No Eurobird 1 at 28.5°E - Techwatch: Satellite TV forums, FTA, Cable, Hardware, & Tech forums

Davei · 28-03-07, 08:51 PM

I've just made my first attempt at setting up a multi-bracket on a Triax TD78 dish - with three LNBs for the 13°, 19.2° and 28.2-5° respectively.

I've got both the Astra 1 and Hotbird satellites coming in good and strong. The Astra 2 sats are also good and strong. But I'm not getting any channels at all off Eurobird 1 (which, of course, is supposed to be received on the same LNB as Astra 2). Is this simply a case of having to slide the relevant LNB some 1-3° to the right on the bracket? Or might there be something else that's preventing Eurobird 1 reception? Any thoughts would be appreciated.

Jimdefruit · 28-03-07, 11:57 PM

You would get channels from 28.5 with the dish/lnb setup aimed at 28.2. Have you actually scanned the channels on 28.2 to make sure you are not picking up another satellite?

Mickha · 29-03-07, 12:59 AM

Try scanning Zone Horror, 11261 H 27500.

Davei · 29-03-07, 10:10 AM

I've tried scanning the Zone Horror transponder frequency - and two or three others. In every case I get 'no service found'. Reception on the Astra 2 sats (28.2) is fine.

Davei · 29-03-07, 01:47 PM

I've now tried adjusting the LNB - no luck. I've tried mounting the dish a little higher - some luck. With the dish higher up I could just about get some Eurobird 1 channels, but they kept breaking up. Meanwhile, I'd lost the Astra 2 channels (BBC News 24 down to 61% SNR). There was a compromise height and LNB position, but this got both Eurobird 1 and Astra 2 with SNR values ranging from 71% to 76% with frequent break-up of picture (as you'd expect with those values).

This is a bit of a mystery. Could it be a problem with the LNB itself? It's a Star Sat twin universal (focus too narrow, perhaps?).

Anyway, I've got everything back almost as it was, though the signals received by each of the three LNBs are a little down on what they were (but still adequate).

(Oh, and by the way, how come signal-to-noise ratio is expressed as a percentage?!)

BGonaSTICK · 29-03-07, 11:05 PM

Sounds like just a little more tweaking required. Focus on skew and LNB location (height just as much as lateral position).

Astra 2 should knock your receiver over - make sure you have the slope of the multi-LNB arm right - the 28.x LNB should be maybe 2 or 3 cms higher than the Hotbird one - as 'Astra2' sats are lower in the sky.

SNR percentage? Yeah, It's a little screwed up.

Davei · 30-03-07, 11:11 AM

Thanks, Stick. I will do some more playing about with the set up, though I probably won't get a chance till next week. I am a little surprised, though, that getting 28.2-5°E is being so difficult when both 19.2°E and 13°E were so easy - it was almost as if they aligned themselves!

28-03-07, 08:51 PM	#1 (permalink)
Davei Senior Member Join Date: Jan 2007 Location: Littlehampton Posts: 112 Thanks: 9 Thanked 6 Times in 6 Posts	No Eurobird 1 at 28.5°E I've just made my first attempt at setting up a multi-bracket on a Triax TD78 dish - with three LNBs for the 13°, 19.2° and 28.2-5° respectively. I've got both the Astra 1 and Hotbird satellites coming in good and strong. The Astra 2 sats are also good and strong. But I'm not getting any channels at all off Eurobird 1 (which, of course, is supposed to be received on the same LNB as Astra 2). Is this simply a case of having to slide the relevant LNB some 1-3° to the right on the bracket? Or might there be something else that's preventing Eurobird 1 reception? Any thoughts would be appreciated.

28-03-07, 11:57 PM	#2 (permalink)
Jimdefruit Super Moderator Join Date: Jan 2006 Posts: 2,775 Thanks: 10 Thanked 113 Times in 105 Posts	Re: No Eurobird 1 at 28.5°E You would get channels from 28.5 with the dish/lnb setup aimed at 28.2. Have you actually scanned the channels on 28.2 to make sure you are not picking up another satellite? __________________ Dreambox 800 HD; Dreambox 7000s + VBox + Channel Master 1.2 with 36v actuator CM120 feedhorn and Invacom .3 LNB Skystar 2 PCI card with links to my Dreambox If you like what you see here, tell your friends.

29-03-07, 12:59 AM	#3 (permalink)
Mickha Super Moderator Join Date: Feb 2006 Posts: 1,713 Thanks: 5 Thanked 276 Times in 218 Posts	Re: No Eurobird 1 at 28.5°E Try scanning Zone Horror, 11261 H 27500.

29-03-07, 10:10 AM	#4 (permalink)
Davei Senior Member Join Date: Jan 2007 Location: Littlehampton Posts: 112 Thanks: 9 Thanked 6 Times in 6 Posts	Re: No Eurobird 1 at 28.5°E I've tried scanning the Zone Horror transponder frequency - and two or three others. In every case I get 'no service found'. Reception on the Astra 2 sats (28.2) is fine.

29-03-07, 01:47 PM	#5 (permalink)
Davei Senior Member Join Date: Jan 2007 Location: Littlehampton Posts: 112 Thanks: 9 Thanked 6 Times in 6 Posts	Re: No Eurobird 1 at 28.5°E I've now tried adjusting the LNB - no luck. I've tried mounting the dish a little higher - some luck. With the dish higher up I could just about get some Eurobird 1 channels, but they kept breaking up. Meanwhile, I'd lost the Astra 2 channels (BBC News 24 down to 61% SNR). There was a compromise height and LNB position, but this got both Eurobird 1 and Astra 2 with SNR values ranging from 71% to 76% with frequent break-up of picture (as you'd expect with those values). This is a bit of a mystery. Could it be a problem with the LNB itself? It's a Star Sat twin universal (focus too narrow, perhaps?). Anyway, I've got everything back almost as it was, though the signals received by each of the three LNBs are a little down on what they were (but still adequate). (Oh, and by the way, how come signal-to-noise ratio is expressed as a percentage?!)


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29-03-07, 11:05 PM	#6 (permalink)
BGonaSTICK Super Murderator Join Date: Nov 2005 Location: Brighton Posts: 10,633 Thanks: 3 Thanked 64 Times in 37 Posts	Re: No Eurobird 1 at 28.5°E Sounds like just a little more tweaking required. Focus on skew and LNB location (height just as much as lateral position). Astra 2 should knock your receiver over - make sure you have the slope of the multi-LNB arm right - the 28.x LNB should be maybe 2 or 3 cms higher than the Hotbird one - as 'Astra2' sats are lower in the sky. SNR percentage? Yeah, It's a little screwed up. __________________ Dreambox 7000, Skystar2 PCI, Skystar USB, Fibo 90cm on Moteck SG2100, Triax TD110 multi-LNB. Sky + ART cards. 45.0°E - 58.0°W

30-03-07, 11:11 AM	#7 (permalink)
Davei Senior Member Join Date: Jan 2007 Location: Littlehampton Posts: 112 Thanks: 9 Thanked 6 Times in 6 Posts	Re: No Eurobird 1 at 28.5°E Thanks, Stick. I will do some more playing about with the set up, though I probably won't get a chance till next week. I am a little surprised, though, that getting 28.2-5°E is being so difficult when both 19.2°E and 13°E were so easy - it was almost as if they aligned themselves!