BlueProton DJI Phantom 4 & 3 Advanced/Professional WiFi Signal Range Extender Antenna Kit by ARGtek DJI Phantom 4 & Phantom 3 Advanced & Professional WiFi Signal Range Extender Antenna Kit. You should install a firmware update to increase your channels to 32 channels prior to installation. Increases range from approx 2.5 Km to up to 7.5 Km (actual results vary with environment) Lightweight, durable, pratical and convenient to use in compact design. Two customized high-gain 2.4GHz-2.591GHz 7dBi panel & two 7dBi 2.4GHz Omni antennas with installation hardware