No signal problem

Brian2011

Hi,

On RTE One only, picture sometime gets all jumbled, comes back for a while, gets jumbled again sound cuts out and then 'No Signal' occasionally.

Seems to happen on RTE One only. I use an indoor booster thing.

I have tried retuning already several times. Any ideas, thanks.

Thurston?

What kind of aerial are you using, is the 'booster thing' part of an indoor aerial?

Also make/model receiver could be useful, or do you know if it's Saorview approved?

winston_1

As you have discovered indoor "booster things" don't work. A booster cannot boost what is not there. They are designed to overcome the loss on a long run of cable and must be fitted near the aerial (that obviously should be on the roof) not next to the TV.

Brian2011

winston_1 wrote: »

As you have discovered indoor "booster things" don't work. A booster cannot boost what is not there. They are designed to overcome the loss on a long run of cable and must be fitted near the aerial (that obviously should be on the roof) not next to the TV.

Sorry aerial is on the roof and yes it is relatively close to the aerial.

Brian2011

Thurston? wrote: »

What kind of aerial are you using, is the 'booster thing' part of an indoor aerial?

Also make/model receiver could be useful, or do you know if it's Saorview approved?

Something like this:

http://www.freetv.ie/black-wide-band-uhf-aerial.html

Thurston?

So ... the 'indoor booster' is a power supply for a masthead amplifier?

Have you done the obvious things like looking at connections, no sign of water coming from cables, that kind of thing?

How long ago was the aerial installed, do you know which transmitter it's pointing at?

Brian2011

Thurston? wrote: »

So ... the 'indoor booster' is a power supply for a masthead amplifier?

Have you done the obvious things like looking at connections, no sign of water coming from cables, that kind of thing?

How long ago was the aerial installed, do you know which transmitter it's pointing at?

A year or two ago. Yes connections are all secure and no damage. No I don't know about transmitter.

Thurston?

Well, if it was installed that recently, it should at least be aligned on a transmitter that actually carries Saorview, & not 1 of those that went off at switchover. The coverage checker shows all the transmitters, should give you an idea where your aerial is pointed.

Do you have more than 1 TV point, & are any others affected by the problem? What kind TV or box is affected?

Brian2011

Thurston? wrote: »

Well, if it was installed that recently, it should at least be aligned on a transmitter that actually carries Saorview, & not 1 of those that went off at switchover. The coverage checker shows all the transmitters, should give you an idea where your aerial is pointed.

Do you have more than 1 TV point, & are any others affected by the problem? What kind TV or box is affected?

3 TVs in house, yes others have same problem sometimes. All the TV's are saorview approved and built-in saorview. 2 LG and 1 Toshiba.

Thurston?

Saorview approved TVs, if they find signals from multiple transmitters, are supposed to keep those with the best signal, so it shouldn't be a case of them automatically rescanning & just storing the 1st set they find.

It's hard to pin down a problem at this remove: if it's not just general weak signal, it could be the opposite, too much or, something interfering with the specific frequency RTE1 (also RTE1 +1, RTE jr. & UTV Ireland) is carried on, say if the aerial is routed through a Sky box or DVD recorder.

I'm assuming the aerial was installed by an actual aerial installer?

Brian2011

Thurston? wrote: »

Saorview approved TVs, if they find signals from multiple transmitters, are supposed to keep those with the best signal, so it shouldn't be a case of them automatically rescanning & just storing the 1st set they find.

It's hard to pin down a problem at this remove: if it's not just general weak signal, it could be the opposite, too much or, something interfering with the specific frequency RTE1 (also RTE1 +1, RTE jr. & UTV Ireland) is carried on, say if the aerial is routed through a Sky box or DVD recorder.

I'm assuming the aerial was installed by an actual aerial installer?

Thanks for your help. I will get tv guy to sort it out at some stage, I do think myself that it is indeed probably an aerial problem.

The Cush

If the aerial was installed before the 2nd multiplex launched (it now carries RTÉ1) it may simply require it to be realigned for the 2 multiplexes to get the optimum signal from both. We've seen similar posts here where that was the fault after the 2nd mux was launched because the aerial had only be aligned for the 1st mux.

Brian2011

The Cush wrote: »

If the aerial was installed before the 2nd multiplex launched (it now carries RTÉ1) it may simply require it to be realigned for the 2 multiplexes to get the optimum signal from both. We've seen similar posts here where that was the fault after the 2nd mux was launched because the aerial had only be aligned for the 1st mux.

So I could try moving the aerial around in a different direction a bit to sort it?

Thurston?

If you have a good mux 1 signal*, I'd say it's unlikely mux 2 would be so bad, purely due to aerial positioning.

It could happen, I suppose, particularly if the aerial happened to be a poor quality type with erratic frequency response that might highten any propagation differences between muxes, but it's more likely to be poor overall signal across both muxes, with the 2nd being only a bit worse off. If they were analogue channels, you probably wouldn't notice much difference in quality.

Did the installer mention any apparent difficulties at the time? (Probably not, if he went with an aerial of the type you linked to.)

*Measured properly, not simply going by the TV picture.

Rippy

It could be a grouped aerial and the 2nd mux is out of group ?
For instance Crosshaven was on just 46 at first ( group B aerial ) then mux2 launched on 56 .( group c/d or W.)
Can OP see if there is a coloured tip on the aerial, ether green, red or yellow?