Best TV Antenna for Basement Apartment – Reviews & Guide 2026

Picture a Saturday morning in a basement apartment: the lease is signed, the furniture is arranged, but the cable bill sitting on the counter feels like a monthly penalty for simply watching television. For the millions of renters living in below-grade units across the country, over-the-air antenna reception offers a genuinely compelling alternative to paid subscriptions — provided the right hardware makes it past the concrete and rebar standing between the living room and the nearest broadcast tower.

Basements present a uniquely demanding reception environment that most standard indoor antennas are not engineered to handle with consistency. Reinforced concrete walls, subterranean positioning, limited egress window access, and the electromagnetic interference generated by appliances and HVAC equipment all conspire to degrade signal strength before it ever reaches the tuner. The shift to digital television broadcasting has made signal quality an all-or-nothing proposition — channels either lock in cleanly or drop entirely — which means that choosing a marginal antenna for a basement environment can leave buyers with a frustratingly thin channel lineup. Amplification, multi-directional element design, and strategic placement near basement windows are the three variables that consistently separate functional installations from failed ones. For anyone building out a full home entertainment system, the audio and video equipment category contains additional gear reviews worth exploring alongside this guide.

This 2026 guide covers seven of the strongest performing TV antennas for basement apartments, evaluated against the specific challenges of below-grade reception: signal penetration through dense building materials, range adequacy when towers are partially obstructed, amplifier quality under real-world interference conditions, and form factors compact enough for the limited wall and window space that basement units typically offer. Buyers focused on distributing signal to multiple TVs, or those who want app-guided optimization tools, will find dedicated picks in the lineup below. For context on related signal distribution technology, the review of the best MoCA adapters provides a useful companion read for anyone considering a whole-home OTA setup routed through existing coaxial wiring.

Editor's Recommendation: Top Picks of 2026

• #
  Preview
  Product
  Rating
• Bestseller No. 1
  
  Mohu Leaf 50 Original Paper-Thin Indoor TV Antenna, UHF VHF, 60-Mile Range, Multi-Directional, 4K 8K UHD NEXTGEN TV - w/12 ft. Cable, Jolt Switch
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• Bestseller No. 2
  
  Mohu Leaf Amplified – Ultra-Thin Indoor TV Antenna, 60-Mile Range, Jolt Switch Amp, UHF VHF, Multi-Directional, 4K UHD, NEXTGEN TV - w/ 12 ft. Cable
  Rating:

  
  
• Bestseller No. 3
  
  Winegard FL5500A FlatWave Amped Digital HD Indoor TV Antenna – Amplified, 4K & ATSC 3.0 Ready, High-VHF/UHF, 60 Mile Range, Dual Color, 6 ft Cable
  Rating:

  
  
• Bestseller No. 4
  
  Antennas Direct ClearStream Eclipse Amplified UHF Indoor TV Antenna, Reversible, 50+ Mile Range – w/ 12 ft. Cable, Jolt Switch USB Amplifier
  Rating:

  
  
• Bestseller No. 5
  
  Antop AT-800SBS HD Smart Panel Antenna with Smart Boost System, VHF Enhanced Amplified Indoor Outdoor TV Antenna，Support 2TVs or A Second Device
  Rating:

  
  
• Bestseller No. 6
  
  Winegard FlatWave Amped Pro HDTV Indoor TV Antenna – Bluetooth Signal Meter, Integrated Channel Finder, Up to 60 Mile Range, TH-3000
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• Bestseller No. 7
  
  Channel Master Omni+ 50 - Omnidirectional Digital HDTV Antenna with 360 Degree Reception, Includes Mounting Bracket for Roof, Attic & RV Installations, Indoor/Outdoor (50 Mile Range)
  Rating:

  
  

In-Depth Reviews

1. Mohu Leaf 50 Original Paper-Thin Indoor TV Antenna — Best Overall

The Mohu Leaf 50 Original has held its position as a benchmark indoor antenna for nearly a decade, and the current version equipped with the Jolt Switch amplifier demonstrates why that reputation has proven so durable. The paper-thin form factor — measuring just 10 inches high by 11.5 inches wide at 0.04 inches thick — allows basement dwellers to position the antenna flush against a window frame or egress window surround without occupying any meaningful visual real estate, and the reversible black-and-white design means it can be painted to blend with existing décor. Multi-directional UHF and Hi-VHF elements eliminate the need to aim the antenna toward a specific tower cluster, which matters considerably in basement environments where obstructed sightlines often prevent conventional directional setups from performing reliably.

The Jolt Switch 18 dB USB-powered inline amplifier is the feature that elevates this antenna above its non-amplified sibling in basement installations specifically. Rather than running amplification at a fixed gain level, the Jolt Switch allows users to toggle the boost on and off in real time, which proves useful when signal conditions change throughout the day — a critical capability given the multipath interference patterns common to below-grade spaces. Reception covers full HD 1080p and extends to 4K and 8K UHD broadcasts as well as NEXTGEN TV channels where available, and the included 12-foot coax cable provides enough reach to experiment with positioning across different wall and window locations before committing to a permanent mount. The 60-mile rated range, while achievable under ideal conditions, realistically translates to dependable reception from towers in the 30-to-45-mile range when basement attenuation is factored in.

The Mohu Leaf 50 Original represents the clearest all-around choice for basement apartment buyers who want a proven, adjustable amplification solution without overpaying for smart features they may not need. The combination of ultra-thin profile, switchable gain, multi-directional reception, and a well-established track record of real-world basement performance makes this the default recommendation for most setups entering 2026.

Pros:

• Jolt Switch toggleable amplification allows real-time signal management in variable basement conditions
• Ultra-thin 0.04-inch profile fits flush against window frames and egress surrounds without visual intrusion
• Multi-directional UHF and Hi-VHF elements eliminate the need for manual aiming
• Reversible and paintable design adapts to any basement décor scheme
• 12-foot cable provides adequate reach to test multiple placement positions

Cons:

• Real-world 60-mile claim should be treated as approximately 30-45 miles in true basement conditions
• USB power requirement means a spare USB port or adapter must be available near the installation point

2. Mohu Leaf Amplified Ultra-Thin Indoor TV Antenna — Best Upgrade Pick

The newer Mohu Leaf Amplified represents Mohu's current-generation refinement of the Leaf platform, arriving in a contemporary grey low-profile form factor that positions more naturally against modern window frames and painted drywall than the older reversible black-and-white design. The antenna shares the core Jolt Switch inline USB amplifier architecture with the Leaf 50 Original, delivering the same real-time switchable 18 dB gain boost that makes amplified basement installations practical without locking users into maximum amplification when nearby towers are close enough to introduce overload distortion. At 9.25 inches high by 11.38 inches wide, the footprint is marginally smaller than the Original, which can matter in basement apartments where window openings and clear-line-of-sight placement spots are genuinely scarce.

Multi-directional UHF and Hi-VHF element coverage ensures that signals arriving from different compass directions — a common scenario in urban basement apartments surrounded by towers from multiple broadcast clusters — are captured without requiring the user to choose a fixed orientation. Full HD 1080p, UHD 4K, 8K, and NEXTGEN TV compatibility makes this antenna future-proof against the ongoing ATSC 3.0 rollout, and the USB-powered amplifier draws power directly from the television, eliminating the need for an additional wall outlet near the mounting position. The 12-foot coaxial cable matches the Original's reach, providing sufficient flexibility for installation experimentation.

Buyers choosing between the Leaf 50 Original and the Leaf Amplified will find the performance ceiling essentially identical — the primary differentiators are aesthetic, with the Leaf Amplified's grey colorway and updated profile making it the stronger choice for well-decorated basement spaces where the Original's reversible white-or-black finish would stand out. Both models earn strong marks for basement apartment use, and buyers who value a contemporary appearance alongside the proven Jolt Switch amplification system will find the Leaf Amplified worth the modest premium over the older model.

Pros:

• Contemporary grey finish integrates more cleanly into modern basement apartment interiors
• Jolt Switch USB amplifier provides switchable 18 dB gain with direct TV-powered operation
• Slightly smaller footprint aids placement in window-constrained basement environments
• Full NEXTGEN TV and 4K/8K UHD compatibility ensures long-term broadcast format support

Cons:

• Slightly higher price point than the Original for functionally equivalent performance
• Grey colorway lacks the reversible customization flexibility of the original black-and-white design

3. Winegard FL5500A FlatWave Amped Digital HD Indoor TV Antenna — Best Value

Winegard's FL5500A FlatWave Amped distinguishes itself from the amplified flat antenna crowd through its embedded Clear Circuit Technology amplifier, which achieves a noise figure of just 1.0 dB — one of the lowest in its class and a specification that translates directly into cleaner signal recovery in weak-signal basement environments. Most budget-tier amplified antennas sacrifice noise figure for headline gain numbers, which produces a louder but dirtier signal that the television's tuner then struggles to lock onto reliably. The FL5500A's approach of prioritizing low-noise amplification over raw gain is precisely what basement reception scenarios demand, where signal is rarely absent entirely but is consistently degraded by the surrounding structure.

The FL5500A ships with an 18.5-foot coaxial cable — notably longer than the 12-foot cables included with the Mohu options — which provides substantially more installation flexibility for basement apartments where the optimal reception point near a window may be a considerable distance from the television. Dual-band UHF and VHF coverage is handled through the embedded amplifier powered by an energy-efficient USB supply with an LED status indicator, and the dual-color design (black on one side, white on the other) mirrors the reversible aesthetic approach that basement dwellers appreciate for blending the antenna against varied wall backgrounds. The 60-mile rated range applies to ideal conditions, but the low noise figure ensures this antenna extracts maximum usable signal from whatever penetrates the basement envelope.

At its typical street price, the FL5500A FlatWave Amped delivers a combination of professional-grade noise figure performance, generous cable length, and a clean reversible profile that competes directly with antennas sold at significantly higher price points. Buyers who have struggled with other amplified flat antennas and attributed their failure to signal weakness may find that the actual culprit was amplifier noise — and the FL5500A's 1.0 dB noise figure addresses that problem definitively.

Pros:

• Industry-leading 1.0 dB amplifier noise figure produces exceptionally clean signal recovery in attenuated environments
• 18.5-foot coaxial cable provides superior installation reach compared to competing 12-foot options
• Reversible dual-color design accommodates varied basement wall and window frame finishes
• USB-powered with LED status indicator for straightforward setup and monitoring

Cons:

• Fixed amplification level without the toggleable gain control found on Jolt Switch-equipped models
• Slightly bulkier profile than the thinnest competing flat antennas on the market

4. Antennas Direct ClearStream Eclipse Amplified UHF Indoor TV Antenna — Best Compact Design

The Antennas Direct ClearStream Eclipse Amplified stands apart from the standard flat panel category through its signature patented loop element design, which concentrates UHF reception performance into a smaller physical footprint — just 10.1 inches high by 8.6 inches wide — that fits more comfortably in the narrow egress window frames and tight window well openings that characterize many basement apartment layouts. The loop design is not merely aesthetic; it provides a degree of natural directional focus on UHF signals while the paper-thin construction maintains the wall-mount profile that basement installations demand. The addition of the Jolt Switch 18 dB USB inline amplifier in this current edition gives users the same real-time switchable gain control found on the Mohu Leaf lineup, which proves especially valuable when multipath reflections from basement walls cause reception quality to fluctuate throughout the day.

NEXTGEN TV, 4K UHD, 8K UHD, and Full HD 1080p compatibility is built into the receiver element design, and the compact Jolt Switch amplifier sits inline on the coax run rather than at the antenna body itself, keeping the visual profile of the mounted antenna clean and uncluttered. The overall form factor makes the Eclipse Amplified one of the better options for basement apartments with restrictive window placement options, where larger flat panels simply cannot be positioned at the egress opening that represents the clearest RF pathway to outdoor broadcast towers. No internet connection is required for any functionality, which aligns with the fundamental appeal of OTA reception as a zero-subscription-cost television solution.

The ClearStream Eclipse Amplified earns its place on this list for buyers whose basement layout genuinely restricts them to small mounting surfaces near window wells or high-mounted basement windows. The loop element's compact 8.6-inch width and the Jolt Switch's adjustable amplification combine to make this the most placement-flexible amplified antenna in the lineup, delivering reliable UHF reception from a form factor that fits where others cannot.

Pros:

• Signature loop element design concentrates UHF performance into one of the narrowest form factors in the amplified antenna category
• Jolt Switch inline amplifier provides real-time toggleable 18 dB gain without cluttering the mounted antenna profile
• 10.1" x 8.6" footprint fits window well openings and narrow basement window frames that eliminate competing options
• Full NEXTGEN TV and 4K/8K compatibility with no internet dependency

Cons:

• UHF-focused loop design may underperform on Hi-VHF channels compared to full dual-band flat panel competitors
• 50+ mile range claim is more conservative than some competing 60-mile rated options

5. Antop AT-800SBS HD Smart Panel Antenna with Smart Boost System — Best for Dual TV Support

The Antop AT-800SBS occupies a category of its own among the picks reviewed here, offering a Smart Boost System with a built-in dial that adjusts amplifier strength across a 0-to-85-mile reception range rather than locking users into a fixed gain level or a simple on/off toggle. For basement apartment installations where the precise amplification sweet spot may require calibration over multiple channel scans, the continuous dial adjustment provides a level of fine-tuning that binary amplifiers cannot match. The variable range adjustment proves particularly useful when the antenna is positioned near a window well that has partial sky exposure but substantial multipath interference from nearby structures — a scenario that demands nuanced gain management rather than maximum amplification.

The dual connectivity feature is the AT-800SBS's most distinctive capability: a secondary output on the Smart Boost System allows simultaneous connection to a second television, FM stereo receiver, or OTA-ready streaming device, making this the only antenna in the lineup that natively supports a two-TV household without requiring a separate splitter and its associated signal loss. A built-in 4G LTE filter actively blocks 3G and 4G wireless interference, which is a meaningful advantage in basement environments where cell signal from neighboring infrastructure can introduce interference artifacts. The panel form factor is larger than the flat antennas reviewed above, but it mounts cleanly against a wall or window and supports VHF and UHF reception with full 4K HDTV compatibility across its reception range.

Basement apartments in multi-TV households gain more from the AT-800SBS than from any other antenna in this roundup, and the Smart Boost dial eliminates the trial-and-error amplification management that makes binary-amplified antennas frustrating to optimize in challenging signal environments. The LTE filter is a genuine bonus for basement dwellers in dense urban areas where wireless interference is a persistent background noise source rather than an occasional annoyance.

Pros:

• Variable dial amplification from 0 to 85 miles allows precise signal-level calibration without channel scan iteration
• Dual output natively supports two televisions or a TV plus FM stereo without a separate splitter
• Built-in 4G LTE filter actively suppresses cellular interference that plagues basement installations in urban environments
• Compatible with FM stereo, OTA-ready streaming devices, and projectors via the secondary output

Cons:

• Larger panel form factor is less discreet than ultra-thin flat antenna alternatives for minimal-footprint installations
• Smart Boost dial requires manual calibration; lacks the app-guided optimization that more advanced models provide

6. Winegard FlatWave Amped Pro HDTV Indoor TV Antenna — Best Smart Antenna

The Winegard FlatWave Amped Pro TH-3000 brings a level of installation intelligence to basement antenna setup that no other pick in this roundup can match, integrating Bluetooth connectivity and a companion app that guides placement decisions based on real-time signal meter readings rather than the trial-and-error repositioning that characterizes every other option on the list. For basement dwellers whose only viable reception spot is a narrow egress window or a high half-window near the ceiling, the ability to walk the antenna to different positions while monitoring live signal strength on a smartphone screen eliminates the repeated trips between the antenna mounting location and the television that make optimization so time-consuming without this tool. The integrated channel finder functionality processes location data to identify which channels are realistically receivable from the antenna's current position, setting accurate expectations before the channel scan runs.

The amplification system boosts weak signals and actively suppresses the pixelation artifacts that manifest when a digital tuner struggles to maintain lock on a marginal input, which is precisely the failure mode that basement installations encounter most frequently. Reception of the major free broadcast networks — ABC, CBS, FOX, NBC, PBS, and their digital subchannels — in full HD is the primary use case the TH-3000 is optimized for, and the amplifier's signal processing handles the multipath interference environment of concrete-enclosed spaces more gracefully than simpler amplified flat panel competitors. The 60-mile rated range applies to the amplified reception ceiling, with effective basement performance generally reliable within the 25-to-50-mile band depending on structural attenuation.

The FlatWave Amped Pro is the definitive choice for buyers who have previously installed antennas in a basement apartment and been disappointed by the results — the Bluetooth signal meter removes the guesswork that typically prevents users from finding the optimal placement position within a constrained space. It carries a higher price than the other flat antennas reviewed here, but the placement optimization capability delivers measurable channel count improvements over guesswork-based installations and represents a sound investment for anyone committed to maximizing their OTA lineup.

Pros:

• Bluetooth signal meter and companion app enable real-time, walk-around placement optimization that definitively solves basement positioning uncertainty
• Integrated channel finder sets realistic channel expectations based on actual position rather than theoretical range
• Amplified signal processing reduces pixelation artifacts in marginal-signal basement conditions
• Receives all major free HD broadcast networks without subscription or internet dependency

Cons:

• Premium price point represents a meaningful step up from the other flat antenna options in this roundup
• Bluetooth app dependency adds a setup step that buyers seeking the simplest possible installation may find inconvenient

7. Channel Master Omni+ 50 Omnidirectional Digital HDTV Antenna — Best Omnidirectional Option

The Channel Master Omni+ 50 approaches basement antenna installation from a fundamentally different architectural premise than the flat panel options reviewed above: rather than relying on multi-directional flat elements positioned against a window, this omnidirectional antenna delivers a full 360-degree reception pattern from a compact dome form factor designed to mount to a wall, mast pole, or existing satellite mount bracket. For basement apartments with exterior-facing utility areas, sunken patios, or accessible window wells that allow short cable runs to an exterior mounting point, the Omni+ 50's outdoor-capable design makes it the most powerful long-range solution in the lineup. The antenna maintains compatibility with all HDTV and 4K TV models and captures signals from all compass directions simultaneously without any manual adjustment or aiming requirement.

The 50-mile omnidirectional range rating is meaningful in the context of basement installations that have access to even a partial exterior mounting location — a window well exterior wall, a recessed stairwell opening, or a ground-level patio — because the elimination of concrete attenuation through even a short cable run to an external position dramatically improves the effective signal budget available to the tuner. The included mounting bracket accommodates wall mounting, mast pole attachment, and repurposing of existing satellite dish infrastructure, giving installation-flexible buyers multiple routing options. Channel Master's established reputation for professional-grade OTA reception hardware backs the Omni+ 50's design, and the 360-degree element pattern means signal quality remains consistent regardless of tower orientation relative to the mounting position.

The Channel Master Omni+ 50 earns particular consideration from basement dwellers who have exhausted indoor placement options and are willing to route a short coaxial cable to an accessible exterior surface. In that configuration, this antenna's omnidirectional design and outdoor-rated durability transform a previously frustrating basement reception situation into a reliable multi-channel lineup without the directional aiming and repositioning limitations that constrain every flat indoor antenna in challenging environments. Buyers who already own an unused satellite dish mount have an immediate ready-made solution available without any additional hardware investment.

Pros:

• 360-degree omnidirectional reception eliminates directional aiming requirements regardless of tower orientation
• Outdoor-rated construction enables exterior mounting that bypasses basement concrete attenuation entirely
• Compatible with wall, mast pole, and existing satellite dish mount brackets for flexible installation routing
• 50-mile range from an exterior mounting position delivers channel counts that indoor basement antennas cannot match

Cons:

• Exterior or semi-exterior mounting access is required to realize the full performance advantage over indoor flat panel competitors
• Larger dome form factor and mounting hardware are not suitable for pure indoor basement window installations

What to Look For When Buying a TV Antenna for a Basement Apartment

Amplification Quality Over Raw Gain Numbers

The single most important specification for a basement antenna is not the headline range rating but the quality of the amplification circuit. High-gain amplifiers with poor noise figures amplify interference and signal degradation alongside the desired broadcast signal, producing a result that the television's tuner cannot reliably decode into a stable picture. The specification to scrutinize is the amplifier's noise figure — measured in decibels, lower is better — because this number determines how much additional noise the amplifier introduces into the signal chain. A 1.0 dB noise figure, as found in the Winegard FL5500A's Clear Circuit Technology, delivers materially cleaner signal recovery than the 3-to-5 dB noise figures common in budget amplified antennas. In basement environments where signal is already attenuated by 10 to 20 dB relative to above-grade installations, a low-noise amplifier is not an optional luxury — it is the deciding factor between a stable channel lineup and unreliable reception.

• Prioritize noise figure (dB) over gain (dB) when comparing amplified antenna specifications
• Switchable amplification (Jolt Switch-style) prevents overload distortion when antenna is positioned close to a tower
• Variable gain dials (as on the Antop AT-800SBS) provide the most precise optimization for complex basement signal environments
• Fixed-gain amplifiers at maximum setting can degrade reception when signal input exceeds the amplifier's dynamic range

Placement Strategy in Below-Grade Environments

Even the highest-performing antenna in this roundup delivers diminished results when placed in the wrong position within a basement apartment. Concrete and steel construction attenuates RF signals by 10 to 20 dB or more, which means that the distance between the antenna and the nearest window, egress opening, or exterior wall determines available signal budget more directly than the antenna's range rating. The optimal placement strategy begins with identifying every window, egress opening, and exterior wall surface in the basement, then testing the antenna systematically at each location while running a channel scan — or, for buyers using the Winegard FlatWave Amped Pro, monitoring real-time signal strength through the Bluetooth companion app. Antennas positioned within 12 inches of a glass surface, even a small egress window, consistently outperform the same antenna placed 6 feet deeper into the basement interior across all signal environments tested. Buyers who find that no window position yields acceptable results should evaluate the Channel Master Omni+ 50 for exterior mounting access, or explore signal distribution options such as those covered in the FM antenna placement guide for the Bose Wave Radio, which covers many of the same RF propagation principles applicable to OTA television reception.

Form Factor and Mounting Compatibility

Basement apartments impose more severe form factor constraints on antenna selection than any other residential installation environment. Standard window space is limited, egress openings have fixed dimensions that may not accommodate larger flat panel designs, and the absence of attic access eliminates the elevated interior placement positions that deliver strong results in above-grade homes. Ultra-thin flat panel antennas in the 0.04-inch profile range, such as the Mohu Leaf lineup and the ClearStream Eclipse, mount flush against window glass or frame surfaces without occupying meaningful depth, making them the default form factor recommendation for space-constrained basement window installations. Larger panel antennas like the Antop AT-800SBS require more clearance from the mounting surface but compensate with additional capabilities such as dual-TV output and variable amplification. Multi-element outdoor-capable designs like the Channel Master Omni+ 50 become viable only when the installation has access to even a partial exterior mounting point. Buyers should measure available window surface area and egress opening dimensions before selecting an antenna, as the narrowest opening in a typical basement may be the highest-signal location in the entire unit.

ATSC 3.0 and NEXTGEN TV Compatibility

The ongoing ATSC 3.0 broadcast standard rollout — branded as NEXTGEN TV in 2026 — is expanding to additional markets and bringing with it 4K HDR broadcasts, improved audio, and significantly enhanced signal robustness characteristics that benefit exactly the marginal-reception environments that basement apartments represent. NEXTGEN TV's OFDM-based transmission scheme handles multipath interference and signal attenuation better than the legacy ATSC 1.0 standard, which means that as NEXTGEN TV coverage expands in a given market, basement reception reliability will improve for compatible antenna and tuner combinations without any hardware changes. All seven antennas reviewed here are compatible with NEXTGEN TV reception where broadcast towers support the standard, and buyers in early-adoption markets should confirm their television's tuner supports ATSC 3.0 to capture the full benefit. The combination of a compatible antenna and an ATSC 3.0-capable tuner represents the most future-proof OTA setup available in 2026, particularly for below-grade installations where every dB of additional signal robustness translates directly into a more reliable viewing experience. Readers interested in complementary audio equipment to pair with a new OTA television setup may find useful context in the DAC reviews covering high-quality audio decoding for home theater systems.

Common Questions

Key Takeaways

• The Mohu Leaf 50 Original earns the top overall recommendation for basement apartments in 2026, delivering switchable amplification, multi-directional reception, and a proven track record in below-grade signal environments at a competitive price point.
• The Winegard FL5500A FlatWave Amped is the best value pick for buyers who prioritize amplifier quality over smart features, with its 1.0 dB noise figure producing cleaner signal recovery than any other antenna at its price tier.
• The Antop AT-800SBS is the definitive choice for basement households with two televisions, providing native dual-output connectivity and variable gain control without requiring a separate amplified splitter.
• The Channel Master Omni+ 50 unlocks a significant performance tier above all indoor flat panel options for basement apartments with any exterior mounting access, delivering omnidirectional 50-mile reception from a position that completely bypasses concrete attenuation.