Monster HD ATSC Off-Air AntennaSMD technologyMultiple reflector design for stronger signalStrong performance across (channels 2-69) best for UHF spectrum (21-69)Efficient design allows tremendous gain in a compact sizeDesigned to resist extreme wind loadingWorks great in atticsFits easily & high gain can help overcome loss from roofing materials. All weather Balun included Great within 70 miles or more from transmittersIntended for people at great distances from the transmittersExcellent reception for digital terrestrialSuitable for HDTV of various television standards, such as American ATSC, European DVB, etc.Super strong design suitable for all kind weatherSpecifications:No. of Elements: 43Frequency Range : 470-862MHz Channels: Ch. 21-69Antenna Gain: 9.5-15dBBeam Width H/V: H 60/ V32Front-back Ratio: 28 dBImpedance: 75ΩAntenna Length: 1045mm