The Antennas Direct UHF / VHF TV antenna combiner merges the signals from a UHF antenna with any VHF antenna on the same down lead coaxial cable. Designed to be used with a single UHF antenna and a single Hi-VHF or Lo-VHF antenna, this combiner can be mounted directly to a mast using the all-weather adjustable mounting hardware, and the plastic enclosure protects the diplexer and its connections from corrosion. Coaxial cable not included. Helpful tip: The DC power pass on the UHF port allows for UHF-only amplification in special circumstances, for example, when UHF signals require amplification and VHF signals do not. Details: Dimensions: 4.2"H x 5.5"W x 1.5"D; Weight: 5.44 oz.; Insertion loss: Lo-VHF-IN/OUT 54-88 MHz 0.5 dB; Hi-VHF 174-216 MHz 0.5 dB; UHF-IN/OUT 470-698 MHz 0.8 dB; Return loss: Lo-VHF IN/OUT 54-88 MHz 18 db; Hi-VHF 174-216 MHz 18 dB; UHF 470-698 MHz 12 dB; Isolation: VHF-UHF 54-698 MHz 30 dB; Compatibility: Indoor, Outdoor, Attic use with UHF, Hi-VHF, and Lo-VHF antennas; RG6 and RG59 coaxial cable only (not included) - the plastic enclosure will not accept larger diameter coaxial cable such as RG11; Features: DC Power Pass on UHF Port; All-weather plastic enclosure; Includes: combiner, all-weather enclosure, adjustable mounting hardware, installation instructions. 90-day accessory warranty. Antennas Direct has helped millions of people cut the cord since 2003. As the pioneers who reinvented the digital TV antenna industry, we believe that high-quality TV antennas can and should deliver performance and reliable reception of your free broadcast TV signals at an affordable price.