Approved and Works for DIRECTV, Satellite Dish, Comcast, Fios, AT&T (both DTV and U-Verse), Charter, Cox (and other CATV/CMTS), Off-Air Antenna, HD Antenna, and many more devices Removes noise and static from Coaxial Cable (often caused by wind, interference, dry weather (static build-up), and DC Ground Loops) Required for Satellite, Cable TV, Off-Air, FTA, RV, Antenna, and Many other Installations by NEC and/or most Local Electrical Codes High Quality Features: Gold Plated Center Conductor; UL Listed; Rated from 0 MHz to 3 GHz; UV Resistant Rubber Weather Seals; High Frequency; Low Insertion Loss (