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Windows 7: Tv signal problems

19 Nov 2009   #11


You started out by looking up the details of your transmitter and fitting the correct type of aeriel I hope?!? I mention this because the wrong type of aeriel can easily induce faults like depixellation & other abhorrences, ghosting, bleed, etc.

For instance I'm on Huntshaw and the details I need to know are:-

Freeview on Huntshaw Cross TV transmitter | - independent digital TV + switchover advice, since 2002

I needed a C/D type aerial following the digital switchover. You can look up your own masts details from this linked page easily enough.

In the UK since the digital switchover many transmitters have had their power level dramatically boosted, tending to cause signal issues to some customers with direct proximity and/or line of sight to the mast.

The correct type of masthead filter could eradicate this, providing it complies with the transmitter band specifications in your locale. It goes without saying you need a good quality of cable and that geographic factors like salt sea air can corrode antennae elements over a number of years (where I am this is an issue, I literally have to change my roof aeriel every decade due to the corrosive salt air!)

Get the signal capture optimised and brought in on a decent cable before looking for faults in any other regards, otherwise you'll be wasting your time.

My System SpecsSystem Spec
19 Nov 2009   #12


Perhaps the wireless setup you have was not intended for distribution in countries where the main TV Source is DVB-T?
My System SpecsSystem Spec
19 Nov 2009   #13


Hi Jimbo.

I am using a quite decent although old Labgear distribution amp, so I don't think that's it, I have already tried every output, including the one that feeds the tv. there is only about 6m of decent low loss cable between the amp and the pc. I use a Netgear dg834n router, tried different channels, still the same.

I just tried turning off the wireless card and my router, no good either. There is always next doors BT Voyager that comes in at 100% signal strength, I suppose that might be it. If it is there isn't going to be much I can do about it.

Thanks for the advice.


I was going to try the card in an old XP machine, but no pci express slot, so that's out.

I guess I could always revert to watching the TV!!
My System SpecsSystem Spec

19 Nov 2009   #14


Is there really no one out there who might know where my mystery WMC7 signal strength meter might have disappeared to? Microsoft say there is one, i've seen screenshots of it. I know they say it will only work with a digital card, but i've got one of those.

I am a bit upset that I haven't got one, I don't like being left out!!!
My System SpecsSystem Spec
19 Nov 2009   #15


Quote   Quote: Originally Posted by awilsonlee View Post
There is always next doors BT Voyager that comes in at 100% signal strength, I suppose that might be it. If it is there isn't going to be much I can do about it.
Actually that's not true. There are strict rules about RF interference.

TV interference or reception problems | Ofcom
My System SpecsSystem Spec
19 Nov 2009   #16


Got to prove it though!
My System SpecsSystem Spec
19 Nov 2009   #17


Actually you don't. They do callouts.
My System SpecsSystem Spec
19 Nov 2009   #18


Oh yes, It's only the pc that's affected, tv is fine, loads of signal,no interference.
My System SpecsSystem Spec
19 Nov 2009   #19


Ooh do they? I might have to resort to that then. I suppose I should wait untill he turns his router off, see if that's what's causing it first.
My System SpecsSystem Spec
19 Nov 2009   #20


Any TV receiving equipment is covered, it doesn't matter if it's a set or a PC.

Trust me, I have had problems with a local Radio Ham who was punishing a sideband signal and even though he was a mile away, Ofcom tracked him down and sorted the problem.

Not that I would necessarily agree your problem is anything to do with RF interference.
My System SpecsSystem Spec

 Tv signal problems

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