These In-Line Baluns have an SO-239 UHF type connector on both the input and output side. In-Line baluns provide similar performance to their respective wire balun counterparts. Applications for In-line baluns include line isolation anywhere along the coax transmission system and use on Quad and Yagi antennas. W2AU Baluns are transformer designs with ferrite cores to provide 95% minimum coupling efficiency. The balun can be used anywhere along your coaxial transmission path to help eliminate RF feedback and TVI. Some users have noted a reduction in interference with the use of line isolator between their transmitters (transceivers) and linear amplifiers. Another use is placing one at the vertical, beam, or quad antenna to augment the antenna’s matching system to coax.