making you run a 300ft rg-11 run? Most have it set at 200ft, anything after that needs to be looked at hard. Todays digitial quams just dont hold on Rg-11 at that distance...
But to answer your question. My hands.....It aint 1 inch for christ sakes.
This is CABL.com posting #261924. Tiny Link: cabl.co/mbgiK