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Author Topic: Lansat SNR
Gronw Roberts
Film Handler

Posts: 60
From: Y Felinheli, Gwynedd, Wales
Registered: Oct 2015


 - posted 02-22-2016 12:33 PM      Profile for Gronw Roberts   Email Gronw Roberts   Send New Private Message       Edit/Delete Post 
The SNR for the satellite signal seems to be fluctuating a lot, the signal itself is constant at 78% though. The SNR for the most part sits around 60% but can fluctuate between 4% and 100%. It happened during our last live and we had problems with the picture and sound (I wasn't there but was given the lowdown after).

What's going on here? I've read it might be cables or connectors. I've never seen the dish setup (it's on another building altogether) but I know the signal gets to the Lansat over a fibre cable.

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Paul Willmott
Film Handler

Posts: 25
From: Widdington, Essex, UK
Registered: Jul 2006


 - posted 02-23-2016 11:19 AM      Profile for Paul Willmott   Email Paul Willmott   Send New Private Message       Edit/Delete Post 
We had a similar problem which turned out to be a missing bolt on the dish stand. When the wind blew, the dish moved slightly causing a poor signal.

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Gronw Roberts
Film Handler

Posts: 60
From: Y Felinheli, Gwynedd, Wales
Registered: Oct 2015


 - posted 02-23-2016 03:52 PM      Profile for Gronw Roberts   Email Gronw Roberts   Send New Private Message       Edit/Delete Post 
Interesting, we had terrible problems last time because of wind. The dish has been reinforced since then but we're still getting these fluctuations even when the weather is mild.

Are fluctuations in the SNR a normal thing? I tried a channel today and the picture seemed fine even thoughthe SNR was all over the place.

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Steve Moore
Expert Film Handler

Posts: 211
From: Leeds, West Yorks, UK
Registered: Apr 2008


 - posted 02-23-2016 04:19 PM      Profile for Steve Moore   Email Steve Moore   Send New Private Message       Edit/Delete Post 
I too get signal problems in wind and am or was about to try build a brace for the dish, though we have nothing loose it does vibrate in the wind. Another of our sites sheered a bolt during the strong winds in Yorkshire a few weeks back and lost everything; it was only 1 degree out, but that over 1000s of miles to the satellite is way out of whack!

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Ian Garland
Film Handler

Posts: 23
From: oswestry, shropshire, UK
Registered: Sep 2014


 - posted 02-24-2016 06:36 AM      Profile for Ian Garland   Email Ian Garland   Send New Private Message       Edit/Delete Post 
Just doing test for NT Live 'As you like it'. LANsat SNR is at 85% and Signal at 80% seems stable with no fluctuations if that helps in anyway as a comparison to your setup.

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Gronw Roberts
Film Handler

Posts: 60
From: Y Felinheli, Gwynedd, Wales
Registered: Oct 2015


 - posted 02-25-2016 11:31 AM      Profile for Gronw Roberts   Email Gronw Roberts   Send New Private Message       Edit/Delete Post 
Thanks Ian. Which satelite are you pointed at?

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Ian Garland
Film Handler

Posts: 23
From: oswestry, shropshire, UK
Registered: Sep 2014


 - posted 02-25-2016 01:14 PM      Profile for Ian Garland   Email Ian Garland   Send New Private Message       Edit/Delete Post 
Intelsat 10-02

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Gronw Roberts
Film Handler

Posts: 60
From: Y Felinheli, Gwynedd, Wales
Registered: Oct 2015


 - posted 02-25-2016 01:25 PM      Profile for Gronw Roberts   Email Gronw Roberts   Send New Private Message       Edit/Delete Post 
Me too. We might need to move our dish, somethings going on somewhere. The SNR is still jumping but the broadcast is playing perfectly which is good news!

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Ian Garland
Film Handler

Posts: 23
From: oswestry, shropshire, UK
Registered: Sep 2014


 - posted 02-25-2016 01:39 PM      Profile for Ian Garland   Email Ian Garland   Send New Private Message       Edit/Delete Post 
Glad your shows holding up, hope it stays that way. We currently have a very Stable SNR of 95% and Quality of 81% to 87%. What size dish are you using ?

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Gronw Roberts
Film Handler

Posts: 60
From: Y Felinheli, Gwynedd, Wales
Registered: Oct 2015


 - posted 02-25-2016 01:46 PM      Profile for Gronw Roberts   Email Gronw Roberts   Send New Private Message       Edit/Delete Post 
To be honest I don't know! I had nothing to do with it's instillation and our I.T department have been dealing with it ever since. Glad to know your show is going well too.

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