ONE ANTENNA, EVERY TV IN THE HOUSE: FOUR WAYS TO BUILD IT

The Question That Started This

“I've got three TVs. I want all of them on an antenna. Do I need three antennas, or one?”

It sounds like a simple question and it used to have a simple answer: one antenna, split the coax, done. That answer is still available, and for a lot of houses it's still the right one. But it is no longer the only one, and the newer option changes the job enough that it's worth understanding before anyone quotes you.

Here's the sentence that reframes the whole thing: you do not have to distribute the antenna signal over coax anymore. A single good antenna can feed a network tuner near the point where it enters the house, and every TV in the building picks up live channels and recordings over your home network through an app. No coax to the televisions at all.

That matters enormously, because the coax situation in a given house is usually the thing that decides the cost. If the wiring turns out to be a rat's nest, the traditional approach gets expensive fast — and the networked approach simply doesn't care.

Option 1: A Separate Antenna On Each TV

Antenna → TV 1
Antenna → TV 2
Antenna → TV 3

Cheapest upfront, needs no wiring at all, and every big-box store will happily sell you three of them.

It's also the option we'd recommend least, unless reception at the house is genuinely excellent. The problem is that each antenna is in a different room, at a different height, pointed differently, with different walls in the way — so each television ends up receiving a slightly different set of channels. The living room gets a station the bedroom doesn't. Somebody's picture breaks up during weather and somebody else's doesn't. There's no single thing to troubleshoot because there is no single system.

And recording becomes its own separate problem at every screen, which usually means it just never happens.

It's a real option. It's the right call in a small apartment with a clear line to the towers, or when only one TV really matters and the others are occasional. It is not a whole-home system.

Option 2: One Antenna, Distributed Over The Existing Coax

This is the traditional setup, and when a house cooperates it's excellent.

                    ┌── TV 1
ANTENNA → SPLITTER ├── TV 2
                    └── TV 3

One properly installed antenna, one central splitter, coax out to each television. Every TV gets identical channels. There's one antenna to aim, one system to troubleshoot, and it keeps working whether or not the internet is up.

The catch is entirely about what's already in the walls. If the house has RG6 running from each TV location back to one place — a basement, a utility room, a structured wiring panel, an attic, or the old cable company entry point — you are in very good shape. Disconnect the dead cable feed, put the antenna on that same distribution, and the house is effectively already wired for this.

Attic Or Outside?

An attic antenna is usually the first thing worth trying. Nothing is exposed to Chicago weather, nothing is visible on the house, and there's no roof penetration to worry about.

Outdoors normally performs better, though, for the boring reason that height wins in antenna work. An attic install also puts an entire roof between the antenna and the transmitter. Asphalt shingles are tolerable. A metal roof or a foil radiant barrier is close to a dealbreaker — that's a reflector sitting between you and the signal.

Option 3: One Antenna Plus A Network DVR

This is the one most people don't know exists, and for a lot of houses it's now the best answer.

                            HOME NETWORK
                                 │
ANTENNA → NETWORK TUNER/DVR → ROUTER/SWITCH
                                 │
                    ┌───────────┤───────────┐
                  TV 1          TV 2          TV 3
                   app           app           app

The antenna connects to a small box near where it enters the house. That box holds the tuners and the recording storage, and it publishes live TV and recordings onto your home network. Each television runs an app — on the smart TV itself, or on a Roku, Fire TV or Google TV stick. None of the TVs receive radio signal directly.

Which means the coax situation stops mattering. No wall plates? Fine. Coax daisy-chained through three closets by somebody in 1994? Doesn't matter. You need one good antenna location and a working network.

Tablo: The Easy One

The 4th-generation Tablo is the simplest version of this for an ordinary household. Current models come with either two or four tuners, more than 50 hours of built-in recording storage, and a rolling two-week guide. The DVR and the guide carry no monthly subscription — that's the headline. Tablo rates the system for up to six devices at once, limited by how many tuners you have.

It runs on Roku, Fire TV, Android and Google TV, Samsung and LG smart TVs, plus phones and tablets.

HDHomeRun: The Flexible One

ANTENNA
   │
HDHomeRun
   │ Ethernet
ROUTER/SWITCH
   │
   ├── TV
   ├── TV
   ├── TV
   ├── Computer / NAS
   └── DVR storage

The HDHomeRun does the same job with more power and more rope to hang yourself with. The FLEX QUATRO has four tuners; the FLEX 4K has four with two capable of ATSC 3.0 NextGen TV. Three televisions could all be watching different channels at once with tuner capacity left over for a recording.

Its real advantage is that it doesn't lock you into one app. It can act as the tuner source for its own DVR software, for Channels DVR, for Plex, or for a NAS or home server setup — and multiple HDHomeRuns can be stacked if you ever need more tuners. The trade is that the official DVR and guide service is a yearly subscription, and you supply the storage yourself.

What The Hardware Costs

Manufacturer pricing as of publication and it moves around, especially on Tablo. Check before you buy. The antenna, mount, cabling and labor are all on top of these numbers.

The cost difference that actually matters over time is recording. Tablo includes the DVR and guide with no ongoing fee and has storage on board. HDHomeRun's live TV needs no subscription, but the official DVR and guide service runs about $35/year and you add your own drive, computer or NAS.

Option 4: The Hybrid — And This Is The Good One

You don't actually have to choose between coax and network. If the coax is already there, the best system uses both.

                              ┌── RG6 → TV 1
                              │
ANTENNA → DISTRIBUTION ────┤── RG6 → TV 2
          AMP / SPLITTER      │
                              ├── RG6 → TV 3
                              │
                              └── RG6 → NETWORK TUNER/DVR
                                              │
                                          Home network

One antenna feeds the coax distribution and the network tuner. Now every television has direct antenna reception that works even if the router dies, the internet is out, or the DVR box fails — and on top of that the household gets whole-home recording, plus antenna TV on phones, tablets and streaming boxes.

The failure modes stop overlapping, which is the whole point. The network system is the feature layer. The coax underneath it is the one that still works during a storm when the power blinks and the router is rebooting.

If the house already has usable home-run coax, this is the system worth building.

Find The Splitter Before You Do Anything Else

Here's the single most useful thing on a job like this, and it takes ten minutes.

Before quoting, before ordering anything, go find where the coax terminates. Basement ceiling, utility closet, garage, structured wiring panel, or that grey box on the outside of the house. What you find there decides the whole design.

If it looks like this:

Bedroom  ─────┐
Family   ─────┤─ 4-way splitter ─ old cable feed
Basement ─────┤
Spare    ─────┘

— congratulations, the house is already wired for whole-home antenna. Disconnect the dead cable-company feed, put the antenna on that splitter, and you've discovered a distribution system somebody else already paid to install.

If instead you find splitters buried in three different ceilings, coax daisy-chained from room to room, lengths of old RG59 spliced into RG6 and a couple of lines that go nowhere identifiable — stop. Don't chase it. That's the house where the network tuner earns its price several times over, because you can leave the entire mess alone.

What Any Honest Installer Should Ask You

Nobody can price this properly over the phone. If someone quotes a whole-home antenna system without asking most of these, they're guessing and the guess is padded. This is the actual list we work through:

About the signal

• What's the address? That comes first — it determines tower direction, distance, whether VHF matters, and what antenna goes up.
• How many stories is the house?
• Large buildings or mature trees between the house and the towers?
• Is there accessible attic space?
• Asphalt roof, metal roof, or a radiant barrier in the attic?
• Can an exterior antenna be mounted — roof, chimney, gable, fascia, mast?

About the wiring

• Are there coax wall plates at every TV location?
• Where do those lines terminate?
• Are they genuinely individual home runs? Three wall plates do not mean three home runs.
• Is any of that coax currently carrying cable internet or MoCA?

About how you'll use it

• What TVs and streaming devices are in the house already?
• Could all the TVs be watching different channels at the same time?
• Do you want DVR, and roughly how much recording?
• Watch recordings from any TV in the house?
• Antenna TV on phones and tablets too? Away from home?
• How solid is the Wi-Fi, and is there Ethernet anywhere useful?

That last group isn't padding. Whether your TVs can run the Tablo or HDHomeRun app natively, or need a streaming stick added at each one, changes the total by roughly $30–$60 per television — and it's the detail most quotes quietly leave out.

How We'd Package It

For most three-TV houses, one properly installed antenna beats three cheap ones, assuming a single good location can serve the whole building. That's the judgment call worth paying an installer to make honestly — including telling you when the answer is no.

The Short Version

• One good antenna beats three cheap ones in almost every house.
• You no longer have to run coax to each TV. A network tuner sends live TV and recordings over your home network instead.
• Find the splitter first. Clean home-run coax is a free distribution system; a mess of daisy-chained coax is the reason to go networked.
• Tablo is the easy one — DVR and guide included, no subscription, storage built in. About $139.95 for four tuners.
• HDHomeRun is the flexible one — works with Channels, Plex and NAS setups, but the DVR service is about $35/year and you bring the storage.
• Don't buy either for ATSC 3.0 yet. DRM still limits it.
• Attic first if reception allows; outside performs better. Metal roof or radiant barrier means outside.
• No amplifier until you've measured the signal. Over-amplifying looks exactly like weak signal.
• Budget $30–$60 per TV for a streaming stick if a screen can't run the app itself.

Common Questions

Can one antenna feed multiple TVs?

Yes, and for most homes it's the better answer than an antenna per television. Two ways to do it: the traditional one is a good antenna in the attic or on the roof feeding a splitter, with coax to each TV. The newer one is a single antenna feeding a network tuner and DVR like a Tablo or HDHomeRun, which sends live TV and recordings to every screen over your home network. Look at the network route first if the coax is a mess or was never run.

Do I need an antenna amplifier if I split the signal to three TVs?

Not automatically, and this is where a lot of antenna installs go wrong. Measure what you actually have at the antenna first. Splitting a marginal signal three or four ways genuinely can justify a distribution amplifier, because every split costs signal. But amplifying a strong signal overloads the tuners and causes its own failures — which look identical to weak signal, so people buy a bigger amplifier and make it worse. An amplifier is a fix for a diagnosed problem, not a default part.

Is Tablo or HDHomeRun better for whole-home antenna TV?

Tablo is easier and cheaper to live with: DVR and guide included with no ongoing subscription, and storage built in, so nothing else needs buying. HDHomeRun is more flexible and more powerful, and works as a tuner source for Channels DVR, Plex and NAS setups — but the official DVR and guide service is a yearly subscription and you supply the storage. For a household that just wants free TV on every screen, Tablo. For someone already running a home server, HDHomeRun.

Should the antenna go in the attic or on the roof?

Try the attic first — nothing exposed to weather, nothing visible on the house. Outside normally performs better, because height matters more than almost anything else, and because an attic puts a roof between the antenna and the transmitter. A metal roof or a foil radiant barrier is close to a dealbreaker for attic mounting. The honest answer depends on the measured signal at your address, which is why it gets checked on site rather than promised on the phone.

Can I reuse the old cable TV wiring for an antenna?

Very often yes, and it's the biggest single cost saver on a whole-home antenna job. If the coax at each TV runs back to one central point, that's already a distribution system waiting to be reconnected. What you can't assume is that wall plates mean home runs — houses get daisy-chained coax, splitters hidden in ceilings and stretches of old RG59 mixed in. Also check whether any of it still carries cable internet before touching it.

Should I buy an ATSC 3.0 NextGen TV tuner?

Not as the reason to buy the system. ATSC 3.0 is genuinely the future of broadcast, but DRM on some NextGen broadcasts still limits network tuners, and a tuner may simply fall back to the ATSC 1.0 version of the channel. Buy the system because it solves whole-home distribution and recording today; treat NextGen as a bonus that may mature later.

Want Free TV On Every Screen?

Tell us the address and how many TVs. We'll work out where the towers are, whether the attic will do, and what your existing wiring is actually worth — before anyone quotes a number.

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