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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?
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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, 22 April 2011
9:36 AM

Hi, I am in LE100PX post code. I have
built-in 'freeview' HD ready TV.
I have retuned the Tv 21/4/2011 I still have the problems. Almost all programs loss 'signal weakness'
I have BT Vision and Broadband supply.

Noted that the 'good weather' start has not helped the pixalation and weak signal cut off. Sounds like Geo-satatic is ok but is 'Precession of Earth,' having a North/South wobble in and out of the satelite coverage areas, and summer/spring weather or we are having solar/cosmic/solar wind,interferance.? Imaging the dark and 'Hold that torch still' situation.!

Any conclusive comments, not funny sex or God moments.

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Buchanan's 1 post GB flag
Buchanan's: mapB's Freeview map terrainB's terrain plot wavesB's frequency data B's Freeview Detailed Coverage
3:47 PM

hi im in dover have been having problems with freeview for a couple of weeks now pixalation freezes and loss of channels mainly bbc itv and channel 4 bbc being the worst i have tried different boxes and getting via built in tv but still the same outcome can you help please!!! postcode Ct17 9ah

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vicky's 1 post GB flag
vicky's: mapV's Freeview map terrainV's terrain plot wavesV's frequency data V's Freeview Detailed Coverage
5:44 PM

My postcode is PE7 3JL. I recently bought a Samsung 19" TV with built-in freeview - prior to this I had a separate freeview box and TV. It is a portable TV in the bedroom.
The signal strength on the Samsung TV is 95-96% but I regularly get intermittent pixellation and screen-freeze. I had no problems with the old set-up and all the cables are the same and quite new as is the external roof aerial.
The main TV works fine and there are no problems.
I have tried switching off mobile phones, removed the external speakers, and by a process of elimination tried to work out what, if anything, could be affecting the signal. Nothing makes much difference - although removing the external speakers did help calm the pixellation problem.
Please can you help?

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DanB's 1 post GB flag
DanB's: mapD's Freeview map terrainD's terrain plot wavesD's frequency data D's Freeview Detailed Coverage
?Michael Moore
7:19 PM

Hi i am from southampton, post code SO45 1ss.

I can recieve itv 3,4 and the rest that everyone else is complaining about.

I have done a factory reset and auto retunes as per the retune website but still am having no luck.

What do i do


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?Michael Moore's 2 posts GB flag
?Michael's: map?'s Freeview map terrain?'s terrain plot waves?'s frequency data ?'s Freeview Detailed Coverage
Saturday, 23 April 2011
Brian Springthorpe

9:19 AM


It is a brand new shielded cable on that TV, which is sited in the conservatory.

In fact the main TV in the lounge is fitted with what you would term as the worst cable of all 3 TVs. It is the old coax cable that was run for the original H type aerial and it works like a dream.

I do not have any amplification on any of the 3 cables.

The small TV in the master bedroom, takes a little time to get its signal, but I put that down to the lengthy run, but once it gets the picture and the sound it works great.

I guess its something I'll have to live with for a while unless it's something simple.

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Brian Springthorpe's 76 posts GB flag
4:54 PM

My postcode is DN6 0HD and over the last 3 days all the channels received through Freeview lose sound and vision for up to 3 seconds at various time intervals i.e. 10,15,20,30,40 seconds apart which makes viewing annoying.What's the problem ? Is it prelininary work on the change over?

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C.Roebuck's 1 post GB flag
C.Roebuck's: mapC's Freeview map terrainC's terrain plot wavesC's frequency data C's Freeview Detailed Coverage

5:22 PM

C.Roebuck: See the top of the page.

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Briantist's 38,915 posts GB flag

5:30 PM

Brian Springthorpe: It might be a "brand new shielded cable" but it could still be faulty...

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Briantist's 38,915 posts GB flag
?Michael Moore
8:54 PM

So is there anything i can do to fix this situation?????

link to this comment
?Michael Moore's 2 posts GB flag
?Michael's: map?'s Freeview map terrain?'s terrain plot waves?'s frequency data ?'s Freeview Detailed Coverage
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