The Audio-Technica ATW-A49A is a pair of UHF wide-band directional LPDA (log periodic dipole array) antennas that provide enhanced signal pickup for UHF wireless systems throughout a wide band range (470-950 MHz). Each antenna paddle is matched to 50 ohms impedance with an integral high-quality low-loss BNC connector; 6 dB gain. For permanent or temporary installation, mounts to 5/8"-27 threads.