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What will happen at analogue switch-off?



 
 
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  #1  
Old May 13th 05, 10:02 AM
Bert
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Default What will happen at analogue switch-off?

Thinking about my own TVs at home and lack of STBs on all 5 of them (eek!),
got me to wondering what will happen at the big analogue switch-off...

Other than the obvious, what will hapen - specifically to the DVB broadcasts
in terms of power and capacity?
I heard that the signal power will be increased. I sthat true?
Also, will there eventually be new MUXes when the transmitters are not busy
transmitting analogue signals too, making space for more channels and the
ability to improve bitrates on the existing ones?

also...
It strikes me that there must be millions of portable (and hand-held) TVs
out there which rely on loop aerials and telescopic aerials used in
locations where a rooftop aerial is unavailable or impossible to provide.
Will hand-held TVs become a thing of the past? or will increased digital
signal power mean that digital versions become practical?

Bert


  #2  
Old May 13th 05, 11:01 AM
dylan
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"Bert" MyFirstNameATTyahooDOTTCOMM wrote in message
news:[email protected]
Thinking about my own TVs at home and lack of STBs on all 5 of them
(eek!),
got me to wondering what will happen at the big analogue switch-off...

Other than the obvious, what will hapen - specifically to the DVB
broadcasts
in terms of power and capacity?
I heard that the signal power will be increased. I sthat true?
Also, will there eventually be new MUXes when the transmitters are not
busy
transmitting analogue signals too, making space for more channels and the
ability to improve bitrates on the existing ones?

also...
It strikes me that there must be millions of portable (and hand-held) TVs
out there which rely on loop aerials and telescopic aerials used in
locations where a rooftop aerial is unavailable or impossible to provide.
Will hand-held TVs become a thing of the past? or will increased digital
signal power mean that digital versions become practical?

Bert


power and capacity?
-increased power
-similar capacity, depends on 16/64qam

handhelds/portables will work if you have adequate signal, probably will be
better than now but still not designed for hand-hand use, particularly
indoor. DVB-H could be around in the future for handheld.



  #3  
Old May 13th 05, 11:09 AM
John Russell
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Default


"Bert" MyFirstNameATTyahooDOTTCOMM wrote in message
news:[email protected]
Thinking about my own TVs at home and lack of STBs on all 5 of them
(eek!),
got me to wondering what will happen at the big analogue switch-off...

Other than the obvious, what will hapen - specifically to the DVB
broadcasts
in terms of power and capacity?
I heard that the signal power will be increased. I sthat true?
Also, will there eventually be new MUXes when the transmitters are not
busy
transmitting analogue signals too, making space for more channels and the
ability to improve bitrates on the existing ones?

also...
It strikes me that there must be millions of portable (and hand-held) TVs
out there which rely on loop aerials and telescopic aerials used in
locations where a rooftop aerial is unavailable or impossible to provide.
Will hand-held TVs become a thing of the past? or will increased digital
signal power mean that digital versions become practical?

Bert



There is an ever increasing fusion of technolgies. Mobile phones are now
capable of recieving streaming video and they don't have huge DVB type
aerials.


  #4  
Old May 13th 05, 11:12 AM
tedjrr
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Bert wrote:
........also...
It strikes me that there must be millions of portable (and hand-held) TVs
out there which rely on loop aerials and telescopic aerials used in
locations where a rooftop aerial is unavailable or impossible to provide.
Will hand-held TVs become a thing of the past? or will increased digital
signal power mean that digital versions become practical?


If anything handheld devices will become more prolific, and you'll have
DVB-H for txing to mobiles. At the point when analogue UHF Tv eiter
dies ar ceases to be significant, there are enhancements that happen to
DTT (DVB-T), such as resolved protection ratio issues leading to more
power, and more transmitters. Thus you get a much more stable DTT, an
the ability (say) for things like portable DVD players to have a DTT
reception facility.

As for all the old analogue devices, including handheld lcd TVs with
teloscolic aeriels? Most of these will be pretty past in by then, and
possibly just get chucked. DTT converter boxes will become smaller,
much cheaper and even battery powered, so you may even be able to glue
one on the back.

One issue that has been raised by a regular correspondent on
uk.tech.broadcast in the past regards legacy distribution. The
question ids this, whern all analogue TV tx has been dispensed with,
will there still be UHF channels that are protected for domestic use as
the output channels for STBs, VCRs DVDs and the like?
  #5  
Old May 13th 05, 11:17 AM
dylan
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One issue that has been raised by a regular correspondent on
uk.tech.broadcast in the past regards legacy distribution. The question
ids this, whern all analogue TV tx has been dispensed with, will there
still be UHF channels that are protected for domestic use as the output
channels for STBs, VCRs DVDs and the like?


If the goverment can't sell them ;o)


  #6  
Old May 13th 05, 12:21 PM
Tim Mitchell
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Default

In article , tedjrr writes
Bert wrote:
........also...
It strikes me that there must be millions of portable (and hand-held) TVs
out there which rely on loop aerials and telescopic aerials used in
locations where a rooftop aerial is unavailable or impossible to provide.
Will hand-held TVs become a thing of the past? or will increased digital
signal power mean that digital versions become practical?


If anything handheld devices will become more prolific, and you'll have
DVB-H for txing to mobiles. At the point when analogue UHF Tv eiter
dies ar ceases to be significant, there are enhancements that happen to
DTT (DVB-T), such as resolved protection ratio issues leading to more
power, and more transmitters. Thus you get a much more stable DTT, an
the ability (say) for things like portable DVD players to have a DTT
reception facility.

As for all the old analogue devices, including handheld lcd TVs with
teloscolic aeriels? Most of these will be pretty past in by then, and
possibly just get chucked. DTT converter boxes will become smaller,
much cheaper and even battery powered, so you may even be able to glue
one on the back.

One issue that has been raised by a regular correspondent on
uk.tech.broadcast in the past regards legacy distribution. The
question ids this, whern all analogue TV tx has been dispensed with,
will there still be UHF channels that are protected for domestic use as
the output channels for STBs, VCRs DVDs and the like?


Presumably the UHF tuners on TV sets will gradually disappear also as
they won't be needed any more for receiving broadcasts, so linking
devices by UHF will become a thing of the past anyway.

--
Tim Mitchell
  #7  
Old May 13th 05, 01:26 PM
dylan
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Default


Presumably the UHF tuners on TV sets will gradually disappear also as
they won't be needed any more for receiving broadcasts, so linking devices
by UHF will become a thing of the past anyway.

--
Tim Mitchell


If the analogue tuners do disappear then distribution systems around houses
ie for VCR, SAT, will need something more expensive than now
Maybe the system will get replaced with digital, ie digital tuner, the only
snag is you'll need a COFDM modulator and upconvertor, which in time will
get cheaper.


  #8  
Old May 13th 05, 01:41 PM
Max Demian
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Default

"Tim Mitchell" wrote in message
...

Presumably the UHF tuners on TV sets will gradually disappear also as they
won't be needed any more for receiving broadcasts, so linking devices by
UHF will become a thing of the past anyway.


What about 'analogue' teletext?

How am I going to read the subtitles on my opera laserdiscs if I need to buy
a new digital only TV?

--
Max Demian


  #9  
Old May 13th 05, 01:44 PM
DAB sounds worse than FM
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dylan wrote:
Presumably the UHF tuners on TV sets will gradually disappear also as
they won't be needed any more for receiving broadcasts, so linking
devices by UHF will become a thing of the past anyway.

--
Tim Mitchell


If the analogue tuners do disappear then distribution systems around
houses ie for VCR, SAT, will need something more expensive than now
Maybe the system will get replaced with digital, ie digital tuner,
the only snag is you'll need a COFDM modulator and upconvertor, which
in time will get cheaper.



You could use Wi-Fi for distribution around the house and UWB for close
range stuff.


--
Steve - www.digitalradiotech.co.uk - Digital Radio News & Info

Find the cheapest Freeview, DAB & MP3 Player Prices:
http://www.digitalradiotech.co.uk/fr..._receivers.htm
http://www.digitalradiotech.co.uk/da...tal_radios.htm
http://www.digitalradiotech.co.uk/mp...rs_1GB-5GB.htm
http://www.digitalradiotech.co.uk/mp...e_capacity.htm


  #10  
Old May 13th 05, 02:08 PM
Tim Mitchell
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Default

In article , Max Demian
writes
"Tim Mitchell" wrote in message
...

Presumably the UHF tuners on TV sets will gradually disappear also as they
won't be needed any more for receiving broadcasts, so linking devices by
UHF will become a thing of the past anyway.


What about 'analogue' teletext?

How am I going to read the subtitles on my opera laserdiscs if I need to buy
a new digital only TV?

Well you don't need a UHF tuner for analogue teletext... it will pass
down composite video/scart just fine. You probably don't mean that, you
mean that TV's will no longer include teletext decoders, which is
possibly true.
--
Tim Mitchell
 




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