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Old 07-08-2006, 3:44 PM   #1 (permalink)
swabyk
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Signal Strength & Quality

Hi All,
Quick question. Not that impressed with my Sky quality on a Samsung 40" LCD. However I havent got SkyHD as yet. not for a couple of weeks so im well aware it wont be brilliant anyway until HD is the norm.

However Ive had a look in the setup and found that I have a SIGNAL STRENGTH of around 75% and a SIGNAL QUALITY of 50%

Is this adequate?, or should I get Sky back to have a look as they only justy installed this new dish and cable last week.

Thanks
K
 
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Old 07-08-2006, 4:13 PM   #2 (permalink)
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Signal quality is more important assuming there is some signal strength if you are to aviod constant drop outs and blocking.
If your getting a stable picture, tweeking the dish won't give you a better picture. Digital transmissions are basically you get it or you don't, not to be confused with old analogue aerials.

Normally I'd expect to see at least 50% or quite a bit more (75%) but the standard sky dish and LNB is a bit limited in the adjustments available, a proper dish and LNB will always give good results assuming it is pointing at clear sky. Trees, walls, buildings, and even boiler flue condensate can screw up the signal. A poorly fixed dish that can move will also bugger things right up, these dishes need to be spot on really, just lean on a dish and see the picture disapear completely.....

Of course your 40" LCD might be the limiting factor to your current PQ
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Old 07-08-2006, 5:18 PM   #3 (permalink)
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Quote:
Originally Posted by swabyk
Is this adequate
It should be adequate. It's about what I have and I never have reception problems with my Panasonic TU-DSB40.

Whether it's right is another question, and not one that we can answer because you omitted your location, dish size and cable length.

But bear in mind that signal readings are a bit arbitrary and vary quite a lot, even between identical receivers.
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Old 08-08-2006, 8:17 AM   #4 (permalink)
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A proper signal strength meter would be best, figures of at least 58dBmv for strength and a BER (block error rate) of 1.xx (which equals 75% or more) means a good install. Of course rubbish acbles adn location do have an influence but of course the alingment is done with the test kit connected to the LNB so at least you know where it is going wrong...... Its amazing what another five minutes can do for signal quality but Sky man rarely bothers cos it don't make that much difference but occasionally does....
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Old 09-08-2006, 2:20 PM   #5 (permalink)
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Also, as long as you have a steady picture (ie no pixilisation, freezing and/or drop outs) there's nothing to worry about.
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