8DB WiFi Signal Range Extender Booster for DJI Phantom 3 Advanced & Professional & DJI Phantom 4

https://www.amazon.com/Extender-Booster-Phantom-Advanced-Professional/dp/B01IUODDVU/ref=sr_1_9?ie=UTF8&qid=1479265948&sr=8-9&keywords=xmipbs+extender