SmoothTalker Home Stealth X6 Extreme Power Series Signal Booster Best for locations with good outdoor but poor indoor signal Max Gain – X660: +60 dB - X665: +65 dB - X670: +70 dB Max Coverage – X660: 5000 sq ft - X665: 8000 sq ft - X670: 18000 sq ft Variety of convenient outside antennas $869.99 Choose Options
