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Freeview intermittent interference

When you get occasional sound loss or picture freezes

When you get occasional sound loss or picture freezes
published on UK Free TV

There are several different types of interference that cause problems. This page deals with the situation where:

  • Freeview reception is perfect or near-perfect most of the time
  • The audio on TV and radio channels mutes momentarily a few times each minute
  • The picture on a Freeview channel freezes a few times each minute

There are two main causes of this type of intermittent interference:
  • 'Induction' interference
  • Mobile phone interference

Induction interference

Induction interference is caused by mains-powered household devices that contain a large motor, such as:
  • Washing machine;
  • Tumble dryer;
  • Central heating pump or combination boiler;
  • Fridge;
  • Freezer;
  • Power tools (drills, jigsaws etc)
  • Vacuum cleaners;
  • Water pumps;
  • Automatic doors

You can identify if one or more of these devices is causing the Freeview reception problem by powering off the devices.

If one of these devices is causing the problem, then the reception problem can usually be solved by using a mains filter device and use it on the Freeview boxes mains connection.

Such as device is this: Maplin: 6-Way Flat Screen and HDTV Surge Protector and Mains Filter.

Mobile phone interference

If you keep a mobile phone by your Freeview box or digital television, keep it further away!

This also applies to other transmitters such as baby monitors, video senders, walkie talkies, and portable phones.

Help with Freeview, aerials?
How do I get a test card with Freeview1
I would like to know if it is possible to receive UK terrestrial Freeview servic2
I have been told I would receive too much singal from my Freeview tansmitter as 3
Can my Freeview box receive more than one BBC and ITV region?4
Is it true that my 87 year old mother is entitled to a FREE upgrade when the ana5
In this section
Official aerial installers guide to the TV spectrum future1
Which free digital TV system will give me the most reliable reception?2
High pressure causing channel loss through "Inversion"3
Digital Region Overlap4
Freeview reception has changed?5
Two frequency interference 6

Friday, 30 March 2012

11:31 PM

Glenn: And just in addition to what Mazbar has said, with queries such as yours you should really indicate your location (pref; post code) this being essential to be able to assess the signal strength expected at your location, as the source of the problem suggests that you could possibly be in a low signal strength area and which is always worse for picking up interference.

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jb38's 7,179 posts GB flag
Saturday, 31 March 2012
Brian Springthorpe
7:30 PM
Colwyn Bay

I am getting answers that aren't helping from the management people of this complex of flats where my Mum lives.

They are saying that there is a conflict of 3 quite strong signals which coupled with high pressure weather causes problems.

What the hell do I do to get around that then?

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Brian Springthorpe's 6 posts GB flag
Brian's: mapB's Freeview map terrainB's terrain plot wavesB's frequency data B's Freeview Detailed Coverage
Sunday, 1 April 2012
Brian Springthorpe
7:59 PM
Colwyn Bay

Its worse than first realised!

There's 5 different signals!

Any ideas?

I've sent a strong letter to Freeview, but I doubt it will be any good.

link to this comment
Brian Springthorpe's 6 posts GB flag
Brian's: mapB's Freeview map terrainB's terrain plot wavesB's frequency data B's Freeview Detailed Coverage

8:34 PM

Brian do you know what transmitter it should be? If so can the the tv or freeview box be manualy tuned in it, if it can and it is on winter hill as you say first unplug the aerial and do a auto tune or first time instlation so it tunes in and you get no channels. Next go to manual tune and use the numbers 55, 58, 59, 61, 62 this should tune in winter hill only this wont work on a sony tv though in that case do the reinstall with the aerial unpluged and put it back in when it gets to 69% this will also install winter hill. one last thing if it has any auto update switch it to off this will stop the tv retuning itself hope this helps.

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Mazbar's 384 posts GB flag
Thursday, 5 April 2012
7:31 PM

Who said it is only connecting the box!!!!??
My aerial is pointing to Reigate, any idea if the signal there is ok?

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Nikki's 2 posts GB flag
Saturday, 7 April 2012
Brian Springthorpe
2:20 PM
Colwyn Bay

Mazbar - I have had a response from a guy at Digital UK.

If you can suggest a method by which I can forward this email to you, I would like you to have look at it.

Let me know.

link to this comment
Brian Springthorpe's 6 posts GB flag
Brian's: mapB's Freeview map terrainB's terrain plot wavesB's frequency data B's Freeview Detailed Coverage
Monday, 9 April 2012
dave evans
2:52 PM

i bought a DGM 40" tv off had to go back because the sound dips just for a second about 6 times when watcing in an evening.they sent it back saying they couldnt find anything wrong.when i watched it i am still getting the same problem.any the way i live in north wales.

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dave evans's 1 post GB flag
9:48 PM

Since the London switchover on my humax pvr I'm having to press 814 for bbc1 and 815 for bbc2. Channels 1, 2 and all hd channels are totally dead. Is this normal?

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Jules's 1 post GB flag
Jules's: mapJ's Freeview map terrainJ's terrain plot wavesJ's frequency data J's Freeview Detailed Coverage
Saturday, 21 April 2012
10:01 AM

Since the DSO on the 18th April the Frequencies C60 and C57 have become jittery (not like this before) the other Frequencies C27,C24,C21 much better than before DSO.My aerial is a wideband DAT 75 located in he loft pointing towards Reigate Hill.The digital box signal strength on C27,24,and 21 is 10/10 but on C60 and C57 only 6/10 anyone else got problems from Reigate Hill transmitter.

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Derek's 2 posts GB flag
Derek's: mapD's Freeview map terrainD's terrain plot wavesD's frequency data D's Freeview Detailed Coverage
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