Mux 2 Launched / Saorview Rescan Required

derryviewer

Peter Rhea wrote: »

Which are the 'numerous channels in between' RTE2 & RTE1?

Basically as in the listings in this post here

http://www.boards.ie/vbulletin/showpost.php?p=88087796&postcount=127

Peter Rhea

Can you set your channel list to show TV only?

kooga

on one of the tvs last night bit of signal break up on rte 1 and rte jnr which were on mux 2 channel 49 spur hill. did a rescan and they are now mux 2 channel 40 collins barracks.

Peter Rhea

kooga wrote: »

on one of the tvs last night bit of signal break up on rte 1 and rte jnr which were on mux 2 channel 49 spur hill. did a rescan and they are now mux 2 channel 40 collins barracks.

Your aerial is set up for Spur Hill? There is no point rescanning, if your aerial is set up to receive the best signal available in your area.

If your TV is storing the services with the best signal, then clearly there is a problem there, although it could be caused by overload as much as a weak signal.

If the TV is just storing the services it finds 1st (lower frequency) & Spur Hill is better, just delete those on ch.40 & do a manual rescan on ch.49.

White Heart Loon

I've had issues with TV's storing the first set of channels they find. My mother's house has an aerial pointing at Truskmore, but picks a weaker signal from Castlebar. A full scan on her TV stores the Castlebar muxes as they are on channel 22 and 25. The answer is to manually do your scans on the channel.

The Cush

White Heart Loon wrote: »

I've had issues with TV's storing the first set of channels they find. My mother's house has an aerial pointing at Truskmore, but picks a weaker signal from Castlebar. A full scan on her TV stores the Castlebar muxes as they are on channel 22 and 25.

If duplicate muxes from 2 or more transmitters are found during a scan only the mux from the transmitter with the best reception quality is stored according to the Saorview spec.

kooga

Peter Rhea wrote: »

Your aerial is set up for Spur Hill? There is no point rescanning, if your aerial is set up to receive the best signal available in your area.

If your TV is storing the services with the best signal, then clearly there is a problem there, although it could be caused by overload as much as a weak signal.

If the TV is just storing the services it finds 1st (lower frequency) & Spur Hill is better, just delete those on ch.40 & do a manual rescan on ch.49.

tKs Peter, yep aerial set up is Spur Hill. Have left channel 40 on rather than delete and replace with channel 49, will see how it goes.

Jimmyboss

I've got 3 tv's with Saorview tuners, the oldest of which currently receives all channels available - the other 2 much newer tv's can only pick up RTE 1, RTE 1+1 and RTE Jr, and even then only sporadically according to the weather.
All 3 tv's are working off the one rooftop aerial, can anybody please help me out, I'm not too much up on muxes and the more technical side of things.

Digifriendly

Jimmyboss wrote: »

I've got 3 tv's with Saorview tuners, the oldest of which currently receives all channels available - the other 2 much newer tv's can only pick up RTE 1, RTE 1+1 and RTE Jr, and even then only sporadically according to the weather.
All 3 tv's are working off the one rooftop aerial, can anybody please help me out, I'm not too much up on muxes and the more technical side of things.

Those 3 channels are on a different mux from other Saorview channels so maybe the tuners on the newer TVs are not picking up the other mux.

Jimmyboss

Digifriendly wrote: »

Those 3 channels are on a different mux from other Saorview channels so maybe the tuners on the newer TVs are not picking up the other mux.

Is there any way I can pick up the second mux on the newer tv's (ie software update) ?

Fuzzy Clam

Jimmyboss wrote: »

Is there any way I can pick up the second mux on the newer tv's (ie software update) ?

I would check that the older TV can receive both muxes on all the TV points.
The fact that reception varies with the weather would indicate a weak signal.

The Cush

Jimmyboss wrote: »

All 3 tv's are working off the one rooftop aerial, can anybody please help me out, I'm not too much up on muxes and the more technical side of things.

How is the aerial split to all 3 TVs?
What signal strength/quality readings do the 3 TVs give on their respective signal meters?

greasepalm

are people using powered aerials for saorview as my rte1 was breaking up and i have an aerial in the attic non powered,added a one for all aerial beside tv and perfect now when plugged in.
above you mention signal meter is that on the scan you do that shows a 10?

The Cush

greasepalm wrote: »

are people using powered aerials for saorview as my rte1 was breaking up and i have an aerial in the attic non powered,added a one for all aerial beside tv and perfect now when plugged in.
above you mention signal meter is that on the scan you do that shows a 10?

Basically it depends on the signal quality where the aerial is located, if the all-for-one works beside the TV, great.

Ideally Saorview recommend an externally mounted aerial as indoor and attic aerials are susceptible to local interference.

Powered or amplified aerials depends on a good quality signal being received in the first place but if signal strength is on the low side that may not be good enough by the time it gets to the receiver via the co-ax cable run, the amplifier gives the signal strength a boost to overcome this but it won't improve the signal quality or reduce interference. Over amplifying a good received signal can cause problems too.

Signal strength/quality meters readings can vary from one receiver to another in display (% or BER or scale) and accuracy but do give a basic indication of what the signal received is.

White Heart Loon

The Cush wrote: »

If duplicate muxes from 2 or more transmitters are found during a scan only the mux from the transmitter with the best reception quality is stored according to the Saorview spec.

At the time this was on the Triax 112, but it also happens with their Samsung TV in the other room. The Triax has been replaced since so I can no longer test. The Samsung TV isn't Saorview approved but works with Mheg 5

Johnsee

Ok guys Im lost...I have 2 boxes both combo boxes...the Triax 114 box is fine it gets all the terrestial channels no bother...since the weekend I have lost rte 2, tv3, tg4, 3e on my ferguson 250 combo box ...I did a automatic rescan and it can only find rte 1 and rte junior...I saw previous postings about Mux 1 and Mux 2 but cant follow it, what do I need to do to retune the rest of the terrestial channels on the ferguson box...?Thanks-John

Peter Rhea

Johnsee wrote: »

...since the weekend I have lost rte 2, tv3, tg4, 3e on my ferguson 250 combo box ...I did a automatic rescan and it can only find rte 1 and rte junior...I saw previous postings about Mux 1 and Mux 2 but cant follow it, what do I need to do to retune the rest of the terrestial channels on the ferguson box...?

The problem is that there isn't a good enough signal getting to the box.

If you have an outdoor aerial, it's possible it could have become misaligned, or damaged, water getting in where it's not supposed to etc.

The Cush

Johnsee wrote: »

...I saw previous postings about Mux 1 and Mux 2 but cant follow it, what do I need to do to retune the rest of the terrestial channels on the ferguson box...?Thanks-John

The Saorview channels are split between 2 frequencies (multiplexes). The channels you're missing are on the first frequency (Multiplex 1 or Mux1).

As Peter says above you have a signal reception problem, could be aerial or cabling etc.

Can you describe what your aerial setup is, indoor/outdoor, amplifier, splitters etc.?

Johnsee

I have a dish and an external aerial serving two boxes, one box Triax no problems terrestial and satellite channels all fine, ferguson box Satellite channels are fine, but am now only receiving two terrestial channels....

Peter Rhea

Johnsee wrote: »

I have a dish and an external aerial serving two boxes, one box Triax no problems terrestial and satellite channels all fine, ferguson box Satellite channels are fine, but am now only receiving two terrestial channels....

It could be a problem of poor signal from the aerial itself, & the Ferguson box is 'feeling the effects' more than the Triax, maybe just due to a small extra signal loss in cables or connections.

Or it could be a definite, more serious fault with the feed to the Ferguson box, e.g. water damage. Is the aerial a recent installation? DIY or professional?

Souness

Hoping someone on here might be able to help me. Folks have two saorview TVs. One with a Triax combi box and the other a Sumsung TV with inbuilt tuner. Rescanned the Triax without any problem, RTE1HD, junior and +1 all coming in in right position.
However, when I rescan the Samsung it does not pick up any of the MUX 2 channels, it just shows RTE1, junior and +1 after the MUX 1 channels with the rescan message still present.

From extensive googling I am none the wiser.

I have tried the following

Manual scan on channel 55, Maghera transmitter as it is only 20km away Factory reset the TV Tried to tune it in from the aerial point the other TV is at

So I am pretty sure it is down to the TV. One thing I did find on a UK forum was the possibility that the MUX2 signal was too strong and it was overloading the tuner. Has anyone experienced this or would anyone know why this TV gets MUX1 and not 2?

Any help would be great, going a bit mad here.
Thanks

The Cush

Souness wrote: »

So I am pretty sure it is down to the TV. One thing I did find on a UK forum was the possibility that the MUX2 signal was too strong and it was overloading the tuner. Has anyone experienced this or would anyone know why this TV gets MUX1 and not 2?

Any help would be great, going a bit mad here.

Yes I experienced this with a Sony TV and a Walker Soarview PVR at the same TV point, the signal was too strong for the Walker box, down to how well the 2 different tuners handle the signal.

I assume that close to the transmitter you don't have a masthead amp?
Are you using an external or indoor aerial?
How is the aerial signal split to the different TV points?

Souness

Thanks cush for getting back so quickly.

In answer to your questions,

Correct there is no amp
Aerial is external
The main connection is the one with the Triax box, splitter used to bring signal down to other TV. But as I tried to tune it at the main point as well I dont think its the cable that's at fault.

The Cush

What signal strength/quality levels does the TV's meter display at the 2 TV points?

Souness

On checking there is a large discrepancy

Main point - 78

Other - 18

But having said that there have been occasions where the weak or no signal message caem up but in the norm reception has been v good.

The Cush

Souness wrote: »

On checking there is a large discrepancy

Main point - 78

Other - 18

But having said that there have been occasions where the weak or no signal message caem up but in the norm reception has been v good.

What does the 78 and 18 represent, signal quality or strength?

Souness

Sorry, those are the signal strength.
Not sure if this is the quality figure but it shows a bit rate error of 0.

The Cush

Souness wrote: »

those are the signal strength.
Not sure if this is the quality figure but it shows a bit rate error of 0.

I assume % readings, 18 would be way too low and 78 could be borderline for a constant stable signal. Unfortunately we don't know what the % figures actually represents in dBμV. The Triax tuner may be able to deal with a weaker signal better than the Samsung TV. A stable bit error rate (BER) of 0 indicates a good quality signal but if the signal strength is low it can fall over quickly.

What is the reading for the RTÉ2 Mux?

Problem could be with the aerial, aerial alignment, cabling etc.

Souness

Is RTE2 Mux1? It is Mux 1 figures that I gave as I cannot get any Mux2 signal on the samsung.
Dont really know enough about the whole setup to give you any decent info. Was installed by a guy from newmarket, folks said a v professional lad who came recommended by neighbours so imagine he set the aerial up correctly. Thinking maybe need to ask him to call out....

The Cush

Souness wrote: »

Was installed by a guy from newmarket, folks said a v professional lad who came recommended by neighbours so imagine he set the aerial up correctly. Thinking maybe need to ask him to call out....

Could the aerial have moved in the recent stormy weather? I'd get him back to recheck the aerial installation.