ANTOP Flat Panel “Big Boy” Outdoor HDTV Antenna | Smartpass Amplified

Rated 4.75 out of 5 based on 4 customer ratings
(4 customer reviews)

$268.99 $142.99

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1 Year Parts & Labor Warranty

• New Generation digital tech design: matches mechanical antennas
• Enhancer Rods to strengthen VHF reception
• UV coating, weather resistant finish
• Whole-house solution: Can feed multiple TVs
• Smartpass technology amplifies range from 0, 60 to 70 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: 22 X 10 X 4.7 inch

378 in stock (can be backordered)


AT-400BV outdoor antenna


  • Enjoy TV shows without subscription and monthly fee.
  • Receives free broadcast High Definition Over-the-Air TV signals such as ABC, CBS, NBC, PBS, Fox, Univision and others.
  • Compatible with TV converter boxes or digital televisions/4K Ultra High Definition (4K UHD) TVs.
  • Designed to match similar gain of traditional bulky, unsightly mechanical antennas with an amplified signal reach of range from 0, 60 to 70 miles from point of origination.



The ANTOP Flat-Panel AT-400BV is aesthetically pleasing and suitable to match a wide range of home exterior styles. The Multi-directional reception, UV coating and weather resistant finish and creative panel design, allow you to install your AT-400BV, the digital tv antenna in various locations around the exterior of your home: wall, roof, balcony. It is also suitable for indoor use in an attic or placed on a table top. The AT-400BV supports HDTV, 1080P TV and 4K ULTRA HD.

ANTOP’s New Generation Digital Technology

smartpass amplifierSmartpass Amplifier, exclusive ANTOP technology, balances reception range.

The Smartpass Amplifier’s all-in-one design allows easier connection, delivers correct balance between short and long range reception. It must be powered in order to function. Push the smart switch On or Off and select the switching with which more channels are received.

4G LTEBlocks 3G and 4G wireless signals for noise-free digital reception.

– High Gain reception technology, shielded for minimum interference.
– Durable exterior, waterproof design with UV coating.
– Supports VHF & UHF digital signals.
– Mounting accessory options.

By following the simple tips below, you can enjoy FREE TV with your ANTOP Antenna:

– Re-scan the channels after each switching of the Smart Switch.
– Scan channels monthly to find all available channels including newly added or changed.
– Do not place or hide the antenna in/behind any metallic objects.
– Install the antenna as high as possible and near a window for better reception.
– Keep the antenna away from any high power consumption devices to avoid interference.

NOTE: Antenna effectiveness is influenced by the distance from signal origination point, station signal strength, antenna positioning, reflections from nearby structures and any power consumption sources. THE AMOUNT OF FREE OVER-THE-AIR CHANNELS YOU CAN RECEIVE WILL VARY BY AREA AND ANTENNA SELECTION, CHECK SIGNAL AVAILABILITY AT FCC.GOV.

What’s in the box

– AT-400BV FLAT PANEL Smartpass Amplified Digital Outdoor/Indoor TV Antenna
– Power Inserter with Smart Switch
– AC/DC Power Adapter
– Indoor Stand
– 39ft Coaxial Cable
– Wall/Pole Mounting Bracket
– Instruction/User Manual
– Instrucciones de Instalación en Español




Indoor, Outdoor

Signal Strength

Weak Signal Areas

Reception Pattern



Smartpass Amplified

Frequency Range

87.5-230MHz, 470-700MHz


Switch-OFF: 10dB; Switch-ON: 33dB

Max Output level




Power Supply

DC12V via power adapter

Cable Length




Product Series

Flat Panel


Weight148.1 oz
Dimensions10.82 x 6.49 x 22.44 in
Share your thoughts!
4.75 out of 5 stars

4 reviews

Let us know what you think...

What others are saying
  1. 5 out of 5 400BV AntennaW

    We have discontinued Cable TV because of the quality of this antenna. This antenna is pulling in stations that are within a 180 degree arc from our home. I have it aimed toward the center point of most stations from our home. We needed an antenna strong enough to pull in stations 35 miles away, at a minimum. We live in Seminole, FL and capture stations from Clearwater, Sarasota and Tampa without any issue. I was all prepared to mount this antenna on our on our roof. However, just for kicks, I placed the antenna in our attic, which took all of ten minutes. We receive 56 crystal clear stations from the attic. I see no reason to mount the antenna on the roof at this point. Being satisfied with this antenna would be an understatement. Goodbye cable TV! You must order the Antop cable splitter as well. The splitter allows for powering up the amplifier, which powers the antenna. The power connection is easily hooked up behind any TV and plugs into the wall outlet or power strip. You don’t need power in the attic or outside. In addition, the existing cables running to you various TV’s must not share the same cable run used for Internet service. So, unless you have a separate cable line for Internet, you will need to have your internet service provider install a designated line. Most cable companies will install that designated service line for free, provided you have signed up for their service plan. The other option would be to switch Internet service providers and capture a much lower monthly rate fee, plus have the new provider install a separate Internet only line. Buy this antenna!!!


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  2. 5 out of 5 It works great.

    It works great. I live in a community where most TV is provided by satellite or cable. This product enabled me to reliably receive 20+ stations from all the major networks which are more than 65 miles away.


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  3. 4 out of 5 I am pleased overall.

    Worth purchase! I wish it didn’t cost quite this much, but I am pleased overall. I was able to pick up 27 channels indoor and 41 when placed outdoor. The important thing is I was able to reach the one channel I really wanted which with other antennas I could not reach.


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  4. 5 out of 5 Picture is crystal clear! Recommend!

    This is the first outdoor antenna I tried. It worked greater than other indoor antennas. I was able to get all the channels I wanted and happy that the picture is crystal clear! I would recommend this item to my friends.


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