Npc Wireless 3G/4G High Gain Yagi Antenna With 10 Metres Cable SMA- Male For Routers With Sma Female Port- 16 Dbi Gain Npc 3G 4G Yagi Antenna Is Meant For Places Where Outdoor 3G/4G Network Is Poor For Routers , One Can Use This Yagi Antenna To Boost Signal & Data ( This Antenna Is Compatible To Routers Having Sma - Female Port