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Topic # 34668 27-May-2009 15:32
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Just had the Quad LNB installed yesterday as part of our MySkyHDi upgrade, I noticed its got 2 extra outputs on it, what are these designed to do?




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  Reply # 218351 27-May-2009 15:38
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The name says it all Quad = four, it has four outputs. As these new LNBs are Quad LNBs (as opposed to quattro) then all outputs can see any inputs depending on supply voltage and 22kHz tone presence. Therefore the other two could be connected to other tuners either in single one off STBs or other PVRs.

That said the feed going to IF input1 of the HDi can be split and fed to other tuners (IF input1 of other HDi's or standard Sky or FreeView STBs) and they will see the normal Optus D1 spectrum.



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Cyril

Edit, A Quattro LNB is commonly used in Europe, it has 4 outputs but each output is dedicated to a function. A normal universal wideband LNB has four spectrum inputs, H&V and Low and Highband, it will have 4 outputs that have one of those four spectrums hardwired to it. As opposed to a Quad that allows any output to see any input spectrum depending on supply volts and 22kHz. Obviously in our situa frequency).





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  Reply # 218357 27-May-2009 15:57
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so if I've understood you correctly, I can say setup another satellite box in the home and run a cable to the dish and connect it to output 3 and expect it to work properly? and if I use 22kHz tone it would switch to optus C1 without disrupting the mysky box in the lounge?

 
 
 
 


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  Reply # 218359 27-May-2009 16:06
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Yes, of course that assumes the information I recieved regarding this LNB is correct, which I am pretty sure it is, ie its a true Quad output, having never seen one till other than your pic I can only go on what I am told.

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Cyril

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  Reply # 218393 27-May-2009 17:53
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Is this part of the upgrade that is supposed to take place this year?





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  Reply # 218399 27-May-2009 18:07
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Optus D1 is pretty much a full house. For Sky to expand (in particular HD services) they are taking up capacity on Optus D3 that will fly with C1 at 156E, this new LNB will allow mulitple tuners (ie all those in an HDi and standard STBs) to see both D1 and D3.

My guess is that once D3 is in service all HD services will move to D3 leaving two muxs clear for SD expansion on D1, this way only HDi subs will need LNBs upgrading (some 75k subs) compared to 700k SD subs, ultimately I presume all subs will need upgrading as both SD and HD services need to expand on D3.

D3 is not due to go into service till latter this year.



Cyril



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  Reply # 218406 27-May-2009 18:46
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I'd understand it too if Foxtel and Sky share this new transponder space on D3, e.g Discovery and Nat Geo HD simulcast to both Foxtel and Sky.

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  Reply # 218493 27-May-2009 22:45
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DjShadow: I'd understand it too if Foxtel and Sky share this new transponder space on D3, e.g Discovery and Nat Geo HD simulcast to both Foxtel and Sky.


this would be a smart idea one would think.  There should be no issue to have a beam that covers both countries.  It's already done on D1, D2 and C1.

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