Poor signal using a loftbox

[Zhadnost]

I am in the process of installing a loftbox at home, and the current setup is drawn below.

There is no return feed from the Living room hense the loop (and the living room TV is plugged into port 1).

I am using entirely Global Communications equipment.

If I connect the triplexing wallplate to any of the outputs, I don't get a TV signal.

If I connect the duplexing wallplate to all the outputs, (as I gather I should do), I get a TV signal that is quite weak,

If I connect an ordinary passive wallplate to all the outputs (which I have read can damage the loftbox), I get a strong signal from all the outputs.

The TV antenna has an MRD that is powered by the loftbox.

I don't use the TVLink device (don't have Sky).

Can anyone think of something I may be getting wrong?

TIA for any help with this matter.

 

[vex]

Ok, silly questions first.

1, You have got the loft box powered havent you? The line powering only works with a sky box.

2, Which port are you connecting to when you use the triplex faceplates?

Ok there over with.

I also wasnt sure that the loftbox can actually power a masthead device, I would check on that first.

 

[Zhadnost]

Thanks for the reply.

Ok, silly questions first.

1, You have got the loft box powered havent you? The line powering only works with a sky box.

Yes, I bought a unit with the PSU.

2, Which port are you connecting to when you use the triplex faceplates?

one of the 8 TV out ports, I didn't think I could connect it to any of the others.

Ok there over with.

I also wasnt sure that the loftbox can actually power a masthead device, I would check on that first.

According to the Installation guide that comes with it, will supply power to the TV ANT for a Masthead device up to 100mA. (states on the front page and on the first inner page).

 

[vex]

Sorry miss understanding.

On the triplex wall plate, which one are you connecting your TV to?

Things are pointing to a faulty loftbox IMO, from the diagram and info you have provided I can not see anything you are doing wrong.

Chris

 

[Zhadnost]

Sorry miss understanding.

On the triplex wall plate, which one are you connecting your TV to?

The TV is being plugged into the port marked TV on the faceplate (The Male connector).

Things are pointing to a faulty loftbox IMO, from the diagram and info you have provided I can not see anything you are doing wrong.

Chris

Well, that's a promising start Thanks for the reply.

 

[vex]

One final thought, your not running extreme cable lenghts are you.

Oh and the red led is coming on on the Loftbox?

As I said, everything is pointing to a faulty loftbox as the losses through a triplexer and diplexer are to great, when they should be fine and countered by the amp in the loftbox.

 

[Tesla]

Why have you looped the UHF2 and Living Room sockets?

Are you going to be connecting other Aerials to the loftbox?

Is the PSU plugged directly into the loftbox or is it remotely powered from the PSU, if remotely powered then the Triplex plates are probably not allowing DC pass.

 

[nickp8]

Dont use a duplex wallplate if you are not distributing fm. I used standard screened wall plates in the rest of the rooms and the triplex in the living room. It is recommended to use screened ones.

Dont think you can loop the living room output directly into the uhf2 as its a combined signal. It has got to be seperated first which is what the triplex plate does.

Connect the cable from the living room output to the triplex plate. Then the aerial output on the triplex plate to the uhf2 input on the loftbox.

Nickp.

 

[vex]

Nickp8,

There is no need to pass the living room feed thought a triplexer and you can loop it derectly to the UHF2.

Alternatively you can connect the aerial directly to the UHF2 port.

 

[Zhadnost]

Nickp8,

There is no need to pass the living room feed thought a triplexer and you can loop it derectly to the UHF2.

Alternatively you can connect the aerial directly to the UHF2 port.

That is what I did first time round, I only changed the setup when I found the loop diagram in a guide.

I do plan on adding a VHF antenna at a later date (I have the antenna), I was just keeping things as simple as possible till everything gets sorted out.