FWIW - The FCC ULS is showing 5 conventional repeater licenses for Charter Communications that may be accessible from locations in McDowell County:
461.175 - Burke County
461.325 - Buncombe County
463.9875 - Buncombe County
463.450 - Yancey County
464.025 - Yancey County
The most-interesting frequency above might be 461.175 - Burke County. The license was issued issued April 14, 2006.
Although I haven't made any new entries for them in my log for almost a year, Charter techs were using an unlicensed repeater - 453.450 / DPL 125 - residence service calls in portions of Caldwell County.