DS Forums

 
 

Strong signal on Channel 53 from Reigate, quality nil


Reply
Thread Tools Search this Thread
Old 04-05-2012, 14:31
casablancauk
Forum Member
 
Join Date: Jul 2008
Posts: 91

I have a Panasonic DMR-BWT700 DVD Bluetooth player recorder with a DVBT-T2 tuner.I am on the Reigate transmitter and get 100% strength and quality signal on all channels except 53 which Digital UK say I should be getting HD. This has 100% signal strength but nil quality. Digital UK state that I should have an aerial group of C/D V, W V. As far as I can see I have an High Gain aerial with the reflectors mounted side to side and the X type elements long and thin so I assume it is vertically mounted, but I don't know if this is one of the recommended groups.
I would appreciate some input if anyone can advise.
Thanks
casablancauk is offline   Reply With Quote
Please sign in or register to remove this advertisement.
Old 04-05-2012, 14:38
tomee
Forum Member
 
Join Date: Nov 2011
Posts: 2,185
first time installation scan.
tomee is offline   Reply With Quote
Old 04-05-2012, 14:42
kjhskj75
Forum Member
 
Join Date: Jan 2005
Posts: 749
Normally high strength and zero quality means a strong signal which the device cannot decode, either analogue or an HD signal on a non-HD box.

Are you sure the device can do HD ?

Does it have a "Freeview HD" logo ?

Note that "Freeview" and "HD Ready" does not count.
kjhskj75 is offline   Reply With Quote
Old 04-05-2012, 14:51
Mark C
Forum Member
 
Join Date: Dec 2001
Location: Hampshire
Posts: 8,079
Normally high strength and zero quality means a strong signal which the device cannot decode, either analogue or an HD signal on a non-HD box.

Are you sure the device can do HD ?

Does it have a "Freeview HD" logo ?

Note that "Freeview" and "HD Ready" does not count.
Two clicks on Google takes you here:-

http://www.panasonic.co.uk/html/en_G...trackInfo=true

The specs tab indicates a T2 tuner
Mark C is offline   Reply With Quote
Old 04-05-2012, 16:11
kasg
Forum Member
 
Join Date: Oct 2002
Location: West Sussex (Crystal Palace)
Posts: 3,377
And the first line says "Twin Freeview+ HD Tuners" so it jolly well ought to work.
kasg is offline   Reply With Quote
Old 04-05-2012, 16:16
kruador
Forum Member
 
Join Date: Feb 2011
Location: Reading
Posts: 449
100% strength almost certainly means it's overloading the tuner front end. It's possible that it's less able to handle this in DVB-T2 mode - 27,000 or so carriers crammed into 8 MHz bandwidth rather than 6,817 for DVB-T.

Turn down or remove any boosters, bypass the masthead amp if any, and (if required) add attenuators.
kruador is offline   Reply With Quote
Old 04-05-2012, 16:42
casablancauk
Forum Member
 
Join Date: Jul 2008
Posts: 91
100% strength almost certainly means it's overloading the tuner front end. It's possible that it's less able to handle this in DVB-T2 mode - 27,000 or so carriers crammed into 8 MHz bandwidth rather than 6,817 for DVB-T.

Turn down or remove any boosters, bypass the masthead amp if any, and (if required) add attenuators.
I don't have any boosters or amplifiers and of course it does have DVB T2 twin tuners.
casablancauk is offline   Reply With Quote
Old 04-05-2012, 16:44
casablancauk
Forum Member
 
Join Date: Jul 2008
Posts: 91
Normally high strength and zero quality means a strong signal which the device cannot decode, either analogue or an HD signal on a non-HD box.

Are you sure the device can do HD ?

Does it have a "Freeview HD" logo ?

Note that "Freeview" and "HD Ready" does not count.
The DMR-BWT700 has twin DVB-T2 HD tuners
casablancauk is offline   Reply With Quote
Old 04-05-2012, 17:20
albertd
Forum Member
 
Join Date: Apr 2005
Location: Crawley, West Sussex
Posts: 9,299
Is this perhaps a box which needs the HD Mux to be tuned separately from the SD Mux?
albertd is offline   Reply With Quote
Old 04-05-2012, 18:50
casablancauk
Forum Member
 
Join Date: Jul 2008
Posts: 91
Is this perhaps a box which needs the HD Mux to be tuned separately from the SD Mux?
I haven't heard of that before.But I have gone through the settings menu and not seen any way that can be done
casablancauk is offline   Reply With Quote
Old 04-05-2012, 19:43
kasg
Forum Member
 
Join Date: Oct 2002
Location: West Sussex (Crystal Palace)
Posts: 3,377
I haven't heard of that before.But I have gone through the settings menu and not seen any way that can be done
I had a quick search through the manual online as well and couldn't find anything.
kasg is offline   Reply With Quote
Old 05-05-2012, 05:14
kjhskj75
Forum Member
 
Join Date: Jan 2005
Posts: 749
When you do a manual tune, is there an option for DVB-T/DVB-T2 ?
kjhskj75 is offline   Reply With Quote
Old 05-05-2012, 09:47
casablancauk
Forum Member
 
Join Date: Jul 2008
Posts: 91
When you do a manual tune, is there an option for DVB-T/DVB-T2 ?
No, unfortunately not.
I'm wondering if the tuner is at fault, everything else seems to have been covered. The unit is only three months old and this was the first opportunity to get HD after the switch over. I had been looking forward to it and you can imagine my dissapointment when it wouldn't work.
casablancauk is offline   Reply With Quote
Old 05-05-2012, 10:50
technologist
Forum Member
 
Join Date: Feb 2004
Location: London
Posts: 7,514
Have you actually done a manual tune -
I would have depowered the unit and then re-powered to see if that had sorted it out and then force it to look at the HD mux.... It then might see it -
but it not a trip back to the shop - all very disappointing ...
technologist is offline   Reply With Quote
Old 05-05-2012, 12:25
Colin_London
Forum Member
 
Join Date: Jul 2003
Location: Essex
Posts: 3,858
Does it have an LNA option (Low Noise Amplifier) built in?

If so, turn it Off.
Colin_London is offline   Reply With Quote
Old 06-05-2012, 11:10
casablancauk
Forum Member
 
Join Date: Jul 2008
Posts: 91
Does it have an LNA option (Low Noise Amplifier) built in?

If so, turn it Off.
No option for that I'm afraid.
I have emailed Panasonic support with the problem but have not heard anything back.
I would take it back to the shop, Richer Sounds, but a previous unit had problems and they were not too interested even though it was in warranty.
casablancauk is offline   Reply With Quote
Old 06-05-2012, 12:24
Luis Essex
Forum Member
 
Join Date: Oct 2007
Posts: 1,738
but have you actually done a manual tune - regardless of what the quality meter says?
Luis Essex is offline   Reply With Quote
Old 06-05-2012, 13:47
casablancauk
Forum Member
 
Join Date: Jul 2008
Posts: 91
but have you actually done a manual tune - regardless of what the quality meter says?
Yes, I have done a manual tune on channel 53.
256QAM 2/3 32k DVB-T2
2 kiloWatts

Although the program list shows the HD stations when you go to them there is a no signal message.
casablancauk is offline   Reply With Quote
Old 06-05-2012, 16:01
kasg
Forum Member
 
Join Date: Oct 2002
Location: West Sussex (Crystal Palace)
Posts: 3,377
I would take it back to the shop, Richer Sounds, but a previous unit had problems and they were not too interested even though it was in warranty.
A warranty is irrelevant as far as Richer Sounds is concerned - they sold it to you, they have to be "interested" - it's the law!
kasg is offline   Reply With Quote
Old 06-05-2012, 19:14
brumlad36
Forum Member
 
Join Date: Mar 2008
Location: Lincoln (Belmont/Waltham TXs)
Posts: 2,344
Yes, I have done a manual tune on channel 53.
256QAM 2/3 32k DVB-T2
2 kiloWatts

Although the program list shows the HD stations when you go to them there is a no signal message.
This may seem like a silly question, but have you taken the box to another "known-good-reception" location, to see if the HD channels work on their aerial? Or, is there any chance you can borrow someone else's HD box, to see if it works on your aerial system?

Chris.
brumlad36 is offline Follow this poster on Twitter   Reply With Quote
Old 06-05-2012, 20:25
AndrewLG
Forum Member
 
Join Date: Nov 2011
Location: Roehampton, London
Posts: 293
This may seem like a silly question, but have you taken the box to another "known-good-reception" location, to see if the HD channels work on their aerial? Or, is there any chance you can borrow someone else's HD box, to see if it works on your aerial system?

Chris.
That's a good suggestion but I have what may be a silly question:

Is the message definitely from the box and not the TV?

Seen before on a forum when the message was thought to be from a box but was actually from the TV.

Just a thought.
AndrewLG is offline   Reply With Quote
Old 07-05-2012, 10:02
casablancauk
Forum Member
 
Join Date: Jul 2008
Posts: 91
That's a good suggestion but I have what may be a silly question:

Is the message definitely from the box and not the TV?

Seen before on a forum when the message was thought to be from a box but was actually from the TV.

Just a thought.
That is a really good idea, but I don't know anyone with a unit that I could borrow to try it out or anyone I could take mine to.
The message is definately from the Panasonic. For a little while yesterday I had a colourful mosaic pattern on one of the HD channels but that has now reverted to the no signal message. I have done a further manual tune on channel 53. It still shows maximun signal strength but zero quality. I'm going out to buy an attenuator tomorrow and give that a try and also hope that I eventually get a response from Panasonic.
casablancauk is offline   Reply With Quote
Old 07-05-2012, 14:49
Luis Essex
Forum Member
 
Join Date: Oct 2007
Posts: 1,738
I have a Panasonic DMR-BWT700 DVD Bluetooth player recorder with a DVBT-T2 tuner.I am on the Reigate transmitter and get 100% strength and quality signal on all channels except 53 which Digital UK say I should be getting HD. This has 100% signal strength but nil quality.
On channel 53 what is the colour of the strength bar?

The manual sugests that it can turn red when the signal is too strong.
To quote: "When the signal is too strong (red bar), reduce the signal amplification at your aerial".
Luis Essex is offline   Reply With Quote
Old 07-05-2012, 19:51
casablancauk
Forum Member
 
Join Date: Jul 2008
Posts: 91
On channel 53 what is the colour of the strength bar?

The manual sugests that it can turn red when the signal is too strong.
To quote: "When the signal is too strong (red bar), reduce the signal amplification at your aerial".
Yes, the strength bar is white and 100%. The quality bar sometimes flashes a brief glimpse of red but mostly empty
casablancauk is offline   Reply With Quote
Old 08-05-2012, 13:52
casablancauk
Forum Member
 
Join Date: Jul 2008
Posts: 91

Yes, the strength bar is white and 100%. The quality bar sometimes flashes a brief glimpse of red but mostly empty
Panasonic are collecting the unit tomorrow after first being sent to their normal repairer in Horley who said that they can't repair it. Has to go to a designated location. I think that the unit is trouble and they did not want to touch it.
What I have thought and somebody can put me right. I route the RF out of the unit through my SKY+ box (which is not an HD box) then to the TV. I'm sure it can't make a difference as the signal is just routed through but you never know!
casablancauk is offline   Reply With Quote
 
Reply




 
Forum Jump


All times are GMT. The time now is 05:33.