My TV signal is weak or lost. Is this being caused by 4G?
4G may cause TV interference including the loss of signal. However, the ‘no signal’ message can appear for a variety of non-4G related reasons. It is typically related to signal routing issues or even too much signal.
‘No signal’ can often appear when there is a digital TV recorder (DTR) or other set top box (STB) connected but powered down or on standby, therefore, when you switch on your TV, it cannot receive the signals from the aerial that is first connected to the switched off DTR or STB. These units need to be powered up to pass on the output aerial signal to the TV.
Having too much signal strength, can also result in the ‘No signal’ message. Aerial systems which are unnecessarily amplified, show the same symptoms as too little signal. Some TV tuners can be overloaded with signals and then display no signal before shutting down to standby.
If you have a second TV in the house which has its own aerial and you get a good picture, the loss of signal on your main TV may be due to problems with your aerial. We have more information about this and other possible causes of interference here.
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- What is 4G? Why is it being introduced?
- Why might 4G affect my TV?
- How will I know if my TV is affected?
- I am missing some Freeview channels. Is this caused by 4G?
- Will 4G affect TV received through satellite or cable?
- Will TVs in caravans, campers and narrowboats be affected?
- Will I see interference on devices such as 4G handsets, radio, tablets and computers?
- Where can I find more information on which areas have 4G coverage?
- Is it true that millions of homes might be impacted?
- I live in London, will I be affected?
- How will at800 let me know if my Freeview may be affected?
- My neighbour has received a postcard and I have not. Why?
- What are filters and how are they fitted?
- Can I fit the filter myself?
- How can I get a filter?
- What if I have a set-top box?
- What if I have an indoor TV aerial; can I still attach a filter?
- What if I have more than one TV running Freeview?
- What if the filter doesn’t resolve the interference?
- Can I get more filters if needed?
- I am moving house, do I need to take my filter to my new home?