Advice Needed Unicable LNB

[Offtensive]

I am looking to get a unicable lnb for 28.2e, I am leaning towards an inverto. Has anyone used either of these?

It will feed a Gigablue UE4K, Octagon SF8008 and a Samsung TV. I need to double check if the latter is compatible with unicable (I do think I have seen this option in the setup menu but need to verify).

Also, what splitters are best to use? There will be 1 splitter outside feeding 2 rooms, with a second splitter in each room.

I have seen the standard inverto splitters. However, for the outdoor splitter, should I put it in a junction box to waterproof it? I have not been able to locate one that comes with the weatherproof cover that my diseqc switches have.

 

[Offtensive]

Would this be suitable as an outdoor splitter?

Labgear 4-Way Outdoor Splitter - Screwfix

Order online at Screwfix.com. Ideal for splitting aerial or satellite signals 4 ways. FREE next day delivery available, free collection in 1 minute.

www.screwfix.com

 

[ozumo]

The Inverto splitter in the first post looks to be a combiner, not sure if it'll work in reverse as a splitter or pass power. A splitter with same external design should be okay if waterproofed with self-amalgamating tape.

The second splitter would work but only passes power from one port, the receiver connected to it would need to be always powered on or a power inserter used depending on the power needs of the LNB.

 

[Offtensive]

Thanks, I posted the wrong inverto product. This was the one I meant to Unicable II™ 2- way splitter, 5-2400 MHz

Thanks for the labgear spot, I didn't notice that. Antiference have weatherproof splitters, but it seems that it is only suitable for aerials.

Antiference MS04LTE

4 Way LTE Masthead Combiner SplitterA range of fully screened F-Type masthead splitters for splitting or combining UHF or VHF signals. A DC pass feature enables the use of a pre-amp. Splitters can be mast or wall mounted.MS04LTEComplete range of external fully screened splittersF -type...

www.chesterdigitalsupplies.co.uk

I think I may just go for the inverto with self-amalgamating tape and see if I can place it directly underneath the soffit.

 

[a33]

The Inverto splitter in the first post looks to be a combiner, not sure if it'll work in reverse as a splitter or pass power. A splitter with same external design should be okay if waterproofed with self-amalgamating tape.

The second splitter would work but only passes power from one port, the receiver connected to it would need to be always powered on or a power inserter used depending on the power needs of the LNB.

For a Unicable/JESS setup. it is best that in the cable path between each receiver and the LNB (or multiswitch), there is only ONE diode! So in this case that would mean one splitter without diodes near the LNB, and two splitters with diodes near the receivers.

For JESS/Unicable, I think a splitter without power pass (as the labgear) on all ports, would cause trouble for the non-powered ports (not meant to, in the Unicable philosophy).

Fixing some sort of rain cap over an outside splitter would also work perfectly.

Greetz,
A33

 

[Terryl]

If your going to be running 2 receivers then it's best to use a dual output LNB,(one coax lead to each receiver) using a splitter will divide your usable signals in half, (unless it's an amplified splitter or switch) you may run short in the available signal to each receiver. And if your trying to split it again in each room then a quad output LNB should be used.(one lead to each receiver)

 

[Offtensive]

If your going to be running 2 receivers then it's best to use a dual output LNB,(one coax lead to each receiver) using a splitter will divide your usable signals in half, (unless it's an amplified splitter or switch) you may run short in the available signal to each receiver. And if your trying to split it again in each room then a quad output LNB should be used.(one lead to each receiver)

I've bought a Unicable. So this one gives 32 userbands.

On the note of signal loss, should I be taking note of the db figures on the switches?

For a Unicable/JESS setup. it is best that in the cable path between each receiver and the LNB (or multiswitch), there is only ONE diode! So in this case that would mean one splitter without diodes near the LNB, and two splitters with diodes near the receivers.

With the inverto splitter, it mentions on there website that there it has a diode.

The Unicable splitter embeds protective diodes to guarantee DC isolation between connected set top boxes.

I bought this Televes one today as one of the few I could find in the UK that had all the ports on the bottom and DC pass through on all ports. I am not certain if it has a diode as there was no mention on site. It seems that for this one, I need to use it without F connectors.

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www.televes.com

 

[Offtensive]

 

[Terryl]

I've bought a Unicable. So this one gives 32 userbands.

On the note of signal loss, should I be taking note of the db figures on the switches?



With the inverto splitter, it mentions on there website that there it has a diode.

The Unicable splitter embeds protective diodes to guarantee DC isolation between connected set top boxes.

I bought this Televes one today as one of the few I could find in the UK that had all the ports on the bottom and DC pass through on all ports. I am not certain if it has a diode as there was no mention on site. It seems that for this one, I need to use it without F connectors.

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www.televes.com

Yes all devices inserted into a satellite down lead coax will add signal loss,(usually 3 dB or more) unless it has an externally powered amplifier.

So you should keep track of what is inserted into the system, the coax has loss, a ground block has loss, even the "F" connectors add loss.

On a standard 2 way RF splitter there will be 3 dB signal loss, this is 1/2 of the incoming RF signal, (100 uV input = 50 uV output to each port) on a 4 way splitter there will be a 12 dB signal loss. (100 uV input = 25 uV output to each port)

This is where an amplified switch comes into the picture.

Note: the 100 uV is used as an example only, uV= Micro Volts.

 

[Terryl]

View attachment 144332

That looks like an in-door only splitter as I see nothing to keep the rain out.

 

[Offtensive]

That looks like an in-door only splitter as I see nothing to keep the rain out.

It is an indoor splitter, there’s an optional rain cover for weather protection. However, I’ve only been able to locate it in Spain so far. That option incurs a €50 shipping fee

I will probably go for this one, so I can keep the f connectors on for the time being.

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www.televes.com

 

[a33]

If a (sat) splitter has arrows on it, from the 3 outputs (receiver end) to the 1 input (LNB end), it has diodes in it (in the direction that you want).
The arrows are often in color red.
The descriptions on websites are not always sufficient....

This is to help you find suitable splitters.

I'm not sure if you could also easily buy a 4/1 splitter, and have a port to spare (for future use)? (I would think the extra (open) port would not be a problem, but as indicated: I'm not sure, from own experience.)

Greetz,
A33

Edit: I'm not sure whether I could post a website link here, with a Photo of such a splitter? Is that allowed?