SBS Channels - Mediaportal DVB-S

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valtam

396 posts

Ultimate Geek
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#69810 13-Oct-2010 12:36

Hi,

Does anyone have the MediaPortal settings in TV Server for the SBS channels?

Frequency - ? (khz)

Symbol Rate - ?

Polarisation - ?

Modulation - ?

Low (LOF1) - ?

High (LOF2) - ?

Switch (LNBSW) - ? Mhz

Thank you :)

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xarqi

727 posts

Ultimate Geek
+1 received by user: 7

#391312 13-Oct-2010 13:04

Here's a start:

12648 MHz

SR 12600

Vertical

geekiegeek

2513 posts

Uber Geek
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Inactive user

#391330 13-Oct-2010 14:00

I just set it to Optus D1 and set the following.

LOF1 10750
LOF2 11300
switch 0

Using a sky installed dish.

It will scan and pick up sky, freeview and SBS

valtam

396 posts

Ultimate Geek
+1 received by user: 2

#391340 13-Oct-2010 14:24

If someone could post a screenshot of their settings that shows all that I listed in my initial post, I would be most grateful, thank you.

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mm1352000

1149 posts

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#392024 14-Oct-2010 23:29

So much depends on your setup. It is not just a matter of copying someone else's settings!

Like xarqi said, a good start is (using the MediaPortal terms):

Frequency - 12648000 kHz

Symbol Rate - 12600

Polarisation - LinearV

Modulation - Not Defined (or Qpsk)

The other settings depend on what kind of LNB you have. Common settings are:

Low (LOF1) - 9750 MHz

High (LOF2) - 10600 MHz

Switch (LNBSW) - 11700 Mhz

Low (LOF1) - 10750 MHz

High (LOF2) - 10750 MHz

Switch (LNBSW) - 12750 Mhz

Low (LOF1) - 11300 MHz

High (LOF2) - 11300 MHz

Switch (LNBSW) - 12750 Mhz

You should use the same settings for this as you use to get Freeview/Sky...

Jaxson

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#392157 15-Oct-2010 11:01

Yeah remember you can't have any other device using the same lnb for freeview either.
The H polarity will overide the Vertical that SBS is on.
(this includes a sky box, even on standby from memory.)

valtam

396 posts

Ultimate Geek
+1 received by user: 2

#392185 15-Oct-2010 12:44

Thanks fellas for the posts, I have tried all the settings, I get Freeview no problem, just no SBS, must be the dish and or the LNB I'm using? No signal on scans for SBS, full signal strength on Freeview.

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xarqi

727 posts

Ultimate Geek
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#392194 15-Oct-2010 13:01

What size dish?
SBS is a little weaker than Freeview. I've got a 90cm and one box I tried couldn't get SBS reliably, although it could find it; three others had no problems.

What LNB? I guess it's possible it only receives a single polarity, no matter what signals you send up the cable.

You did note Jaxson's post about competition among boxes for switching?
Without a multiswitch in the middle, a Sky box (or any other box set to H pol) will hold the connected LNB on H pol despite another requesting V pol.

valtam

396 posts

Ultimate Geek
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#392204 15-Oct-2010 13:12

Its a little weird to be honest, because a couple of months ago I had a pretty good signal on SBS, but it increasingly got worse until one day where I just ditched the SBS channels because I was sick of the degrading quality.
Just this week I decided to do another scan to see if there had been any improvement since I last tried it, and now there is no signal whatsoever.

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xarqi

727 posts

Ultimate Geek
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#392206 15-Oct-2010 13:15

Excellent - a new datum!
Check your cabling - look for any corrosion or places where water may have entered. You could try tweaking your skew angle in case something has shifted.

valtam

396 posts

Ultimate Geek
+1 received by user: 2

#392210 15-Oct-2010 13:19

Will inspect when I get home tonight, cheers.

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