EnGenius – SN-UL-AK20L-IND – EnGenius Indoor External Antenna – 863 MHz to 865 MHz, 900 MHz to 930 MHz – 2.7 dBi. Includes 20-meters of LMR-400 cable. Weight (Approximate): 11.29 oz. Form Factor: Ceiling Mount. Product Name: Indoor External Antenna. Frequency Band Type: UHF. Antenna Gain (Isotropic): 2.7 dBi. Operating Frequency Range: 900 MHz to 930 MHz. Operating Frequency Range: 863 MHz to 865 MHz.