Sky stuttery and pixelated on TVNZ channels

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hazza87

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#26954 8-Oct-2008 15:04

I have the satellite feed currently going into a 3 way power pass splitter that is connected to a My Sky HDi in the lounge another sky box on multiroom in a bedroom and a freeview box in another bedroom.The freeveiw works perfectly and the my sky hdi works perfectly, but the older sky box in the bedroom is very pixelated and stuttery but only on TV One and TV 2. The signal readings on it seem reasonable.

Strength bar - 60ish
Quality bar - 80-100ish

Level - 68-70
BER varies wildly from 0.0E -06 to 9.4E -06 and everything in between.

Is this a dish alligment issue or should i just get a satellite in line amplifier?

Thanks.

cyril7

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#169879 8-Oct-2008 15:14

Based on the figures you have given and the fact that a 3way splitter should normally not pose a problem I suggest there is no need for a amplifier (normally cause more problems than they fix), might I suggest that you move the standard box to one of the MySKy feeds and see if it still mis behaves, make sure the LNB remains powered.

Cyril

hazza87

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#169881 8-Oct-2008 15:17

Until we got the my sky hdi the old box was in the lounge and using the same feed the my sky now is. It never had any problems then.

cyril7

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#169891 8-Oct-2008 15:48

Hi Harry, thats fine, but the figures you have posted, and a intimate knowledge of these things tells me that a three way splitter and a bit of extra cabling does not make these systems normally fall over or need amplifiers. I simply recommend that you systematially try and work out what the issue is.

Cyril

hazza87

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#169924 8-Oct-2008 17:07

I wasn't trying to suggest i did or didnt need an amplifier with that last statement i was just trying to answer your question. I think you may have read too much into what i said.

In simpler terms, when the old sky box is connected to the satellite feed in the lounge it has no issues.

cyril7

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#169927 8-Oct-2008 17:12

Hi, sorry, didnt mean to sound like that, but most folk have this thing about amplifiers in Lband systems, they rarely if ever are needed in simple domestic systems.

So if you connect all three tuners (the two HDi and one standard STB) to the 3way splitter directly in the lounge so that all three tuners are fed as normal but without the cable between the lounge and normal Standard STB site does it suffer this problem. When setup like this what signal level is shown on the standard STB (and quality) when watching TV1, and repeat the tests when in the remote location.

Cyril

hazza87

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#169936 8-Oct-2008 17:41

Right so plugged everything into the lounge and it all works fine. The standard stb has almost all the same signal readings except the signal level and signal strength readings which rose slightly to 74ish from 70ish.

I also tried another splitter i had lying around the place to check if the other one was faulty and same result no better.

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cyril7

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#169939 8-Oct-2008 18:00

The most likely cause is LNB skew, there is a NANZ split Vpol feed that comes and goes on 12670MHz within TP7, which is only 1MHz away from the TP15low mux that Skys TV1 and TV2 feeds are on, you will also find this effects MGM and Trackside. If it persists then get Sky to come and check the LNB skew, it may only be out a very small amount.

I think the system change to include the HDi is just a red hearing that may have provided a small amount of extra loss that shows this cross polarity interference up a little more.

As this TP7 transmission is a feed, it may come and go, so the problem may not always exist, how much this tranmission is used I dont know.

Cyril

illicit

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#169998 8-Oct-2008 21:38

Connect the Freeview in the location you normally have the troublesome Sky box and see if it plays up then, could be poor wiring or connection on that particular leg of the splitter.