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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.

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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

Comments
Thursday, 15 July 2021
C
Chris.SE
sentiment_very_satisfiedPlatinum

5:48 AM

Kevin Dixon:

There has been engineering work at Emley (and also a number of local relay transmitters). The work at Emley (as I undertstand it) has been to get the main mast fully in service.

There's been some periodic adverse weather conditions affecting reception for some, which may not have helped. If your reception doesn't settle down then Freesat may be your best option.
How far away roughly are the trees?

Amateur or other such radio transmissions are unlikely to be affecting you (similarly 4/5G) unless there are antennae or masts close to you which I'm sure you'd notice.
We'd need a full postcode to look at predicted reception in your locale, which sounds like an awkward area if your neighbours have similar problems.

link to this comment
Chris.SE's 2,424 posts GB
Tuesday, 20 July 2021
C
Clevefan
7:17 AM

Thanks for sharing the great content here, i will read the other interesting pagess. Yeah, hope we could view more video here.

link to this comment
Clevefan's 2 posts US
Thursday, 7 October 2021
R
ROGER CULLINGHAM
10:41 AM
Callington

My reception on both TV and recorder is good in the morning.In the evening TV is OK recorder pixelates.any suggestions please? Post code PL17 7LZ. We live in a valley and the ariel points south and not west to Caradon Hill.The problem varies and is not constant.

link to this comment
ROGER CULLINGHAM's 1 post GB
C
Chris.SE
sentiment_very_satisfiedPlatinum

1:20 PM

ROGER CULLINGHAM:

Recent (and some current) weather conditions can cause TV signals from distant transmitters to travel further and so cause interference when the wanted signal from a local transmitter is already marginal, which could be part of what is happening with you.

The fundamental problem with you is that the aerial is not pointing at (or even nearly at) the transmitter and even in a valley that will cause you to have a weaker signal than could be available!!
Your location is only 5km from Caradon Hill and whilst reception predictors aren't always 100% accurate, Freeview's does not predict reception from any other transmitter and suggests very good reception from Caradon Hill.

Your aerial should be pointing at a bearing of 234 degrees for your locale (approx. marginally S of WSW) and the rods (or squashed Xs) should be horizontal.
I suggest you look into repositioning your aerial!

link to this comment
Chris.SE's 2,424 posts GB
Friday, 15 October 2021
B
business web design
3:02 PM

I keep listening to the news broadcast speak about getting free online
grant applications so I have been looking around
for the most excellent site to get one. Could you advise me please, where could i acquire some?

link to this comment
business web design's 1 post US
Saturday, 16 October 2021
C
Chris.SE
sentiment_very_satisfiedPlatinum

1:33 AM

business web design:

This is a UK website and probably not the place to help with your query.

link to this comment
Chris.SE's 2,424 posts GB
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