Advice Needed Positioner + multi lnbs setup with 1 tuner ?

[AtOM13]

I changed recently my Vu+ Duo with 2 dvb-s2 tuners by a OS mini 4k with 1 dvb-s2x tuner.

My setup with Vu+ Duo was:
- positioner on tuner 1,
- 3 lnbs with diseqc on tuner 2 (using another dish)

3 lnbs for "daily" sats Astra/hotbird/Thor to avoid moving the other dish all time.

Is there a way to do the same on OS mini 4k single tuner ?

 

[Captain Jack]

You could cascade switches but you'll need a DisEqC 1.1 uncommitted type in the way to switch between the existing 1.0 switch and the positioner. You then connect your existing 3 LNBs with the 1.0 switch to the 1.1 to daisy chain them.

DiSEqC switch S2/1PCN-W1 | EMP-Centauri

Product description: 2in/1out DiSEqC 1.0 & 1.1 & 1.2 switch for 1 subscriber. The switch can operate in any DiSEqC mode, proper selection is made automatically according to commands sent by receiver. Its usage scope includes switching between single LNBs (using command "Position"), switching...

emp-centauri.cz

There is a possibility of burning out the 1.1 switch driving a motor through it but I've not had issues in the past.

 

[a33]

I changed recently my Vu+ Duo with 2 dvb-s2 tuners by a OS mini 4k with 1 dvb-s2x tuner.

My setup with Vu+ Duo was:
- positioner on tuner 1,
- 3 lnbs with diseqc on tuner 2 (using another dish)

3 lnbs for "daily" sats Astra/hotbird/Thor to avoid moving the other dish all time.

Is there a way to do the same on OS mini 4k single tuner ?

If your tuner can manage giving a diseqc switch command and diseqc motor command in one diseqc command run, there is no problem whatsoever. (Normal receivers would be able to do this, I think (my receiver does). However, there seem to be TVs that don't support this, I heard? But I cannot confirm.)

Several options for the motor:
1. splitted off directly after/before the receiver: split to motor and split to 4/1 diseqc switch (or switch cascade) (you need a splitter with power-through the correct direction, though, and they are not always easy to find). This is my favorate solution.
2. receiver - motor loop through - diseqc 4/1 switch
3. receiver - 4/1 switch - with motor in the path to motor-LNB.

When you have just 4 LNBs in total, there is no need to cascade switches.
When the dishes are far apart, though, cascading switches might be practical.

Greetz,
A33

 

[AtOM13]

Ok I think Os mini can do it : lnb1 positioner lnb2 astra lnb3 hotbird lnb4 Thor...

Is there a risk for receiver or vbox if I try these 4 lnbs together on my diseqc?
It's an Octagon SPU 41/02 :

OCTAGON OPTIMA DiSEqC ODS 41-02 HQ Gold | Octagon-Germany.eu

Otherwise I put a splitter or diseqc like Captain said

 

[a33]

Is there a risk for receiver or vbox if I try these 4 lnbs together on my diseqc?

No, not at all. The V-Box does not need much electrical power via the coaxial cable, so no problem at all.

Otherwise I put a splitter

Be carefull: Many power pass splitters have diodes, and most of the time the diodes are the other way round as what you'd need in this setup.

The Spaun VBE-2P splitter (NOT the VBE-2PD !!) however, would be perfect.

These might also be good (not checked!): Dynaflex S-222 or Dynaflex S-202

Also: KSP2FRPP 2 Way F Type Splitter 5-2400 MHz Reverse Power Pass (but you don't need those reverse diodes!)

I myself use a König FC-2SPLT-KN for it, but it is specified 5-1000 MHz (though I have no troubles at all).

I also found these splitters on the internet, that should do the job (though you never know if the information or the pictures on the internet are completely trustworthy);
holland hfs-2p
velleman (vm) cv028
Channel Master CM-3212HD
Power Plus PS02 Splitter
I would chose the cheapest (these high prices are often because people want them ASAP). The choice is yours.

(source: Installazione parabola motorizzata )


By the way: You could test-wise use a simple T-piece. It might however cause some impedance mismatches.
On the other hand, I've read about problems in setups where the loop-through of the V-Box is used, so I don't know which is the worst alternative....

or diseqc like Captain said

Especially practical, when the two dishes are at different directions from the receiver.

Greetz,
A33

 

[AtOM13]

Ok I think Os mini can do it : lnb1 positioner lnb2 astra lnb3 hotbird lnb4 Thor...

So I did some tests, and this setup is ok , thanks !