RG11 is higher quality than RG6, but also much thicker and harder to work with. It is usually used for longer cable runs (over 150 feet) because it loses signal more slowly.
-- We can never have enough of nature. We need to witness our own limits transgressed, and some life pasturing freely where we never wander.
Thank you all for the explanations. It appears the cable installer used appropriate wire. I will have a number of RG 6 drops, and the length of the run was about 120'. -- "If you put the federal government in charge of the Sahara Desert, in 5 years there'd be a shortage of sand." - Milton Friedman"