Have bought a lcd HD tv - plugged into our freeview box. The reception is awful on some channel. Any direction??
I'm also reading loads of conflicting warning about ariels - is near such a thing as a a digital one or a short time ago a 'better one'. Am really hoping we don't need a hot ariel as our landlord will not be pleased!
Any proposal gratefully received. Thanks!
Answers: Hello, I'm giving you a full answer because there is a risk that someone will mislead you beside duff information otherwise. Your Freeview box is very unlikely to be the problem.
Your comment roughly "generlly good" is a bit of a givaway. The signal just isn't pious enough. It have to be 99% perfect.
A poor signal on an analogue nouns will show up as 'ghosting' or wavy lines within the background. A digital picture will be in motion blocky or disapear altogether.
HOW IT WORKS
Digital terrestrial box squeezes more channels into the available spectrum than analogue because it "mulitplexes" the tv stations.
This medium that whereas you only enjoy 1 tv station per UHF channel surrounded by analogue systems, you have around 4 tv stations per UHF channel contained by digital systems.
That's why you see your Freeview box taking its time when it's scanning. It is looking for adjectives tv stations that are using each of the UHF channel.
This all works by using a system certain as "multiplexing". You will have conceivably a dozen availble "Mux" at each transimitter. This will distribute about 48 tv/radio stations on digital.
It is repeatedly the case that respectively "mux" tends to hold similar stations within it. So, your local transmitter will enjoy the ITV stations either within the same, or nearby Mux's.
RECEPTION
If your reception is weak at the airborne then the tv may not know how to get a polite enough ability signal to "resolve" the Mux. That's why you are losing a group of stations but may still be able to see another group (such as the BBC stations).
The weather can adversly affect digital tv transmissions in strange and peculiar ways. Different Mux's can drop within or drop out and really confuse you just about what's going on.
AERIAL
The only solution is to revolutionize your reception by getting a better aerial. Sorry in the region of this. It will mean spending some money, but you don't hold to waste your money on 'gimics'.
Don't take-home pay extra just because an airborne is called "digital". That's in recent times an advertising "puff" to put the price up. There is nought special about a tv mast that makes it "digital". It's of late something that pulls in a stronger signal.
An airborne called "High Gain" is what you entail. If you look at the thing count the number of "elements" (the horizontal bars).
To guarantee fully clad reception you should have at lowest possible 10 elements (fewer if you can see the transmitter with your undressed eye). Get the best you can afford and put it on the roof rather than inside if you can. A apposite aerial will be give or take a few lb25 from Maplin Electronics (www.maplin.co.uk).
Ask your neghbours if they'll chip in to replace the transmitter to share the cost. That should keep the manager happy.
A professional installer may charge roughly lb100-lb130 to do the job for you, but he will also include a righteous quality modern down organize as well. This is not profoundly of money compared to the cost of your telvision and Freeview box and will enable you to obtain the best from them.
AMPLIFIERS
Don't dick about wasting your money on an mast amplifier. They cost 20% of the price of a new transmitter installation and they're not all that appropriate with digital tv signals anyway.
I hope that this help. Sorry it's a bit long winded but you should now be capable of resolve the 'conflicting advice'.
you need a trial digital ariel
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