Sky and Saorview Signal on One Coax

rebellad

I have my Sky Box in the attic feeding into a distribution amplifier sending the signal to 3 tv's in the house. I have 2 saorview compatible tv's and I now want to send the signal from the aerial in the attic to these tv's on the same coax. I have plugged the aerial into the sky box aerial in connection and I can get the Saorview channels on the tv fine - however it is interfering with the Sky signal now. Is there anyway to prevent this from happening - I only have the one coax going to the rooms.

The Cush

Change the Sky box RF output channel, in the menu, away from the conflicting Saorview/analogue UHF channel/frequency to somewhere in the 60s and retune the TVs to the new channel/frequency.

http://www.ukfree.tv/helpme.php?faqid=1107051117

Edit: Analogue TV still use some frequencies in the 60's from some transmitters, they will have to be avoided too. Do you know which transmitter you receive Saorview from?

rebellad

Thanks for that The Cush - will give it a go tonight. I think I am using the Mitchelstown transmitter

The Cush

rebellad wrote: »

Thanks for that The Cush - will give it a go tonight. I think I am using the Mitchelstown transmitter

A UHF channel somewhere in the 60s should be OK in that case [until they launch mobile service in that part of the band of course, maybe sometime next year. A discussion for another day).

rebellad

Tried that last night and has helped a bit, still a bit of ghost vertical lines going up and down the screen. The only other thing I can think off is that I am using an indoor amplified aerial for the saorview so I wonder is that interfering with the signal. Might look at putting up an outdoor aerial for the saorview over the weekend. Thanks again for the help

Ronnie Raygun

What channel did you use for the Sky RF output? Maghera analogue (UHF channels 66 & 68) could be a factor in your part of the country.

rebellad

Ronnie Raygun wrote: »

What channel did you use for the Sky RF output? Maghera analogue (UHF channels 66 & 68) could be a factor in your part of the country.

Tried a range to be honest - it was set at 68, so tried high and low, settled at 64 in the end which seemed to be the best...

STB

rebellad wrote: »

Tried that last night and has helped a bit, still a bit of ghost vertical lines going up and down the screen. The only other thing I can think off is that I am using an indoor amplified aerial for the saorview so I wonder is that interfering with the signal. Might look at putting up an outdoor aerial for the saorview over the weekend. Thanks again for the help

You are using an amplified aerial in the attic with a distribution amplifier in the attic ? What kind ? One of the small indoor "20db" aerials ?

That is causing your RF overload issues. Those yokes pull all kinds of crap in and will splatter everything if sent through a distribution system.

The Cush

rebellad wrote: »

I have my Sky Box in the attic feeding into a distribution amplifier sending the signal to 3 tv's in the house.

rebellad wrote: »

The only other thing I can think off is that I am using an indoor amplified aerial for the saorview so I wonder is that interfering with the signal.

Use and abuse of TV booster amplifiers.

An outdoor aerial would be recommended, depending on signal strength a standard aerial mounted in the attic might work.

rebellad

STB wrote: »

You are using an amplified aerial in the attic with a distribution amplifier in the attic ? What kind ? One of the small indoor "20db" aerials ?

That is causing your RF overload issues. Those yokes pull all kinds of crap in and will splatter everything if sent through a distribution system.

Ah that makes a lot of sense when I think about it now!

The Cush wrote: »

Use and abuse of TV booster amplifiers.

An outdoor aerial would be recommended, depending on signal strength a standard aerial mounted in the attic might work.

Have a standard aerial up there but the Saroview picture keeps breaking up so will look to mount it on the chimney over the weekend.

Thanks again for the help folks - should have came on here first!!

rebellad

Decided with the beautiful weather we were having last night to move the aerial around in the attic to see if I could improve the signal and lo and behold managed to find a spot where the signal is perfect so have the saorview up and running on one tv now with no affect on the Sky signal. However on the other TV I have a small problem, I tuned in the channels and they are all found however when I go to Rte1, Network2 they show up for a couple of seconds and then the screen goes black. TV3, TG4 and 3e all work fine. It is a Sharp TV about 4 years old - I understand that if the tv didn't have the correct tuner that all the channels would wouldn't show and I would only have sound. Has anyone come across this before??

Genghis

Did a similar project in my house over the last few days. Last night got everything to work perfectly (at last). Now have Saorview and an RF out channel from the Digibox in Kitchen, kids room and bedroom, along with Saorview to main TV and Digibox via scart to main TV.

All working well, signal quality late 70s, early 80s and strength 100%.

However, when I connected up my final set up, as below, initially the signal was very poor, even on the Analogue Sky box output. This I found to be down exclusively to a couple of poorly made connections. I cut these cables and re-connected the F-connectors / Co-ax cables, this time with a little more care, and now everything is perfect. Would it be possible some of the problems you are having is similar?

For information - my working Set-up:

Distribution Amp
UHF IN - Saorview and RF Out from Digibox (via Diplexer 2), combined using passive coax Y combiner
OUT - 4 Feeds to Main TV, Bedroom TV, Kids Room, Kitchen

Diplexer / Combiner Set 1
Takes Sat Feed 1 via Red Port, and Feed to main TV from Dist Amp down to Living room; output to Main TV (aerial in) and Sat 1 on digibox respectively.

Diplexer / Combiner Set 2
Takes Sat Feed 2 via Red Port, and Uplink Feed from Digibox in Living room back up to Distribution Amp

Scart
Feed to main TV from Digibox

Magic Eye
Bedroom has a magic eye which is working to control digibox from bedroom. Looking at adding one of these to the Kitchen also.

The Cush

rebellad wrote: »

However on the other TV I have a small problem, I tuned in the channels and they are all found however when I go to Rte1, Network2 they show up for a couple of seconds and then the screen goes black. TV3, TG4 and 3e all work fine. It is a Sharp TV about 4 years old - I understand that if the tv didn't have the correct tuner that all the channels would wouldn't show and I would only have sound. Has anyone come across this before??

If it displays TV3,TG4, 3e can't see why it won't display RTÉ1/2 as they are all carried on the same multiplex/frequency. Does it display RTÉ News Now/RTÉjr/RTÉ1+1 and digital Aertel?

Didn't think Sharp had an MPEG-4 on the market at that time.

What country/region did you use to setup the TV? If you used Ireland maybe try another MPEG-4 country/region - France or Norway.

rebellad

The Cush wrote: »

If it displays TV3,TG4, 3e can't see why it won't display RTÉ1/2 as they are all carried on the same multiplex/frequency. Does it display RTÉ News Now/RTÉjr/RTÉ1+1 and digital Aertel?

Didn't think Sharp had an MPEG-4 on the market at that time.

What country/region did you use to setup the TV? If you used Ireland maybe try another MPEG-4 country/region - France or Norway.

Yeah it's strange alright - the funny thing is RTE2 even pops up with the HD channel first the goes down to 560p and then blank.

In the datasheet it has the following so it looks like it has MPEG4 alright:
Reception system
• SDTV / HDTV (MPEG4, H.264)

Same issue with RTÉ News Now/RTÉjr/RTÉ1+1 - I think I set it up with Ireland, so might give France or Norway ago tonight.

rebellad

Genghis wrote: »

Did a similar project in my house over the last few days. Last night got everything to work perfectly (at last). Now have Saorview and an RF out channel from the Digibox in Kitchen, kids room and bedroom, along with Saorview to main TV and Digibox via scart to main TV.

All working well, signal quality late 70s, early 80s and strength 100%.

However, when I connected up my final set up, as below, initially the signal was very poor, even on the Analogue Sky box output. This I found to be down exclusively to a couple of poorly made connections. I cut these cables and re-connected the F-connectors / Co-ax cables, this time with a little more care, and now everything is perfect. Would it be possible some of the problems you are having is similar?

For information - my working Set-up:

Distribution Amp
UHF IN - Saorview and RF Out from Digibox (via Diplexer 2), combined using passive coax Y combiner
OUT - 4 Feeds to Main TV, Bedroom TV, Kids Room, Kitchen

Diplexer / Combiner Set 1
Takes Sat Feed 1 via Red Port, and Feed to main TV from Dist Amp down to Living room; output to Main TV (aerial in) and Sat 1 on digibox respectively.

Diplexer / Combiner Set 2
Takes Sat Feed 2 via Red Port, and Uplink Feed from Digibox in Living room back up to Distribution Amp

Scart
Feed to main TV from Digibox

Magic Eye
Bedroom has a magic eye which is working to control digibox from bedroom. Looking at adding one of these to the Kitchen also.

Will have a look at the connections tonight and see if that makes any difference. Thanks for the advice