Active directional UHF antennas deliver improved wireless signal reception with integrated amplification. This dipole array produces a cardioid pattern towards the desired coverage area with greater rejection of RF signals outside the coverage area when compared to standard omnidirectional antennas. These antennas are for use with receivers which can supply 10-15V DC bias such as ULX-D and Axient Digital. (Not for use with SLX-D or for transmitting from PSM transmitters)