Cable Connector Question

Clum

When my house was built I had the electrician run coaxial cable from various rooms to the attic where they would eventually connect to either an aerial or a dish. When I moved in I got Sky to come along and install my dish and a Sky box in my living room. This all works fine.

I'm now trying to connect an old Sky box in another room to the dish. The kind man from Sky ran two extra cables from the dish to my attic for me. I have cable running from the room to the attic so I thought all I had to do was connect the two cables in the attic (which I have done using f type connections) , and then connect the wall plug in the room to the satellite box. However this doesn't work, and my sat box just says no reception is found (or something to that effect).

If I bring the box up to the attic and connect the cable (just one, it's not a + box) from the dish directly to the box it works fine. I can also get a reception in the room if I connect the cable to the aerial I use for DTT so that cable works ok.

The wallplug in the room is a normal TV coax connector. Am I making a total beginner's mistake by expecting this connection to work? The satellite box is connected to the wall plug using a cable that has a coax connector on one end (for wall plug) and f type connecter at the other end (for the box).

Do I have to use a F Type wall plug? Or should this set up work and the fault could be with me putting the connectors on incorrectly? Or something else?

Thanks in advance for any guidance.

MrSneeg

most likely an isolated wall plate, remove it an see if there is a circuit board at the back,
isolated plate wont let the sat box pass a voltage to the lnb, resulting in no signal.

remove the wall plate and connect directly onto the cable with an f coupler.

LIS

Mrsnegg is right assuming the connections you make are good.them isolation plates are only really designed for aerials in most cases

MrSneeg

LIS wrote: »

Mrsnegg is right assuming the connections you make are good.them isolation plates are only really designed for aerials in most cases

why explain?

steveon

Some wall plates have a circuit board at the back that dont allow power to go throught them, and therefore the skybox cannot power the lnb to make it work, hence why they will often have to be bypassed or replaced with one with a metal back.

The idea of the circuit board for an aerial is in case an aerial gets hit by lightning but persoanally I wouldnt expect them to be very sucessful.

steveon

Some wall plates have a circuit board at the back that dont allow power to go throught them, and therefore the skybox cannot power the lnb to make it work, hence why they will often have to be bypassed or replaced with one with a metal back.

The idea of the cirrcuit board for an aerial is in case an aerial gets hit by lightning but personaly I wouldnt expect them to be very sucessful.

steveon

Some wall plates have a circuit board at the back that dont allow power to go throught them, and therefore the skybox cannot power the lnb to make it work, hence why they will often have to be bypassed or replaced with one with a metal back.

The idea of the circuit board for an aerial is in case an aerial gets hit by lightning but personaly I wouldnt expect them to be very sucessful.

Liameter

Clum wrote: »

The wallplug in the room is a normal TV coax connector.

Haha. TV plugs are actually not even suitable for TV signals, never mind LNB signals!
See http://www.satcure.com/reviews/review144.htm#02

Clum

Thanks for all the replies.

I took off the wall plate to see what was going on. It wasn't an isolated wall plate, it turns out I have two cables running in to the one connection. I think the idea was that I could run both aerial and satellite to the one connection.

Whatever the idea they weren't connected very well with loads of foil and metalic shield all over the place. I got the cable for the sat box working by tidying up the connections. Must get a dual connection wall plate now so I can connect the terrestrial aerial cable too.

JHet

Not a big fan of those circuit board wall plates.

I used the following:

Its a low loss tv plate, basically an F joiner which avoids any potential interference between the lnb and reciever.

http://www.audiospares.com/product.php?productid=1153&cat=299&page=1