The Model EXA-2000 Directional Remote Antenna is designed to enhance the radio range of Linear's receivers. This antenna can be connected to the F connector on many Linear receivers to improve their range when they must be located in poor signal reception locations. Usually an increase of 20-30% range can be expected. The versatile EXA-2000 can be mounted either vertically or horizontally. NOTE: Generally, the higher the antenna is mounted above ground level, the better the radio range will be.