This digital TV antenna is fitted with an LTE/4G filter which protects your TV from mobile broadband interference. It also features adjustable gain as well as telescopic dipoles and an adjustable loop aerial for optimal performance. Specifications: Max Output: 90dBuV Max Noise: 1.5/1.8dB (VHF/UHF) Frequency: VHF: 174-230MHz / UHF: 470-694MHz