ANTOP "Big Boy" AT-400B Outdoor/Indoor HDTV Antenna | Smartpass Amplified

$198.99 $119.99

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  • New Generation digital tech design: matches mechanical antennas
  • UV coating, weather resistant finish
  • Whole-house solution: Can feed multiple TVs
  • Smartpass technology amplifies range from 0, 65 to 80 miles
  • 4G LTE Filter: blocks unwanted 3G and 4G signals
  • Multi-directional reception for weak signal strength areas
  • Easy home exterior installation: desktop, wall, roof, balcony
  • Size: 10.24 X 4.72 X 23.46 inch

283 in stock (can be backordered)

    AT-400B description


    Outdoor HDTV Antennas Redefined Bringing beautiful design, new digital tech and crystal-clear TV reception to your home.

    Meet the ANTOP “Big Boy” Outdoor Antenna AT-400B

    The perfect combination of classic Yagi engineering and the new digital technology.
    Stylish and sleek, keeps you connected to all the local TV content you want.
    AT-400B description

    Enjoy a lifetime of free HDTV family entertainment.

    AT-400B description
    AT-400B description

    Smartpass Amplified

    with Built-in 4G/LTE Filter

    The ANTOP exclusive, all-in-one Smartpass Amplifier balances the range for “Big Boy” AT-400B from 0, 65, to 80 miles, and blocks unwanted 3G/4G signals for noise-free reception.
    AT-400B description

    Simple Set-up

    The simple set-up design enables you to quickly install and easily connect within minutes. The “Big Boy” offers an installation kit and table top stand for multiple positioning options.
    AT-400B description

    Durable Exterior & Weather Resistant

    UV coated, weather resistant exterior design combined with anti-interference internal tech
    protects signal reception to provide clear pictures and full channel capacity even during inclement weather.
    AT-400B description

    Always connected so you never miss the latest local news

    The ANTOP Flat Panel “Big Boy” is the easiest way to get a wide range of free HDTV channels.
    Plug and play. Enjoy crystal-clear TV reception.
    AT-400B description

    Stylish Design

    Flat Panel “Big Boy”, exactly what you need and nothing you don’t. Its sleek and compact blends in with the interior or exterior of your home.
    AT-400B description


    Combining style and the latest in digital antenna tech to create a crystal-clear HDTV viewing experience.
    AT-400B description

    A Keeper

    Engineered to pick up channels in difficult reception areas and powerful to feed multiple TVs throughout your home.
    What's in box
    AT-400B Description



    Indoor, Outdoor, Attic, RV

    Signal Strength

    Weak Signal Areas

    Received Band

    HI-V, UHF


    Smartpass Amplified

    Reception Pattern


    Frequency Range

    87.5-230MHz, 470-700MHz


    14dB or 30dB

    Max Output level


    Noise Figure




    Power Supply

    DC12V via power adapter

    Cable Length


    Product Series

    "Big Boy"

    Working Temperature Range

    -104 to 140 ℉

    Wind Figures

    6 mile/h = 0.69N ; 10 mile/h = 2.49N






    Weight9.31 lbs
    Dimensions10.8 × 6.50 × 22.44 in
    ANTOP User Manual
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