Combining DTT and Satellite signals on one Coax

ULMarc

Hi,

What method should I use for combining DTT and Satellite signals on one cable to feed to a combo box?

I'm well aware that using a diplexer will combine an analogue arial feed with a satellite one as they exist on separate bands. It makes sense to me that it would also work for a digital signal. But I suppose I'm just looking for definitive confirmation before I put together my final cabling plans.

Thank you

Sam Russell

ULMarc wrote: »

Hi,

What method should I use for combining DTT and Satellite signals on one cable to feed to a combo box?

I'm well aware that using a diplexer will combine an analogue arial feed with a satellite one as they exist on separate bands. It makes sense to me that it would also work for a digital signal. But I suppose I'm just looking for definitive confirmation before I put together my final cabling plans.

Thank you

A splitter/combiner will combine UHF signals with the Sat signal in the one cable. It does not matter whether the UHF signal is digital or not.

Use the splitter/combiner to unite the aerial and sat signal at the dish end, and then use a simillar unit to split the two signal at the TV. Works fine for me.

excollier

I have used the combiner/splitter too, simple and cheap.

ULMarc

Thanks guys. Think I'm set now. Just have to make my final decision on a receiver.

12 element

Do you realise that most if not all combo boxes are fed with two separate cables so you don't have to combine the two signals at all. If you can it would be advisable to run two separate cables.

Antenna

12 element wrote: »

Do you realise that most if not all combo boxes are fed with two separate cables so you don't have to combine the two signals at all. If you can it would be advisable to run two separate cables.

i believe its the downlead the OP is on about, not the box input. I have never heard of a box that would take Terrestrial and Satellite on the same input.

I would prefer to run seperate cables too (if possible). There can be noticeable loss with an unamplifed aerial (especially at high UHF) when combining, and there is 'less to go wrong' with seperate cables.

The Cush

12 element wrote: »

Do you realise that most if not all combo boxes are fed with two separate cables so you don't have to combine the two signals at all. If you can it would be advisable to run two separate cables.

If you have only one cable to the tv point and running a second cable is not an option, combining a terrestrial and satellite feed into one cable from the attic to the tv point and splitting it again there may be the best course of events.

12 element

The Cush wrote: »

If you have only one cable to the tv point and running a second cable is not an option, combining a terrestrial and satellite feed into one cable from the attic to the tv point and splitting it again there may be the best course of events.

I agree 100% Cush, it's just that the OP mentioned cabling plans so I presumed he is in a position to run two cables rather than one!

charlie1966

You can also get dual or quad LNBs with terrestrial I/Ps, to combine the 2 signals and then use a diplex wall plate or a sat/terrestrial splitter to split the signal to your combo receiver.

ULMarc

Antenna wrote: »

i believe its the downlead the OP is on about, not the box input. I have never heard of a box that would take Terrestrial and Satellite on the same input.

I would prefer to run seperate cables too (if possible). There can be noticeable loss with an unamplifed aerial (especially at high UHF) when combining, and there is 'less to go wrong' with seperate cables.

That's right. There's 1 coax running to each TV point in the house. At the moment I will only be putting in 1 receiver in one room but may add more in the future.

What I'm planning to do now is place a UHF arial and a satelite with a quad LNB on the roof and feed to my attic. Then use the existing cabling in the house to feed to the 3 TV points.

Sounds alright doesn't it?

I suppose one more question is will I need to amplify the UHF signal once I split it 3 ways or can I chance not amplifying it until I test it?

Cheers guys. I hope the discussion helps others too.

The Cush

Similar thread here recently - http://www.boards.ie/vbulletin/showthread.php?t=2056099284