Maspro UHF/BS/CS TV/Recorder Booster UBCTRW30-P - Unopened. This booster is used when TVs don't display clearly, such as when distributing the signal to a recorder. It's a 30dB type for terrestrial digital broadcasting and also amplifies satellite broadcasts. It provides a 2-way output for TV and recorder. Although it is a new, unopened item, the package has some minor damage and scratches. Thank you for your interest.