ANTOP AT-401B Flat-Panel Smartpass Amplified Outdoor/Indoor TV Antenna with High Gain and Built-in 4G LTE Filter -60/70 Miles Long Range Multi-Directional Reception - 40ft Detachable Coaxial Cable NEW Open Box Redesigned to match similar gain of traditional bulky, unsightly mechanical antennas, the AT-401B with multi-direction, High Gain reception and Smartpass Technology amplifies your range, from 0, 60 and 70 miles from broadcast origination source! Assuring you more channel reception and less blind spots. FEATURES: Digital technology allows High Gain reception Built in 4G LTE Filter blocks unwanted 3G/4G interference Smartpass Amplifier System, for balanced short & long range reception Quick & Easy Install, Set-Up Perfect for indoor, outdoor & mobile use Sleek durable design, anti UV & waterproof exterior TECHNICAL SPECIFICATION Frequency Range: 87.5-230MHz, 470-700MHz Receiving Range: VHF/UHF Gain: 12.5dB or 29dB Max Output level: 100dBuV Impedance: 75Ω Noise figure: ≤2.5dB Reception Pattern: Multi-directional Polarization: Horizontal/Vertical Smart Switch - Off: non-amplified Smart Switch - On: amplified with DC 12V via power adapter ANTOP’s Exclusive Smartpass Amplifier System & 4G/LTE Filter SMARTPASS AMPLIFIER SYSTERM - No hesitation any more on deciding between a short range and long range antenna! ANTOP’s Smartpass Amplifier System, an exclusive technology offered only by ANTOP, uses an all-in-one design to allow an easier connection and more possibilities in different receiving ranges. - Switch-off: Yellow light indicates short range reception - Switch-on: Green light indicates long range reception 4G/LTE FILTER – ANTOP was the first antenna manufacturer to include a built in filter to block 3G and 4G wireless signals to ensure noise-free digital TV reception.