Multi-LNB setup - Techwatch: Satellite TV forums, FTA, Cable, Hardware, & Tech forums

Stv · 06-03-07, 08:29 PM

Lo all,

My Edisions and cable arrived yesterday so I am all ready to finish installing my dish. I have the azimuth bearing sorted (I took a direction using the sun on Saturday) so only the elevation and skew to do now.

But anyway, coming to what I wanted to write about. I am hoping to eventually use my dish with a dual-tuner set-up, and hopefully have another room wired as well. Given that I have four LNBs this sounds like it will be a monstrous amount of cable - and 8-cable thick holes in the wall sounds like an awful idea; I dread the idea of it becoming 16.

So, are there any ways to reduce the number of cables? Perhaps this is something I should have asked before I bought the 4-way LNBs etc. Will I also need to unplug the sat feed every time I want to change satellites? Are there switches/multiplexers/mixers/whatever available that could do it for me?

I am planning to receive 28E, 23.5E, 19.2E and 13E on a 60cm dish. I'm only after FTA, with interest in FTA high definition & Italian channels too. Do this sound reasonable?

Sorry if I've rambled,
Steve

Jimdefruit · 06-03-07, 08:40 PM

stv, if you are looking at 4 twin LNB's and 2 receivers then the good news is that you can do it with two 4 way diseqc switches. The bad news is I think you will need something bigger than a 60 cm dish to accomodate four LNB's. Ther eis apost somewher here which shown the diseqc connections but I am rushing back to the Liverpool 2nd half so will look later.

Stv · 06-03-07, 08:49 PM

Hi Jim, thanks for the reply, I will do a search for one of these magical diseqc devices you speak of

My dish is specially designed for up to five LNBs* - so I thought it should be ok. Was it a physical constraint that you spoke of and does my dish get around this?

hope the result was what you wanted in the footy,
Steve

* http://www.sadoun.com/Sat/Products/W...sh-antenna.htm

Jimdefruit · 06-03-07, 10:59 PM

Ok, Liverpool are through. I am not a true supporter, I just like the way they play.

That toroidal dish should be ok and I beleive one or two members have them. However, I dont have experience of them and there may be a problem trying to get two satellites close together.

Have a look at the following: http://www.satelitska-tv.com/montaza_multifeed.asp.

Not quite what you are after but if you treat each of the dishes as shown as a section of a twin LNB and then just have 2 x 4 way diseqc switches, each diseqc switch would connect to a receiver (tuner)..

If the diseqc switches are weatherproof and located near the dish then you only need two cables, one to each tuner.

SAT-WORLD · 08-03-07, 10:49 PM

You could also use twin satellite cable(shotgun),to reduce the number of cables,even on the outside.
http://cgi.ebay.co.uk/SKY-Plus-HD-ca...QQcmdZViewItem

06-03-07, 08:29 PM	#1 (permalink)
Stv Member Join Date: Feb 2007 Posts: 54 Thanks: 0 Thanked 0 Times in 0 Posts	Multi-LNB setup Lo all, My Edisions and cable arrived yesterday so I am all ready to finish installing my dish. I have the azimuth bearing sorted (I took a direction using the sun on Saturday) so only the elevation and skew to do now. But anyway, coming to what I wanted to write about. I am hoping to eventually use my dish with a dual-tuner set-up, and hopefully have another room wired as well. Given that I have four LNBs this sounds like it will be a monstrous amount of cable - and 8-cable thick holes in the wall sounds like an awful idea; I dread the idea of it becoming 16. So, are there any ways to reduce the number of cables? Perhaps this is something I should have asked before I bought the 4-way LNBs etc. Will I also need to unplug the sat feed every time I want to change satellites? Are there switches/multiplexers/mixers/whatever available that could do it for me? I am planning to receive 28E, 23.5E, 19.2E and 13E on a 60cm dish. I'm only after FTA, with interest in FTA high definition & Italian channels too. Do this sound reasonable? Sorry if I've rambled, Steve

06-03-07, 08:40 PM	#2 (permalink)
Jimdefruit Super Moderator Join Date: Jan 2006 Posts: 2,696 Thanks: 10 Thanked 92 Times in 86 Posts	Re: Multi-LNB setup stv, if you are looking at 4 twin LNB's and 2 receivers then the good news is that you can do it with two 4 way diseqc switches. The bad news is I think you will need something bigger than a 60 cm dish to accomodate four LNB's. Ther eis apost somewher here which shown the diseqc connections but I am rushing back to the Liverpool 2nd half so will look later. __________________ 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.

06-03-07, 08:49 PM	#3 (permalink)
Stv Member Join Date: Feb 2007 Posts: 54 Thanks: 0 Thanked 0 Times in 0 Posts	Re: Multi-LNB setup Hi Jim, thanks for the reply, I will do a search for one of these magical diseqc devices you speak of My dish is specially designed for up to five LNBs* - so I thought it should be ok. Was it a physical constraint that you spoke of and does my dish get around this? hope the result was what you wanted in the footy, Steve * http://www.sadoun.com/Sat/Products/W...sh-antenna.htm

06-03-07, 10:59 PM	#4 (permalink)
Jimdefruit Super Moderator Join Date: Jan 2006 Posts: 2,696 Thanks: 10 Thanked 92 Times in 86 Posts	Re: Multi-LNB setup Ok, Liverpool are through. I am not a true supporter, I just like the way they play. That toroidal dish should be ok and I beleive one or two members have them. However, I dont have experience of them and there may be a problem trying to get two satellites close together. Have a look at the following: http://www.satelitska-tv.com/montaza_multifeed.asp. Not quite what you are after but if you treat each of the dishes as shown as a section of a twin LNB and then just have 2 x 4 way diseqc switches, each diseqc switch would connect to a receiver (tuner).. If the diseqc switches are weatherproof and located near the dish then you only need two cables, one to each tuner. __________________ 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.

08-03-07, 10:49 PM	#5 (permalink)
SAT-WORLD Senior Member Join Date: May 2006 Posts: 1,511 Thanks: 3 Thanked 50 Times in 50 Posts	Re: Multi-LNB setup You could also use twin satellite cable(shotgun),to reduce the number of cables,even on the outside. http://cgi.ebay.co.uk/SKY-Plus-HD-ca...QQcmdZViewItem


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