Thank you for viewing. The Nippon Antenna N7D352 has a gain of 35dB and a maximum output of 113dB, making it a large, professional-grade device. It is equipment used in communal viewing facilities such as apartments. Unlike household boosters, it is robustly built and perfectly shielded. Although it is for CATV/BS-CS IF, CATV uses VHF/UHF bands, so it can also be used at home as a regular FM/VHF/UHF booster. The reason it is labeled for CATV is that it has an upstream signal amplification function for 10-55MHz CATV. Please understand that this is a used item.