360 degree adjustable directional antenna. Strong performance across (channels 2-69) best for UHF spectrum (21-69). Versatile high gain multi - bay antenna. Efficient design allows tremendous gain in a compact size. Designed to resist extreme wind loading. Works great in attics. Fits easily and high gain can help overcome loss from roofing materials. All weather Balun included. Great within 70 miles or more from transmitters. Intended for people at great distances from the transmitters. Excellent reception for digital terrestrial. Suitable for HDTV of various television standards, such as American ATSC, European DVB, etc. Super strong design suitable for all kind the weather. Specifications:. No. of Elements: 8. Frequency Range: 470-862MHz. Channels: Ch. 21-69. Antenna Gain: 17-22dB. Beam Width H/V: H 60/ V32. Front-back Ratio: 22 dB. Impedance: 75O. Antenna Length: 840mm. Type of Frequency: VHF, UHF. Dimensions: 33"D x 21.5"W x 4"H.