TV and Sat outlet

TheDriver

HI fOLKS,
Anyone know where I can get wallplate that splits a signal up into terrestrial and sat, was thinking of getting Tony's combiner for attic but would like a wall plate for the sitting room but proving difficult, even Dwyers here in Cork don't have them!!

One other question, if dish has twin lnb, does one pull signal from the other i.e. if both on at same time does the signal draw from each other or are they totally seperate as was told i need a bigger dish if want twin lnb?

watty

Triax, Polytron, and other make them. Also in Maplin. Usually they have a FM Radio connector too.

You don't need a bigger dish, but a Quad LNB makes more sense.

There is a slight difference between, single, twin, dual, quad, quattro and octo LNBs in signal quality but insignificant.

TheDriver

Thanks Watty, found them on maplin website with radio one so should do the trick with Tonys combiner, wasn't anxious to use a second combiner in sitting room to split as Tony's website suggests from a visual perspective.
Why would a quad make more sense? Only have 2 rooms I want it in and was thinking if things change down the road i could just buy a quad then.
Last question: is there anything wrong with a steel dish over a plastic one?? (bet you love us newbies who don't have a bulls notion but the sense of achievement from diy job is great!!)

dobsdave

I also have a question,(I didn't want to open a new thread for it).
If I have a dish with a single lnb,the cable comes into the house and I then split it and send the two ends to seperate receivers.
Is that ok to do? or should I use a twin LNB? Whats the difference.

Thanks in advance.


Dave

dobsdave

dobsdave wrote:

I also have a question,(I didn't want to open a new thread for it).
If I have a dish with a single lnb,the cable comes into the house and I then split it and send the two ends to seperate receivers.
Is that ok to do? or should I use a twin LNB? Whats the difference.

Thanks in advance.


Dave

No, for two reasons:

1: It could potentially damage the LNB. I'm thinking that if both receivers were sending power up the cable things could get nasty.

2: Even if it does work, both receivers will only be able to watch channels on the same polarisation.

dobsdave

Ok thanks Karsini.

watty

Actually it is unlikely to damage the LNB. But for Horizontal the volts is 18V to 19V and for Vertical reception 13V to 14V, so either both receivers will be damaged or the Horizontal channel wins!

Also high and low band is selected by a 22kHz tone on/off. Again one receiver will "win" and the other not have a picture.

Just in case anyone sees the Power on/off and 22kHz on/off in the menu!

So the coax cable can have any one of four sets of channels.

To really split satellite signals (needed really for more than 4 PVR receivers), you need a Quattro LNB, each cable is one of the four possibilities and thne it can be split. A special box called a multiswitch pretends to be an ordinary LNB to the Satellite Tuner.

Multiswitches with up to 16 inouts (four satellites) are common. Up to 1000 receivers could be fed. There are also Multiswitches that simulate a Diseq Motor allowing a large number of fixed LNBs on one or more dishes for more than 4 satellites without the motor/dish move delay!

TheDriver

Watty could i verify one thing, if I have a twin lnb, i can have each wire going to its own receiver and no need for switch or anything?
Or indeed a quad I could have 4 wires each going to its own receiver in different rooms and no switch required?

Tony

TheDriver wrote:

Watty could i verify one thing, if I have a twin lnb, i can have each wire going to its own receiver and no need for switch or anything?
Or indeed a quad I could have 4 wires each going to its own receiver in different rooms and no switch required?

Thats correct