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-   -   QAM (http://www.homecinemabanter.com/showthread.php?t=60673)

JOHN PORCELLA October 24th 08 02:49 PM

QAM
 
If I recall correctly, when OnDigital was broadcasting they used QAM
64 which meant that they could fit it plenty of channels.

This was later switched to QAM 16 which was more stable.

Would it make sense to return to QAM 64 after analogue switch-off? I
wonder, since it would be good to have more choice available through
more channels, and if the system was previously flaky, then it need
not be if power levels are raised in future once analogue is not
around anymore.

John

Malcolm H October 24th 08 03:03 PM

QAM
 

"JOHN PORCELLA" wrote in message
...
If I recall correctly, when OnDigital was broadcasting they used QAM
64 which meant that they could fit it plenty of channels.

This was later switched to QAM 16 which was more stable.

Would it make sense to return to QAM 64 after analogue switch-off? I
wonder, since it would be good to have more choice available through
more channels, and if the system was previously flaky, then it need
not be if power levels are raised in future once analogue is not
around anymore.

John


AIUI all channels will be QAM 64 after ASO.


JOHN PORCELLA October 24th 08 03:10 PM

QAM
 
On 24 Oct, 14:03, "Malcolm H" wrote:
"JOHN PORCELLA" wrote in message

...

If I recall correctly, when OnDigital was broadcasting they used QAM
64 which meant that they could fit it plenty of channels.


This was later switched to QAM 16 which was more stable.


Would it make sense to return to QAM 64 after analogue switch-off? *I
wonder, since it would be good to have more choice available through
more channels, and if the system was previously flaky, then it need
not be if power levels are raised in future once analogue is not
around anymore.


John


AIUI all channels will be QAM 64 after ASO.


Ah! This would make sense if power levels could be raised and there
was demand for more channel space.

John

Dave Farrance October 24th 08 04:32 PM

QAM
 
JOHN PORCELLA wrote:

On 24 Oct, 14:03, "Malcolm H" wrote:
"JOHN PORCELLA" wrote in message

...

If I recall correctly, when OnDigital was broadcasting they used QAM
64 which meant that they could fit it plenty of channels.


This was later switched to QAM 16 which was more stable.


Would it make sense to return to QAM 64 after analogue switch-off? *I
wonder, since it would be good to have more choice available through
more channels, and if the system was previously flaky, then it need
not be if power levels are raised in future once analogue is not
around anymore.


John


AIUI all channels will be QAM 64 after ASO.


Ah! This would make sense if power levels could be raised and there
was demand for more channel space.


They will be and there will be.

--
Dave Farrance

Malcolm H October 24th 08 05:25 PM

QAM
 

"Dave Farrance" wrote in message
...
JOHN PORCELLA wrote:

On 24 Oct, 14:03, "Malcolm H" wrote:
"JOHN PORCELLA" wrote in message

...

If I recall correctly, when OnDigital was broadcasting they used QAM
64 which meant that they could fit it plenty of channels.

This was later switched to QAM 16 which was more stable.

Would it make sense to return to QAM 64 after analogue switch-off? I
wonder, since it would be good to have more choice available through
more channels, and if the system was previously flaky, then it need
not be if power levels are raised in future once analogue is not
around anymore.

John

AIUI all channels will be QAM 64 after ASO.


Ah! This would make sense if power levels could be raised and there
was demand for more channel space.


They will be and there will be.

--
Dave Farrance


Altough I would much prefer to see more emphasis on quality and less on
quantity.


JOHN PORCELLA October 25th 08 05:24 PM

QAM
 
On 24 Oct, 15:32, Dave Farrance
wrote:
JOHN PORCELLA wrote:
On 24 Oct, 14:03, "Malcolm H" wrote:
"JOHN PORCELLA" wrote in message


....


If I recall correctly, when OnDigital was broadcasting they used QAM
64 which meant that they could fit it plenty of channels.


This was later switched to QAM 16 which was more stable.


Would it make sense to return to QAM 64 after analogue switch-off? *I
wonder, since it would be good to have more choice available through
more channels, and if the system was previously flaky, then it need
not be if power levels are raised in future once analogue is not
around anymore.


John


AIUI all channels will be QAM 64 after ASO.


Ah! *This would make sense if power levels could be raised and there
was demand for more channel space.


They will be


....more signal power...makes sense!


and there will be.


....more demand...more room would be needed for HD and I can see the
return of Sky Sports/Movies to DTT.


John

--
Dave Farrance- Hide quoted text -

- Show quoted text -



JOHN PORCELLA October 25th 08 05:25 PM

QAM
 
On 24 Oct, 16:25, "Malcolm H" wrote:
"Dave Farrance" wrote in message

...





JOHN PORCELLA wrote:


On 24 Oct, 14:03, "Malcolm H" wrote:
"JOHN PORCELLA" wrote in message


....


If I recall correctly, when OnDigital was broadcasting they used QAM
64 which meant that they could fit it plenty of channels.


This was later switched to QAM 16 which was more stable.


Would it make sense to return to QAM 64 after analogue switch-off? I
wonder, since it would be good to have more choice available through
more channels, and if the system was previously flaky, then it need
not be if power levels are raised in future once analogue is not
around anymore.


John


AIUI all channels will be QAM 64 after ASO.


Ah! *This would make sense if power levels could be raised and there
was demand for more channel space.


They will be and there will be.


--
Dave Farrance


Altough I would much prefer to see more emphasis on quality and less on
quantity.-


Technical qualifty could be improved with HD and higher power levels
for the rest.

Content quality...difficult...it is very subjective, but if there is
more choice (quantity) available, then there is a better chance,
perhaps, of having something for everybody.

John

Scott October 25th 08 10:07 PM

QAM
 
On Fri, 24 Oct 2008 14:03:37 +0100, "Malcolm H"
wrote:


"JOHN PORCELLA" wrote in message
...
If I recall correctly, when OnDigital was broadcasting they used QAM
64 which meant that they could fit it plenty of channels.

This was later switched to QAM 16 which was more stable.

Would it make sense to return to QAM 64 after analogue switch-off? I
wonder, since it would be good to have more choice available through
more channels, and if the system was previously flaky, then it need
not be if power levels are raised in future once analogue is not
around anymore.

John


AIUI all channels will be QAM 64 after ASO.


I thought the multiplex containing ITV was already.

Bill Wright October 26th 08 01:28 AM

QAM
 

"Scott" wrote in message
...
AIUI all channels will be QAM 64 after ASO.


I thought the multiplex containing ITV was already.


Yes well?

Bill



PeeGee October 26th 08 10:25 AM

QAM
 
Bill Wright wrote:
"Scott" wrote in message
...
AIUI all channels will be QAM 64 after ASO.

I thought the multiplex containing ITV was already.


Yes well?

Bill



No, unwell :-) it doesn't have the energy to go more than a few yards
without falling over.

--
PeeGee

"Nothing should be able to load itself onto a computer without the
knowledge or consent of the computer user. Software should also be able
to be removed from a computer easily."
Peter Cullen, Microsoft Chief Privacy Strategist (Computing 18 Aug 05)


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