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221 posts

Master Geek


  Reply # 562488 29-Dec-2011 15:16
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I am trying to get SBS, Nine, Go and Gem and am having no joy whatsoever!

I have an old sky dish, a newish zenus quad output 10750 ku band lnb and a vesta 7300 dvb-s2 receiver.

I am receiving the freeview channels with 98% signal and 98% quality with the above, but nothing with the frequencies and transponder settings from Lyngsat for the aussie channels.

I am I doing anything wrong, or are any of the parts I have not right/working..?

I don't have much hair to tear out! 

196 posts

Master Geek
+1 received by user: 7


  Reply # 562494 29-Dec-2011 15:25
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When you recieve good signal strength and quality from one transponder but poor or non existant from another on the same satellite it is likely that the skew of the LNB is your problem. A quote from another geekzoner on another forum thread:

http://www.geekzone.co.nz/forums.asp?forumid=83&topicid=94900&page_no=1#562481

Your dish has to be perfectly aligned with skew to grab what signal it can, and as its polarity and transponder differ from the rotation of the NZ freeview ones, can be tricky to obtain both at the same time with 100% hitrate.


It is difficult but possible however, I use an old sky dish installed by sky technicians and have not touched it. I am able to recieve Freeview with near %100 strength and quality and around %60 on the australian channels.

221 posts

Master Geek


  Reply # 562495 29-Dec-2011 15:28
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cgreenwood: When you recieve good signal strength and quality from one transponder but poor or non existant from another on the same satellite it is likely that the skew of the LNB is your problem. A quote from another geekzoner on another forum thread:

http://www.geekzone.co.nz/forums.asp?forumid=83&topicid=94900&page_no=1#562481

Your dish has to be perfectly aligned with skew to grab what signal it can, and as its polarity and transponder differ from the rotation of the NZ freeview ones, can be tricky to obtain both at the same time with 100% hitrate.


It is difficult but possible however, I use an old sky dish installed by sky technicians and have not touched it. I am able to recieve Freeview with near %100 strength and quality and around %60 on the australian channels.


What are we talking here in terms of getting the skew right...? I've tried carefully and slowly turning the lnb around to see if the quality bar goes up (currently 0%) with no luck. 

2667 posts

Uber Geek
+1 received by user: 277


  Reply # 562516 29-Dec-2011 16:16
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We almost need to merge these threads into a big aussie TV motherload :)

Yep, Skew angle of 1deg can be the difference between on and off. Even twisting it with the head still tight can make a difference.

I too have a sky installed dual head, it gets the church channels on C1 with 22k switch enabled (as you expect.. but all of those are on skip, its for the V8s :) ) and all the sky/freeview off D1.

The upshot is I also get fairly good signal on SBS. However due to their constant change in power levels, and a sinking house.. this can vary.

Similarly, when I put my portable dish out the door for D2 V8s, I tune it to the Optus test channel at around 85%, but still have to rotate both the dish, and head skew to get the signal of the V8 transponder to around 58% off the same bird.

Both are better on a 65-90cm dish as apposed to the smaller 45s that some people have.

It may be that you are getting awesome signal off the NZ FV spot due to its power, but the dish itself is not quite tilted or rotated correctly.. you would hardly notice. But for the others they need to be bang on.

Its a catch 22, you may have to decide which you want the better signal of, and tune it specifically for that.. both rotation, skew and tilt.. Then see if the FV one is still alive.

Its like parabolic wifi signals, you will always get part of a signal, but the strength varies depending on how much of it is zipping past the receiver after being bounced unless its peering down the barrel.

And with skew, as one voltage is equivalent of going _ and the other | as you can imagine, to get both it needs to be bang on  / assuming everything else is looking straight at the stretched out panels, swinging it slightly makes a difference to either FV/Sky... or SBS

221 posts

Master Geek


  Reply # 562517 29-Dec-2011 16:17
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OK, I have SBS!!!

So a bit of patience and slowly turning the lnb skew has worked in getting SBS 1-4 and SBS HD!!!

Now just need Nine, GEM and Go... Assuming they are up...? 

2667 posts

Uber Geek
+1 received by user: 277


  Reply # 562519 29-Dec-2011 16:20
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Dammit could have found it before I wrote my epic post :)

At least my point was discovered.. its hit n miss.

Word has it the others are possibly down, I cant confirm as I do not have a DVB-S2 receiver (which is required to decode the MPEG4 streams) but the user may be in the same boat as you and not have it aligned

221 posts

Master Geek


  Reply # 562521 29-Dec-2011 16:25
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Oblivian: Dammit could have found it before I wrote my epic post :)

At least my point was discovered.. its hit n miss.



Ha, but a great explanation anyways - many thanks!

290 posts

Ultimate Geek
+1 received by user: 21


  Reply # 562524 29-Dec-2011 16:43
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They were working last night but this morning I checked and no signal for 9, Go, Gem. Damn, I was looking forward to the cricket.




Antec Veris Fusion v2 Case, Gigabyte 880GM-USB3, Nvidia GT-730, AMD FX 6100 6-core 3.3Ghz, Blackgold BTG3600, Hauppauge HVR-2200, Logitech Harmony 525 remote, Windows 10 (32-bit), Mediaportal.

 

 


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30 posts

Geek


  Reply # 562557 29-Dec-2011 17:23
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My Sbs channels are working well but right now GEM, GO and Nine have no signal (was ok last night)

196 posts

Master Geek
+1 received by user: 7


  Reply # 562639 29-Dec-2011 20:14
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Confirmed :( Nine, Go and Gem are gone here as well (New Plymouth)

405 posts

Ultimate Geek
+1 received by user: 21


  Reply # 562648 29-Dec-2011 20:22
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My SBS on Optus D1 has gone ... hopefully that is just rain fade on the 60 cm dish. At least I can still get SBS on C3 (90 cm dish) with the Aurora card.

57 posts

Master Geek


  Reply # 562733 30-Dec-2011 00:02
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first time ever..... but "GO", "GEM" and "NINE NETWORK" have gone from Tauranga. 0%

very sad day indeed. hope it IS the weather, and not someone who's "blabbed" to the Australians!!! lol. 

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30 posts

Geek


  Reply # 562743 30-Dec-2011 00:24
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yes I hope so too as up here in Auckland I have lost GO , Nine and GEM
BUT surprisingly my favourite,  SBS (both SBS 1 and SBS 2) are ok (usually these are not ok when the weather is bad)


 

674 posts

Ultimate Geek
+1 received by user: 79

Subscriber

  Reply # 562816 30-Dec-2011 10:43
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Just got back from the Marlborough Sounds. The freeview channels come down at around about 98% signal strength. SBS comes in at about 70%.




Morgan French-Stagg

 

morgan.french.net.nz

 

 


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30 posts

Geek


  Reply # 562983 30-Dec-2011 19:51
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are your gem , go and 9 ok ?


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