Freeview intermittent interference
Brian Butterworth 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?
Saturday, 6 July 2013
Tony Haynes: If it is a wireless connection perhaps it is your source of interference. It is certainly something you need to check out.
If they do use wifi then turn off the router or disable its wifi and see if it stops the interference.
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Sunday, 7 July 2013
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Tony Haynes9:18 PM
Dave Lindsay: Thanks. I've asked the solar panel installer, see whether it's a known issue - might be that the panels are making an hourly communication with the website of the inverter manufacturer. The fact that it's 3 minutes past every hour suggests this might be the case.
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Tony Haynes: Consider if there could be a contributary factor. For example, is there a connection/join in the aerial lead somewhere near to the possible source of interference? If so maybe it is faulty and needs re-doing.
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Wednesday, 10 July 2013
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Tony Haynes8:50 AM
Tony Haynes: Panel installer suggested switching off the internet connection, which I have now done. Still getting the same problem, so it's back to the drawing board!
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Wednesday, 7 August 2013
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Peter Western12:28 PM
Could you tell me what the strength should be I live in the Selsey area(PO20) and at present we are only 47/48percent. Would raising the arial 6feet make a difference or should I put in a booster. Thanks (PO20 an)
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Peter Western: is that the measure for quality or signal strength?
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Peter Western: Turn your aerial vertical.
From Rowridge, all channels are radiated vertically and horizontally.
PSB channels are at 200kW horizontal and 200kW vertical.
COM channels are at 50kW horizontal and 200kW vertical.
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Friday, 9 August 2013
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Peter Western10:11 AM
Briantist/ Dave Lindsey Thanks to you both for your replies, Briantist,on "yesterday" channel (19) the measure for signal is 30per cent and quality is 10percent but on BBC ITV & chan 4 its 49per cent signal and 100 quality.It does seem to stay low on these lower channels.
Dave Lindsey, as I have now bought the poles and fittings I will be lifting my aerial by about 7/8 feet so I think that I will put it to vertical and see how that goes. Again thank you both for your replies and help will let you know the outcome. Pete
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Monday, 19 August 2013
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Dave G4:01 PM
Colchester
We receive form the Sudbury aerial. about 5 days ago we started to get interference to the picture and sound (sharp blips every now and again that co-inided with reduction in picture quality)
Now the interference to sound and picture is constant on all channels. Have followed advice on clearing tuning and re-doing but still the same issues.
we have 4 ee masts in the local area.
does anyone have any advice as to how I can get my TV back working (sony with built in free view)
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Dave's: mapD's Freeview map terrainD's terrain plot wavesD's frequency data D's Freeview Detailed Coverage
Thursday, 22 August 2013
Dave G: There's no 4G in Colchester, so it's not going to be that.
I would have thought the best thing to do is to check your cables for damage, as this is the most likely explanation for problems with all frequencies.
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