MultiSwitch - terrestrial antenna question

[Huevos]

When you use a diseqc switch where one of the inputs is a terrestrial antenna what happens at the termination of the single down lead inside the property?

 

[PaulR]

I don't think that will work.

A diseq switch is used to change between alternative LNBs or dishes. It simply won't do anything to a terrestrial aerial input as you have to use a satellite receiver to issue the Diseq commands and that won't recognise anything on terrestrial frequencies.

 

[Robbo]

I think more information is needed on precicely what is being connected and how, as the question is too vague to answer.

 

[Huevos]

I don't think that will work.

A diseq switch is used to change between alternative LNBs or dishes. It simply won't do anything to a terrestrial aerial input as you have to use a satellite receiver to issue the Diseq commands and that won't recognise anything on terrestrial frequencies.

There are switches, for example EMP Centauri, that have an extra input for a terrestrial antenna. Obviously the terrestrial signal is permanently available on the down lead irrespective of diseqc selection. I just want to know how the termination of the down lead is wired.

 

[Robbo]

An example model number?

With a multiswitch, the input terrestrial signal is separated at the downlead with a diplexer.

 

[Huevos]

An example model number?

_http://www.emp-centauri.cz/products.php?page=products&id_kateg=5&id_pkateg=45&id=284

With a multiswitch, the input terrestrial signal is separated at the downlead with a diplexer.

Have you got an example of a diplexer?

Also, are the terms diseqc 1.1 and non-committed synonymous? And diseqc 1.0 and committed?

 

[Robbo]

Ok, had a look at that, like it. Ideal for someone with a T90, plenty of inputs.

Yes, that would be a diplexer that is needed for the terrrestrial separation.

Diseqc 1.0 are always committed, I think Diseqc 1.1 can be either.

 

[Huevos]

Yes, that would be a diplexer that is needed for the terrrestrial separation.

Ok. I know what a diplexer is because I used them in amateur radio but what does a domestic one look like? Is it just built in to a socket front?

 

[rolfw]

An example of triplexed outlet plates, these are screened and come with a couple of different connection methods from different suppliers.
_http://www.tvlink.co.uk/wallplate.htm

 

[satelliteman]

Also these...

 

[Huevos]

How much of an insertion loss are we looking at here? I mean, if the tv or sat signal were weak would you avoid this method?

 

[satelliteman]

Typical insertion loss around 0.5dB on UHF and 1.5dB on IF.
Also there will be an insertion loss on the DISEqC switch.