UHF BS-CS Booster, USB Power, Adjustable - Model Name: UBCTRW30 - Brand: MASPRO - Function: UHF BS-CS Booster - Connection Ports: BS-CS, UHF - Adjustment Function: MIN/MAX adjustment dial - Power: USB connection I was using this until recently, but for some reason, the picture quality improved when I removed it, so I'm selling it. It has normal signs of use, so please refrain from purchasing if you are overly concerned about condition. No returns or exchanges except for initial operational defects. Thank you for looking.