Importer520 18dbi 2.4GHz Wifi High Gain Yagi Antenna 18 dB 2.4 GHz Wifi Yagi Antenna Booster RP-SMA For IEEE 802.11b, 802.11g, 802.11n Wireless LAN Bluetooth, Public Wireless Hotspot, WiFi, RFID, Wireless Video Systems 18db 18 dbi Brand New Importer520 Brand Product adjustable up/down direction ~ this is most critical part of using yagi antenna which got narrow direction beamwidth, one need flexbility to point sharply by adjusting direction up/down and left/right. Frequency Range-MHz 2400 ~ 2468 Bandwidth-MHz 83 Gain-dBi 18dBi Includes mast mounting hardware Vertical or horizontal installation