GSM-ANT-1 is an outdoor, low-profile, directional 300 Ohm antenna designed to be used with a GSM mobile signal booster. The GSM-ANT-1 is rated up to 5 dB gain which is ideal for larger GSM installations requiring longer distances. It is capable of handling signal frequencies from 824-894MHz, 1710-1990MHz, and 1900-2170MHz. This antenna offers high efficiency and a wide operating bandwidth, making it perfect for use with GSM signal boosters in locations that require reliable and consistent GSM coverage.