upgrading from single output to dual output LNB on motor dish-how to wire up?

[ALIEN1X]

Hello,
I currently have a motorised setup with single output LNB connected to my smart tv in built tunner. I have a seperate Linux tuner which i connect if I want to use the motorised option.

I use the tv inbuilt at tunner as its easy for my father to use for watch ng free to air on 28.e as this has more channels than freeview.

I want to upgade my LNB to dual twin output type so i can add a second tv sat tunner in another room, I will not be using that to turn the motor.

I chose the above config to avoid signal conflicts when i was using a sat splitter between the 2 tvs which I then learnt that it causes channel conflict problems.

The question is how do i cable up a dual output LNB?
Do I cable it up the same as the single LNB but use the second LNB out put to connect directly back to my second tv sat tunner?

[abu baniaz]

The second cable will go straight to the tuner on the other TV. It will lose signal when the motor turns.

The other port will be exactly as it is now.

[ALIEN1X]

Hi,
So if the 2nd output from the LNB goes back to the new second tuner TV, my intension is not to turn the motor as it will be fixed at 28.2e.
(The motor will be there for convienence if I want to use the Linux sat box)

Can both tvs work at the same time regardless of what channels are selected at 28.2 on each each tv and avoid signal conflict?

What sort of 2 output single LNB can I upgrade too?
My current lnb is a triax GSTAT on a 90cn triax dish

Im in the london area viewing FTA channels

I attached a picture of my current set up

[Joe_90]

Yes the two TVs will work independently if they are fed by separate cables. As @abu said, your father's TV will lose signal if you use the motorised option to point to any other satellite.


EDIT - I just saw your photos which you added to your previous post. As @ronand posted, any universal LNB with a 40mm collar will fit that dish. However, you will struggle to maintain signal lock on weaker satellites with your setup as the mounting is not stable. With such a long pole, anchored at only one end, the dish will exert considerable force in any sort of wind and move off focus. It may even break the pole if you get gale force winds. See my motor mount:



point_astra_28E.jpg

[ronand]

Any universal twin lnb to fit a 40mm collar will do the job. World of Sat stock them

world-of-satellite.co.uk/satellite-and-terrestrial/universal-and-unicable-lnb/gt-sat-gt-tl1-0.1db-universal-twin-compact-lnb

If the dish is pointed at 28.2E then both receivers can work independently of each other.

[ALIEN1X]

Many thanks for your help everyone:

[ALIEN1X]

Hi regarding post the LNB mentioned, is that the best quality LNB that can be used or are there better ones?
Is it a high gain LNB I assume that may be better?

As regards to post 4, yes I'm aware of the issues of the pole moving, its somting I need to work out how i can restrain the top of the pole to make it more ridgid.
However, there has been times when the wind turns the dish around the pole no matter how much i tighten the bolts on the clamp.AS the pole is split in 2 sections that slot into each other its possible the pole swings round with in that slot.

That is the best location I can put the dish, so I may need to find a better and stable free standing mount for the dish and motor.

[ronand]

Its just an example of a twin lnb. You can spend plenty of money if you like. If you are watching the main european satellites then any lnb should be fine. Maybe a high quality one for weaker satellites/feed hunting. Get a steel galvanized pole and dig a hole about 3 feet deep and fill it with concrete. Just make sure the pole is 100% vertical. You wont need to support it at the top and it will never move. The pole in the picture doesn't look very heavy.

[Joe_90]

Chasing LNB noise/gain figures is a worthless exercise unless you are feed hunting with specialised kit and a very stable accurately aligned platform. Just get a well known make and it will handle the signal levels on most sats. Dish size is what is important as regards signal capture. Though, larger dish size requires a more accurate set-up as the beamwidth is narrower. A bigger dish creates a bigger wind load, so not ideal in your case. As @ronand says, a galvanised steel pole (like scaffolding pole) might be better in your setup if you can dig a big enough hole and use enough concrete. Most dish fittings won't accommodate anything bigger that about 2" (50mm) diameter poles.

[ALIEN1X]

thanks, looks like i got some work to do in the summer