Freeview is such a wonderful service for UK TV watchers and cord cutters – you get more than 80 channels for free, and all you need is a compatible TV (or set-top box) and an aerial. However, there’s one barrier affecting some households – you need to have a good signal in your area.
If you live too far from the transmitter tower, or your house is blocked, the reception might be bad – and your indoor aerial won’t work. Furthermore, if you want to use one aerial for several tellies, or run a particularly long cable between the aerial and your TV – the signal will deteriorate quickly. That’s when – in some cases – an aerial amplifier that can boost the Freeview signal can help.
However, an aerial booster doesn’t always help, and in some cases can even make reception worse. So in this article, I’ll take a look at who can benefit from a signal amplifier (whether you have an indoor or outdoor aerial), what to consider before you buy one – and I’ll review some of the best aerial signal boosters available in the UK today.
Quick Look
Best Overall Aerial Boosters
Excellent Freeview signal amplifier, feature-rich, and a decent price.
Another excellent amplifier from SLx, with two outputs
Slim, USB-powered, and perfect for hiding behind your telly
Best Budget Aerial Booster
Impressive design, good signal boosting – and very cheap
Table of Contents
Why Is My Freeview Reception Bad?
If you want to watch Freeview channels on your TV for free (without a cable/satellite subscription) the cheapest way is to do it via an indoor aerial. As long as your TV supports Freeview (and all TVs manufactured and sold in the UK after 2012 do – otherwise you can get a stand-alone Freeview Box), all you need is to plug the aerial (a small indoor one, or a bigger one on your roof) into the TV, and scan for the channels.
What Is Freeview?
Freeview, first established on 2002, is the commercial name for the United Kingdom’s digital terrestrial television platform. Freeview provides access to a large number of free-to-air TV channels, including HD channels and radio stations, without any monthly subscription costs (You do, however, need to pay the yearly TV licence fee in most cases).
Without good reception (for example, when you’re too far from the transmitter), even the best indoor aerial won’t help – it simply won’t get a strong enough signal that it can translate into TV channels.
Making sure the signal in your area is strong enough for Freeview, basically comes down to connecting an aerial and trying it out.
However, you can start by checking the estimated coverage with the Digital UK Postcode Checker, where you put in your address and get some details about reception in your area and the number of Freeview channels you should be able to watch with that kind of coverage.
So if the Freeview signal coming to your house is low – a signal booster can help. Sometimes.
What Is An Indoor TV Aerial Booster?
Explaining what a signal booster does is rather easy: your aerial “catches” the Freeview transmissions in the air, and translates them into information your TV can interpret. The aerial delivers the signal at a specific strength (depending on what it manages to get from the air) – for example, 60dB.
You then connect the aerial to a cable, that delivers that signal to your TV. Via the cable, however, the signal loses some more of its strength, so by the time it reaches your TV, it’s down to – let’s say – 30dB.
The signal booster (which, ideally, sits as close to the AERIAL as possible) simply amplifies that signal – by 20dB, for example. So the cable will now carry get a signal of 80dB, and by the time it reaches the TV, it’s 50dB – and you get better reception and – hopefully – clearer Freeview channels.
The aerial booster (which you need to connect to a power source) can also be used to split the signal from one aerial (indoor or outdoor) to several TVs. You will, still, lose some signal strength on the way – but thanks to the amplification, you will still be able to send “enough” of a signal from your aerial to the multiple TVs in your house.
Will An Indoor Aerial Booster Help With Freeview Reception?
The short answer is: sometimes. Signal amplifiers have pros and cons and only help in certain situations.
First, it’s important to remember that if there’s no signal in your area (or a very bad one) – a booster won’t make a difference. If the reception is zero, there’s nothing to amplify. The same goes for very low signals – while the amplifier might raise them a bit, you still won’t get a strong enough signal to watch Freeview channels.
But wait, there’s another possible problem – an aerial booster is a pretty “dumb” device. It takes everything that comes into it – and amplifies it. So, if there’s a lot of electric interference running through your cables, for example – the amplifier will amplify THAT as well, and your TV reception will be worse off than without the amplifier.
- If reception in your area is truly terrible, you’ll have to look at other options – such as Freesat (read my guide here), or a streaming device.
There are, however, several situations where an aerial signal booster CAN help:
- When reception in your area is mediocre, but amplification will make it strong enough.
- When you’re running a long cable from your aerial to your TV, and you need to amplify the signal strength that the cable loses on the way.
- When you want to connect one aerial to several television sets. The signal from the aerial is “split” between the multiple cables – so a booster will give you more signal “juice” to spread around.
How To Improve Freeview Reception With An Aerial Booster
While living far-away from the transmitter and having bad reception are things that can’t be easily fixed (at least not by yourself), there are several things you can still do – so here are a few tips on how to improve the signal your TV gets, and how to get more Freeview channel in the process.
Indoor Aerial Placement
Most houses no longer have outdoor aerials on the roof. So If you’re using an indoor aerial (see my recommendations here), you should put it as close to the window as possible. If your TV sits far from the window, you’ll need to use a long cable – which causes the signal to weaken. That’s exactly where an aerial booster can help, by amplifying the signal.
You should also try not to place the aerial (and the amplifier) near electrical devices that might cause interference to the signal – such as a microwave, a WiFi booster, or even a washing machine.
Indoor Aerials With Built-In Amplifiers
Some indoor aerials already have boosters built in. That’s not always a good idea, however – if you find out you don’t need the amplifier (or worse – you find out it messes up the signal instead of making it better), you’re stuck with it. So it might be a better idea to buy a regular aerial (non-amplified), and add a standalone amplifier – like the ones recommended here – if and when you need it.
Indoor Aerials With Detachable Amplifiers
Some aerials come as a “bundle” of both an aerial and a signal booster that you can attach or detach, depending on your needs. While it can save you money, you do sometimes get what you pay for, and the booster might not be as powerful as one you would buy on its own.
4G Filtering
With 4G for mobile phones becoming so popular, its signal is in the air all around us, especially in large cities. Consequently, a strong 4G signal might interfere with the Freeview signal, so aerial signal boosters that have 4G filtering can help mitigate that problem (and some amplifiers are even promising 5G filtering).
Check The Signal Booster’s Gain Level
The best TV aerial boosters specify their gain level in dB – that’s by how much they can amplify the signal. While generally speaking higher is better, sometimes you don’t want to go too high, as the device might amplify noise and bad signals along with the “good” ones. Some signal boosters also let you variably change the level of amplification.
Don’t Forget The Cables
While your indoor aerial will come with its own cable, a signal booster will not (in most cases). So don’t forget to get an extra antenna coaxial cable (you connect the aerial to the booster – and the booster to the TV – so make sure the cable is long enough).
You can find a good coaxial cable here.
Cord Busters’ Best TV Aerial Boosters 2023
| Rank | Signal Booster | Our Rating | Price |
|---|---|---|---|
| 1 | SLx Signal Booster 1-Way | ⭐⭐⭐⭐⭐ | CHECK PRICES |
| 2 | SLx 2-way Signal Booster | ⭐⭐⭐⭐ | CHECK PRICES |
| 3 | 1 For All Signal Booster | ⭐⭐⭐⭐ | CHECK PRICES |
| 4 | SLx USB Aerial Amplifier | ⭐⭐⭐ | CHECK PRICES |
Pros
- Great Price
- Up To 20 dB Gain Level
- 4G Filtering
Cons
- A single output
- No variable gain control
SLx TV Signal Booster Review
SLx have been building aerial and electronic equipment for years, so they know what they’re doing – and it shows. This amplifier has most of the things you should be looking for – 4G filtering and boosting up to 20dB.
At this price, having just one output (so you can only connect one TV) is a bit disappointing, but frankly, that’s probably enough for many people.
All in all, this is an excellent aerial signal booster, which does exactly what it says on the tin (as always, if you have no reception in your area, nothing will help). And with such a decent price tag, and so many pleased buyers, it’s no wonder this is our Editor’s Choice.
Pros
- Variable gain control
- 4G / 5G Filtering
- Great price
Cons
- Gain control screw is difficult to operate
- New model, not a lot of feedback yet
SLx TV Signal Booster Review
Another good model from SLx – this amplifier has 4G/5G filtering and variable gain control (with a somewhat hard-to-operate screw), which is a useful feature in some cases.
This has two outputs – so you can connect up to 2 tellies via the same aerial.
The only major reason it’s in second place on our list, is that it’s a newer model – therefore it doesn’t have feedback from a lot of buyers, yet.
Pros
- Excellent Price
- Up To 23 dB Gain Level
- 4G Filtering
- Small Design, Wall Mountable
Cons
- No Variable Gain Control
- Flimsy build quality
One For All Signal Booster Review
“One For All” is another electronics company that’s been around for a long time, and their products are usually quite solid.
Their signal booster is slim, white, and wouldn’t stand out too much if you mount it on the wall, which is a plus (though you’ll still have cables running in and out of it, of course).
The 23 dB gain level sounds impressive, but remember – there IS such a thing as too much amplification, and sometimes it might do more harm than good, so it’s a shame you can’t manually control the gain level.
However, as one of the cheapest signal boosters available, you get excellent value for money.
Pros
- Up To 20 dB Gain Level
- 4G Filtering
- Can be powered by USB port on TV
Cons
- Using a power outlet would require another connector
- No Variable Gain Control
SLx USB Aerial Amplifier Review
Another solid signal booster from SLx, this amplifier’s biggest advantage is also its disadvantage – the fact that it’s USB powered, and you’re supposed to “hide” it behind your TV.
If you want a small amplifier that you can easily connect and forget about (especially if you have a free USB port on your TV), then this is the perfect choice for you.
However, it’s usually better to connect the amplifier to the aerial directly, and then run a longer cable (if you need one) from the amplifier to the TV – and not from the aerial to the amplifier. But if you position this aerial behind your TV, it’s likely to be far from your aerial – unless the aerial is ALSO next to your TV.
But for what it sets out to do – this is a very decent amplifier.
I currently get 8 channels from my local transmitter, which I have line-of-sight to & is about 8 miles away. I have replaced the aerial, which is in the attic (no foil insulation). The aerial is the correct K-group one, by Blake UK. If I watch a program on channel 32, every time a vehicle goes past the house the picture pixelates. It doesn’t happen on any of the 7 other channels. Channel 32 is the lowest frequency, and the claimed power is 50kW. 3 other channels are rated at 100kW, and the rest are 50kW or lower.
My question is;- if I fit an amplifier, is there a possibility that I will cure the pixelation issue? Or is this likely to be something I have to live with unless I bite the bullet and get the aerial fitted outside?
Hi Stuart,
If you are that close to a 50kw transmitter and you fit an amplifier, odds are you will make matters worse. You can have too much signal, as well as too little, all an amp should do is take up the slack if there is any. It’s possible you need an attenuated to rectify your issues. As for vehicles passing, this sounds like impulse noise, interference received on the aerial and connecting cables which affects the quality of the data received, and causes the pictures to break up. This is not as easy to cure, it could mean new cables if the shielding is poor. I would start with the atennuator, het yourself a 12dB, or better still a variable type, put this in the back of the telly, and se how you get on. The only sure fire way to know is get a reputable local installer with an analyser to check the signals. Hope this helps.
Thank you, Peter, that is a great help.
I have 3 free view tv’s my downstairs tv receives London live perfectly but my upstairs one says no digital signal. I have twice paid aerial installers to come out because of poor signal to tv the last one came out and I thought did a good job but I still don’t receive London live upstairs. My signal comes from Crystal Palace. I rang him and he said to buy a signal booster not a cheap one though but will this fix the issue and where do I put it. Because of Covid I would rather fix it myself if I can rather than get him back.
Hi Kate.
Its sounds to me that the upstairs TV is connected to a different aerial.
All an amplifier does is send whatever it receives to the TVs connected to it.
If you have the signal downstairs, it should be there upstairs.
Can you see where the cables attach to your TV, and follow them, there will be a device splitting the signal from the aerial.
It’s not unusual for aerial installers to fit another aerial for a new room, rather than extending a system, as this can be more cost effective for the householder.
Hope this helps.
My aerial points at Sandy Heath, about 70 miles away. The signal is usually OK but every couple of weeks I lose the BBC channels, everything else is OK. Simply retuning the TV returns BBC to its rightful place. The cable from the roof mounted aerial is old and the outer sheath is cracked. Could this be causing the problem? I don’t understand why BBC should be more affected than the other channels.
Hi Felicity,
A cracked cable allows water to seep into the cable and cause a short circuit. This will weaken the signal and can also cause damage to equipment attached to the cable as the water will corrode the connections.
A replacement is needed for sure.
Hi I am in Derby and my TV Signal is absolutley rubbish! My Aerial is pointed toward Waltham Transmitter for East Midlands Channels. I have the SLX Signal Booster by my TV set and still the Signal is very poor. A few months ago I had the TV Aerial Re-Installed it fell down due to high wind in March this year (It is a High Gain TV Aerial). Needless to say the Signal is still very poor. Some freeview Channels I don’t get at all. On Wednesday 8th July 20 I switched the TV On and the Signal was Cracking (got maximum Signal and Quality on ALL Channels) the following day Business as usual!
Could you please suggest what the problem could be? I am consdiering installing a Mast Head Amplifier in the loft, could you please tell me how far from the Aerial can this be installed, considering I can not get close to 1 metre from the Aerial as it is Installed on the side of the House. The Maximum distance for me would be double (2m).
Your Input into this would be most appreciated.
Thank you
Parminder Sehmbi
Since you have a very technical issue, I think an aerial installer (who knows what he’s doing) would be able to give you more specific advice. You could also try first to contact the official Freeview Advice Line at 03456 505050
Hi Thank you for your very prompt reply. I will try and get hold of the Aerial Installer again and see if he can shed some light on this matter.
I am considering installing a Mast Head Amplifier in the loft, the Amplifier will be about 2m from the Aerial. If this does not work, the other option will be to have a Satellite Dish installed. This way I will definitely get a better reception on the TV.
Thanks
Hi I live on a canal boat does anyone know the best booster for me .thanks