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Using more than one diseqc switch to dual tuner pvr receiver

daro2096

Regular Member
Messages
323
Likes
28
My Satellite Setup
No setup at present
My Location
Consett, Durham
#1
Is it true what this shop (based in Newcastle) says about using more than one diseqc switch on dual or quad lnbs?

Problems of using more than one diseqc switch
with multiple LNBs
One our web site you will find 2, 3 and 4 LNBs on one fixed dish
See 2, 3 or 4 satellites on 1 fixed dish
You will also find options for the fitting of a twin or quad LNB as a substitution
with ONE of the 3 or 4 LNBs so that a popular satellite can go to several receivers.
e.g. putting a twin or quad in the 28E position so that a Sky digibox or Sky + can
be connected as well as the CI receiver to that LNB That means the CI receiver and the
Sky box both are connected to 28E but the CI receiver is also connected to other
satellites through ONE diseqc switch.
You will not find on our site 2.3 or 4 satellite kits with twin or quad LNBs and
more than one diseqc switch to either two receivers or a twin tuner receiver.
REASON.
Whilst it should all work in theory, in practice
(depending on the combination of switch positions) you can get no signal on a
satellite when it should all work. This is because twin LNBs and Quad LNB should
be fully connected to work properly. It may be OK to connect to two outputs of a quad
but you have to experiment to find out which two. With a twin, one side has a good
connection to the internal power supply circuit and the other is almost like a passive
device and relies on power from the second receiver to work properly
If you connect two or more diseqc switches, they take power away from some of the
outputs of the twin or quad LNBs (depending on the switching at the time) and
things go wrong.
IS THERE A SOLUTION?
Yes there is - a new solution - but quite expensive. It will be on our site soon as
an option on all of the twin tuner receiver pages eventually but see it at multiswitches
The 9 in and 6 out and the 17 in an 6 out ...etc. This is a product designed to
do the job. Quatro LNBs must be used but all the switching is done inside the unit
and there are no power issues
 

jphili

Regular Member
Messages
65
Likes
0
My Satellite Setup
Twin monoblock and twin LNB on 80cm transparant dish rigged for twin reception from HB Astra 1 and 2 + TopField TF 7700 HDPVR + TwinHan VisionDTV
My Location
BE
#2
Have been using a setup with Twin LNBs and Twin Monoblock with two DisecQ 4x1 going to a twin receiver for over a year now, and haven't noticed an issue so far.
 

rolfw

Believe it when I see it Admin.
Staff member
Messages
37,652
Likes
1,272
My Satellite Setup
See signature
My Location
Berkshire
#3
It will work in the majority of cases, all they are doing is covering their backsides against the odd occasion where it may not, as they don't want the kit sent back.:)