This is a terrestrial digital TV antenna for areas with strong electric fields. It can also be used in areas with moderate electric fields by installing it outdoors. It achieves high performance with a compact design and soft casing lines. It can be installed both indoors and outdoors using the included stand and mast holding金具. It can also be mounted on indoor walls using commercially available wood screws. Compatible mast diameter for included金具: φ22～48.6mm It has a built-in booster to suppress the deterioration of radio wave quality and compensate for losses from long cables and splitters. The waterproof cap allows cables (4C/5C) to pass through without modification.