Difference between Quad LNB and Quatro LNB

**HB13DISH** · 26-04-2008

What is the advantage for using a Quatro LNB Plus 4x4 multiswitch or Quad LNB, if you have only four digital receivers?

**timbo86** · 26-04-2008

You could add as many stb as like like with the right head end set up. But Quattro set ups are costly, were as a quad lnb sould cost around thirty quid.

Or you could use an octto lnb for around fiffty quid.

**satelliteman** · 26-04-2008

In short, less cabling

**HB13DISH** · 26-04-2008

Thanks timbo86 and satelliteman.

But I still don't get it.
I was told that quatro LNB + 4x4 switch is a better system than quad LNB.
Surely the cabling is easier with the quad LNB.

**rolfw** · 26-04-2008

I would like to hear the justification of that, as I can't see any reason why it would be so.

**HB13DISH** · 26-04-2008

Originally Posted by rolfw

I would like to hear the justification of that, as I can't see any reason why it would be so.

Thanks rolfw.

This is exactly what I am looking for.
Perhaps with the quatro LNB it gives better future distribution flexibility, if # of receivers exceeds 4 , using another multiswitch than 4x4 ?

**canofan** · 26-04-2008

A quattro allows you to use individual line amplifiers that are powered by the multiswitch instead of by the receiver.
Those installations that need a line amplifier are better served by a quattro.
Besides, as the switching of the quad switches the local oscillator to the correct polarity it also varies the supply voltage to the LNB port.
With the quattro the voltage on the LNB port is not varied and the polarity/22khz emitted by the receiver serve only as a signal to the multiswitch with no current.
Everytime the receiver is turned off the Quad goes dead and is reactivated when turning the receiver on again.
The multiswitch being on continuously does not subject the LNB to these changes of state.
This implies longer life for the LNB and the receiver.

**rolfw** · 26-04-2008

Well that's certainly the case, just swap out the switch for one with more outlets, but a quad LNB suffices for the average household needs.

**HB13DISH** · 28-04-2008

Originally Posted by canofan

A quattro allows you to use individual line amplifiers that are powered by the multiswitch instead of by the receiver.
Those installations that need a line amplifier are better served by a quattro.
Besides, as the switching of the quad switches the local oscillator to the correct polarity it also varies the supply voltage to the LNB port.
With the quattro the voltage on the LNB port is not varied and the polarity/22khz emitted by the receiver serve only as a signal to the multiswitch with no current.
Everytime the receiver is turned off the Quad goes dead and is reactivated when turning the receiver on again.
The multiswitch being on continuously does not subject the LNB to these changes of state.
This implies longer life for the LNB and the receiver.

Thanks canofan for the post.
I am beginning to see the light, especially the bit about the long life as a result of having the same voltage and polarization for the four sections of the quatro LNB, and without subjecting the LNB to constant changes as a result of frequent zapping.
I also like the bit about the possibility of expanding to more than four receivers using a 4x8 multiswitch (if there is one ?), as the LNB would be situated in a difficult to access location and replacing it can cost a lot of money for the professional installer.

**canofan** · 28-04-2008

Originally Posted by HB13DISH

Thanks canofan for the post.
I am beginning to see the light, especially the bit about the long life as a result of having the same voltage and polarization for the four sections of the quatro LNB, and without subjecting the LNB to constant changes as a result of frequent zapping.
I also like the bit about the possibility of expanding to more than four receivers using a 4x8 multiswitch (if there is one ?), as the LNB would be situated in a difficult to access location and replacing it can cost a lot of money for the professional installer.

You are welcome, you have helped me in the past as well.
There are reasonably priced multiswitches for 4,6,8,12 and 16 receivers, mostly on german online sites.

**rolfw** · 28-04-2008

Hm, I can see where the stabilized voltage may perhaps theoretically extend the life on an LNB and come in useful if line amps are required, but not entirely sure by how much though and whether such a saving would be value for money.

The difference in price between a quad LNB against a quattro LNB and a multiswitch (if only going for four outlets) would be considerable, probably to the degree that it would need to at least double the life of the LNB, purely to break even on the deal.

**HB13DISH** · 28-04-2008

Originally Posted by rolfw

Hm, I can see where the stabilized voltage may perhaps extend the life on an LNB and come in useful if line amps are required, but not entirely sure by how much though and whether such a saving would be value for money.

The difference in price between a quad LNB against a quattro LNB and a multiswitch (if only going for four outlets) would be considerable, probably to the degree that it would need to at least double the life of the LNB, purely to break even on the deal.

In my case, I am willing to pay a lot more for a longer life LNB, just to avoid the replacement cost.
I am sure that anybody with an easy access to the LNB and a DIY replacement would find a quad LNB is a cheaper choice.

**canofan** · 28-04-2008

_http://satserver.de/catalog/default.php?cPath=32_35
using this one supplier as a reference in the effort towards other things being equal:
INVACOM QUAD C 120 LNB QDF-031 0.3dB = Euros 73.95
INVACOM QUATTRO C 120 LNB QTF-031 0.3dB = 50.95
SATMATRIX MULTISWITCH MS 5/4 S 4 RECEIVER= 48.95
The satmatrix is an excellent multiswitch

The quattro/multiswitch
option costs Euros 99.90
The quad solution 73.95
difference Euros = 25.95

You probably would agree that the difference is acceptable.

**HB13DISH** · 28-04-2008

Originally Posted by canofan

_http://satserver.de/catalog/default.php?cPath=32_35
using this one supplier as a reference in the effort towards other things being equal:
INVACOM QUAD C 120 LNB QDF-031 0.3dB = Euros 73.95
INVACOM QUATTRO C 120 LNB QTF-031 0.3dB = 50.95
SATMATRIX MULTISWITCH MS 5/4 S 4 RECEIVER= 48.95
The satmatrix is an excellent multiswitch

The quattro/multiswitch
option costs Euros 99.90
The quad solution 73.95
difference Euros = 25.95

You probably would agree that the difference is acceptable.

Thanks. I agree wholeheartedly.

Another point worth taking into account is that as the multiswitch is usually used indoors and is not subjected to the extreme climate conditions (cold, hot, rain, sun, etc.) then it's life span is probably much longer than either LNB.
Therefore if the quatro LNB goes, the replacement cost is only 50.95 Euro (for the lucky ones who can replace it themselves).

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Difference between Quad LNB and Quatro LNB Information exchange on LNBs, Single satellite, motorised and multi-satellite systems. DiSEqC switches, positioners, motors, actuators, dish-alignment etc.