LNB for fixed Hispasat

hi you can have quad lnb not prob , 2 for your doble turner stb and 2 aout free maybe one day you have another stb in to another room , but aslo is good have another aout in case one aout burn ,and you dont have to change the lnb .

Are you 100% sure the communal system has two satellites on it? Can you find out. If its only one satellite you can just use a normal DISEqC switch to combine the feeds from your satellite dish and the communal system.

If the communal system has 2 satellites on it, you may still be able to combine the three although it gets a little more difficult as you have to go down the route of using committed and uncommitted DISEqC switches which I'll be totally honest i don't have a huge amount of experience with, although i know people who have done this before.

Nano

For simplicity i would just stick tuner one on the communal system and tuner two on the dish.

You can put all three on one tuner but you will need to find an uncommitted diseqc switch.

The box would then need to be setup so if you select the Hispasat dish it would just choose port AA on the uncommitted switch.

If it wanted Astra @19.2e which for arguments sake is on port AA on the communal system it would need to select port AB on the uncommitted switch and port AA on the committed switch.

If you wanted Hotbird @13e which for arguments sake is on port AB on the communal system it would need to select port AB on the uncommitted switch and port AB on the committed switch.

I think you can see how it works now. the biggest issue you will have now is getting switches that will do the job. like i said, i have never tried this setup but i know people who have.

This may explain it a bit better. This article was written by user Canofan on the TW forum

Quote

I mean this thread as an introduction for constructive discussions on the matter of DISEqC switching and as a platform that tries to solve problems arising from such applications.

This description applies to a single user point of view because DISEqC 1.1 applies only to a single receiver.

Once you decide to go the multi LNB way, you are bound to use DISEqC switches. There are 2 types of those:
committed switch DISEqC 1.0 and
uncommitted switch DISEqC 1.1

1- The DISEqC 1.0 supports a maximum of 4 LNBs. This exists in a passive weatherproof version (gets its power from the receiver), and
an active version multiswitch (gets its power from a mains outlet and usually not weatherproof) used for quattro LNBs and single band LNBs like NORSAT, CALAMP and SMW, which are then powered directly from the multiswitch, and where no switching within the LNB is required, this last version allows the use of multiple receiver tuning each to a different satellite/transponder.

2- The DISEqC 1.1 supports more than 4 LNBs, but its main advantage is its possibility to cascade (daisy chaining, as someone put it) with 1.0 DISEqC switches of the two types described above. They exist in the present day as:
2 input when cascaded with DISEqC 1.0 switches max 8 LNBs,
4 input when cascaded with DISEqC 1.0 switches max 16 LNBs,
8 input when cascaded with DISEqC 1.0 switchesmax 32 LNBs and
10 input when cascaded with DISEqC 1.0 switches max 40 LNBs.
This applies whether switching or "quattro lnbs with multiswitch" are used, and of course, using the outputs from both types simultaneously is possible.

3- You can also cascade two levels of NC 1.1 switches.
You just treat the first level NC as if it were a 1.0 DISEqC.
You put the DISEqC parameter on 1.0 and select the port, but instead of using AA, AB, BA OR BB, you go further down the ladder and choose one of the numbers 1 to 16.
The actual limit, with a Non Committed 16 port switch ( I do not know if one exists), should in theory be 16X16= 256 LNBs.

Passive DISEqC 1.0 and 1.1 switches when used for switching LNBs do carry power from the 14v/18v/22khz from the receiver to the LNBs.
Multiswitches use the 14v/18v/22khz from e.g receiver A, not to power the LNB, but as a signal for the multiswitch to select the correct polarity for receiver A. This imposes less strain on the switches and receiver.
If all LNBs are quattro (renown to be virtually fail proof) no strain at all is imposed on the receiver or the cascaded switches, as they do not have to carry current but only voltage signal. This shows the advantage of using such equipment for reliability, stability and durability in the long run, especially when it is undesirable to access LNBs.

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If you think thats complicated wait until you chuck a motor into the scenario lol