EPG & BBC
 

I have 2 TVs completely different manufacturers. The EPG on both
frequently have no information on the 4 BBC channels. Is this normal?
What's going on?

Frank

EPG & BBC
 

On 11/11/2014 16:46, WhinYett wrote:
I have 2 TVs completely different manufacturers. The EPG on both
frequently have no information on the 4 BBC channels. Is this normal?
What's going on?

Frank



it's not normal from experience.

--
Gareth.
That fly.... Is your magic wand.

EPG & BBC
 

"WhinYett" wrote in message
...
I have 2 TVs completely different manufacturers. The EPG on
both frequently have no information on the 4 BBC channels.
Is this normal? What's going on?


Ah, I have that as well except on all channels. Recently
found out why: a length of the aerial cable is still in the
old brown cable with a very loose-weave braid. The main CAT5
from my cable modem to my router is a few inches away from
it for about 8ft. I used an extension aerial cable with
modern foil screening to an outlet in another room and
bingo, all was well. All I have to do now is persuade SWMBO
to let me take the floor up to replace the brown cable!

The other possibility that can cause it is too much or too
little signal. All BBC channels are transmitted on a single
mux so the fact that you have no EPG on BBC suggests that
your problem lies with the signal on one frequency.

The TV should be able to show you signal strength somewhere
in its menus. If you are showing a 100% signal on a BBC
channel try fitting an attenuator in the signal feed. You
can either get a fixed 10dB attenuator from Maplin, or a
20dB variable from Screwfix or Toolstation. If you are
showing less than 100% signal then you might need a booster.

It would help all of us on here if you can say roughly where
you are and which transmitter you are using.



--
Woody

harrogate three at ntlworld dot com

EPG & BBC
 

On 11/11/2014 19:20, Woody wrote:

The TV should be able to show you signal strength somewhere
in its menus. If you are showing a 100% signal on a BBC
channel try fitting an attenuator in the signal feed. You
can either get a fixed 10dB attenuator from Maplin, or a
20dB variable from Screwfix or Toolstation. If you are
showing less than 100% signal then you might need a booster.

If too much signal is corrupting the received data, how would could only
affect the EPG data, and not the main audio and video streams ?



--
Mark
Please replace invalid and invalid with gmx and net to reply.

EPG & BBC
 

"Mark Carver" wrote in message
...
On 11/11/2014 19:20, Woody wrote:

The TV should be able to show you signal strength
somewhere
in its menus. If you are showing a 100% signal on a BBC
channel try fitting an attenuator in the signal feed. You
can either get a fixed 10dB attenuator from Maplin, or a
20dB variable from Screwfix or Toolstation. If you are
showing less than 100% signal then you might need a
booster.

If too much signal is corrupting the received data, how
would could only affect the EPG data, and not the main
audio and video streams ?




Fair comment. I wonder, does the signal carry more error
correction on the main data than on the EPG - I'll have to
ask someone.


--
Woody

harrogate three at ntlworld dot com

EPG & BBC
 

On 11/11/2014 21:12, Woody wrote:
"Mark Carver" wrote in message

If too much signal is corrupting the received data, how
would could only affect the EPG data, and not the main
audio and video streams ?

Fair comment. I wonder, does the signal carry more error
correction on the main data than on the EPG - I'll have to
ask someone.

IIRC The FEC is applied globally at transport stream level, not
separately on individual streams ?


--
Mark
Please replace invalid and invalid with gmx and net to reply.

EPG & BBC
 

On my Goodmans one seems to find all sorts of channels say no information
available or last available program, but when you go to the so called
miniguide it suddenly seems to find some information and then when you go
back its all there. No actual rule one can put in place to tell which
channels will be like this, and sometimes no amount of fiddling will get
the holes filled in. its then an unplug and plug in again time till the next
time itdoes something daft, like refuses to turn off from the remote or
keeps on glitching or turns off the voice or makes it sound like its coming
in jolts.
I do suspect that in this world, nobody really tests things before they
shove them out to the public and if you are lucky, it will get fixed by an
update, but otherwise tough.
This removal aof sorted lists from I player seems to have caused all sorts
of mayhem, yet the Beeb seem to just not give a monkeys about it.
Brian

--
From the Sofa of Brian Gaff Reply address is active
"the dog from that film you saw" wrote in
message ...
On 11/11/2014 16:46, WhinYett wrote:
I have 2 TVs completely different manufacturers. The EPG on both
frequently have no information on the 4 BBC channels. Is this normal?
What's going on?

Frank



it's not normal from experience.

--
Gareth.
That fly.... Is your magic wand.

EPG & BBC
 

In article , Mark Carver
wrote:
On 11/11/2014 21:12, Woody wrote:
"Mark Carver" wrote in message

If too much signal is corrupting the received data, how would could
only affect the EPG data, and not the main audio and video streams ?

Fair comment. I wonder, does the signal carry more error correction on
the main data than on the EPG - I'll have to ask someone.

IIRC The FEC is applied globally at transport stream level, not
separately on individual streams ?

The 'guide' subcarriers are different because they are present to aid
tuning prior to being able to read the full transport stream. But I don't
know if they contain any info that you'd then need to specifically be able
to read the EPG. Seems unlikely, but I don't know enough about the details.

Seems more plausible that the EPG details have a format this isn't being
recognised correctly. Either because of an error or not being as the
rx maker anticipated.

Jim

--
Please use the address on the audiomisc page if you wish to email me.
Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm
Armstrong Audio http://www.audiomisc.co.uk/Armstrong/armstrong.html
Audio Misc http://www.audiomisc.co.uk/index.html

EPG & BBC
 

On 12/11/2014 11:51, Martin wrote:
On Wed, 12 Nov 2014 10:04:21 +0000 (GMT), Jim Lesurf


The EPG is transmitted to the ground separately via a different satellite to
the main audio video streams.

For satellite, yes, but also no. For Sky and Freesat platforms it is on
a dedicated transponder (different transponders for the two platforms
too), but the same data is also available as a slower trickle (therefore
will take longer to load the entire EPG) on all
other transponders.

However, we were talking about DTT in this thread, which is different
again.

--
Mark
Please replace invalid and invalid with gmx and net to reply.

EPG & BBC
 

On 12/11/2014 13:04, Martin wrote:

Without a separate LNB for the EPG, I get no Freesat EPG on my Humax Freesat
PVR.

Well, you can't expect it to work properly outside the UK I suppose. ;-)

There's this too:-

http://forums.digitalspy.co.uk/showthread.php?t=1941710


--
Mark
Please replace invalid and invalid with gmx and net to reply.

EPG & BBC
 

On 11/11/2014 19:20, Woody wrote:
"WhinYett" wrote in message
...
I have 2 TVs completely different manufacturers. The EPG on
both frequently have no information on the 4 BBC channels.
Is this normal? What's going on?


Ah, I have that as well except on all channels. Recently
found out why: a length of the aerial cable is still in the
old brown cable with a very loose-weave braid. The main CAT5
from my cable modem to my router is a few inches away from
it for about 8ft. I used an extension aerial cable with
modern foil screening to an outlet in another room and
bingo, all was well. All I have to do now is persuade SWMBO
to let me take the floor up to replace the brown cable!

The other possibility that can cause it is too much or too
little signal. All BBC channels are transmitted on a single
mux so the fact that you have no EPG on BBC suggests that
your problem lies with the signal on one frequency.

The TV should be able to show you signal strength somewhere
in its menus. If you are showing a 100% signal on a BBC
channel try fitting an attenuator in the signal feed. You
can either get a fixed 10dB attenuator from Maplin, or a
20dB variable from Screwfix or Toolstation. If you are
showing less than 100% signal then you might need a booster.

It would help all of us on here if you can say roughly where
you are and which transmitter you are using.



Sorry - I didn't make anything clear. I am talking
about Freeview TVs (DTT?). I am in East Lothian so my signals come from
Blackhill or Point of Kelly. When I set up freeview years ago Blackhill
was marginally the stronger.
Frank

EPG & BBC
 

"WhinYett" wrote in message ...

I have 2 TVs completely different manufacturers. The EPG on
both frequently have no information on the 4 BBC channels.
Is this normal? What's going on?

Lots clipped

Sorry - I didn't make anything clear. I am talking about
Freeview TVs (DTT?). I am in East Lothian so my signals come from
Blackhill or Point of Kelly. When I set up freeview years ago Blackhill
was marginally the stronger.
Frank

This is probably a long shot but might be worth checking.

I think your problem can happen if you are receiving the muxes from two
different regions. In your case I guess this might be STV Central and STV
North.

All the Muxes at a transmitter in a single region (or network) carry all the
EPG information for not just that mux but the other muxers as well. So in
theory while you are watching, say ITV, you are still getting the EPG
information for BBC1.

However if you have set your system up, say, so that you have chosen to get
the BBC Mux from a different transmitter to the other muxes, and that BBC
Mux transmitter is in a different region/network to the transmitter for the
other muxes, then, because it is in a different network it will only get the
EPG data for the BBC services when you are tuned to one of those services
and the stored EPG data will probably get discarded when you change to a
service on one of other muxes.

This issue probably only affects, mainly older, receivers that do not check
for reception of multiple regions and give you a choice of preferred region.
From my experience of living on the boundary of two regions older boxes in
these circumstances invariably need careful manual tuning.

So again, as a long shot, it might be worth checking the frequencies for
each of your muxes to make sure they are all coming from the same
transmitter.

As an aside on the discussion about signal strength affecting EPG reception
from my experience the EPG is more robust that the program streams simply
because it is constantly being repeated and errors caused by intermittent
reception will get corrected. I live on the Surrey/Hampshire border and in
the days when Hannigton was not radiating toward Guildford I had hopeless
reception of the services from Hannington but could still get a fully
populated EPG from there.


I hope this is useful,

Glyn