Terrestrial Digital, BS/CS Booster TV Amplifier Amplifier 470～2610MHz amplifier, ultra-high gain booster BS4K8K right/left polarization compatible! (Only Sky PerfecTV 4K8K not supported) Manufacturer: DX Antenna Model Number: CU33-L2 470～710MHz Gain 27～33MHz (Terrestrial Digital UHF band) 1032～2610MHz Gain 22～33MHz (BS/CS-IF/4K8K right/left polarization band) Operation checked!! Operation check performed with a UHF antenna 4K8K right/left polarization wave compatible!! Partially unsupported (Only 4K Sky PerfecTV not supported) Regular Sky PerfecTV is supported! Reason for 4K8K compatibility The highest frequency used in BS4K8K is NHK 8K's 2471.82MHz This booster supports up to 2610MHz, which is within the permissible range, so it can be used. Also, since Sky PerfecTV 4K8K uses 2926～3206MHz, it is not supported. Also, right/left polarization waves are relevant for parabolic antennas, and a dedicated antenna is required, but boosters are not concerned with right/left polarization waves such as right or left. It's all about the frequency band. Therefore, it supports right/left polarization waves. Only those who know will benefit!! ■A 4K8K booster is required to watch all 4K8K channels ■This is a used item, so there may be some scratches or dents. Please purchase only if you prioritize performance.