- What's happening and why?
What's happening and why?
Mobile operators are offering 4G mobile services across the UK. 4G enables mobile devices such as smartphones, laptops and tablets to access the internet at super-fast speeds. This is driving innovation in business, entertainment, education and public services and helps the UK stay competitive in an increasingly digital world.
- When will this happen?
When will this happen?
The first 4G at 800 MHz services launched on 29 August 2013. These networks are expanding across the UK; when and where they launch depends on the roll-out plans of the mobile operators.
- What has this got to do with you and your TV?
What has this got to do with you and your TV?
Both 4G mobile services and digital TV use parts of the radio spectrum, that is bands of frequencies, to reach us. The 800 MHz frequencies used by some 4G services are next to the frequencies used for Freeview.
TVs and set-top boxes that receive Freeview may have the TV service blocked by these 4G signals; there is a very small chance this may cause disruption to your Freeview service. Cable and satellite services will not be affected.
You are more likely be affected if you live close to a new 4G mast, are in an area with weak digital television reception or have a TV signal booster. If you have received a postcard from us, and experience new disruption to your Freeview service, find out how at800 can help.
- Help and advice
Help and advice
Have you recently noticed new interference to Freeview such as frozen or blocky images, loss of some or all of your channels? You may have received a postcard from us advising this might happen. The TV interference may be caused by new mobile masts being activated in the area. However, there are many different factors such as the weather or faulty aerials that can also cause TV interference. Our help and advice pages have some ideas on what you could check.
Cable and satellite services will not be affected by new mobile signals.
- Online Self-Diagnosis Tool
Online Self-Diagnosis Tool
An easy to use, step-by-step questionnaire which can indicate whether or not the TV interference you are experiencing is being caused by a nearby mobile mast. If at the end of the questionnaire you’d like further help and advice, please call us.
Our FAQ section includes many questions, from what you should do if you notice new TV interference to answering the question of “Who is at800?” If you cannot find the answer to your question, just call us or send an email.
- Find a TV Aerial Engineer
Find a TV Aerial Engineer
If we do not think your TV interference is being caused by mobile signals and you wish to find a local TV aerial engineer, visit the Confederation of Aerial Installers (CAI) website.
- Possible Causes of Interference
Possible Causes of Interference
The weather and power tools are just two things that could cause TV interference.
0808 13 13 800
When you call us, you will be asked a series of questions to help us understand if the TV interference is being caused by mobile phone masts.
For example, we will ask:
Is it some TV channels that are affected or all of them? If it is specific channels, we will ask which ones. This will help determine if a retune is required to account for Freeview network changes.
We will ask where your aerial is located – on the roof or in your loft – or is it a set top aerial – and the approximate date of when it was installed. You will also be asked questions about the condition of your cabling. TV reception problems can be caused by loose, trapped or crushed cabling. All cables should be securely fixed with clips. Water seeping into the cable will also affect your TV reception. If you can see the cabling, we would recommend that you check the condition before you give us a call.
Don’t worry if you don’t know the answers to these questions, we can help you.
What other things could you check?
- If the sound is quieter than before, this could be because you have a set top box/digital TV recorder (or personal video recorder) for which the output volume has been turned down.
- If the remote control handset doesn’t work. The batteries may need replacing.
- If a thin line or lines appear across the picture. This might be caused by impulse electrical interference – see common causes of interference for more information.
- If the picture has gone blue. Check that the SCART (the 21 pin lead) is plugged in fully.
- Your TV may have a motion sensor activated which will check for activity or movement in the room. If no activity or movement is detected during a set period, your TV will switch to standby.
- Some set-top and digital recording devices have an energy saving mode. If this is active, it can prevent the TV signal reaching the TV’s digital tuner resulting in a ‘no signal’ message.
Transmitter updated and planned engineering works could cause issues with your TV picture. Further details are available on the Digital UK website.