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Once the digital switchover is over, will britan have 80+ ch

annels? (June 2006)

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MA
Markymark
Spencer For Hire posted:
Markymark posted:
Nick Harvey posted:


The transmitters which only broadcast analogue today will change to transmitting only the free digital muxes, NOT the subscription ones, at the same power as they currently transmit analogue.




There will be six muxes. 3 PSB and 3 COM. These broadly relate to the present Muxes 1, 2 and A for PSB, and B, C, D for COM. (BBC 4 ,C5 , and in Wales S4C will most probably share PSB 3 after switch over)


Does that mean at the time of analogue shutdown there will have to be a mass re-scanning of DTT boxes?


Oh yes. There'll be two rescans. The first at [DSO minus 1 month] when overnight BBC 2 analogue, and Mux 1 will vanish, to be replaced by PSB 1.
Then again on DSO day, when BBC 1, ITV-1, C4 and (if applicable)C5 will vanish, along with Muxes 2,A,B,C,D; to be replaced by the remaining two PSB muxes, plus (if applicable) COM1,2,3.
SP
Spencer
Markymark posted:
Spencer For Hire posted:
Markymark posted:
Nick Harvey posted:


The transmitters which only broadcast analogue today will change to transmitting only the free digital muxes, NOT the subscription ones, at the same power as they currently transmit analogue.




There will be six muxes. 3 PSB and 3 COM. These broadly relate to the present Muxes 1, 2 and A for PSB, and B, C, D for COM. (BBC 4 ,C5 , and in Wales S4C will most probably share PSB 3 after switch over)


Does that mean at the time of analogue shutdown there will have to be a mass re-scanning of DTT boxes?


Oh yes. There'll be two rescans. The first at [DSO minus 1 month] when overnight BBC 2 analogue, and Mux 1 will vanish, to be replaced by PSB 1.
Then again on DSO day, when BBC 1, ITV-1, C4 and (if applicable)C5 will vanish, to be replaced by the remaining two or five muxes.


Blimey. That's going to cause problems in itself. Aside from the huge bother of getting people to switch to digital, I'm sure the vast majority who have DTT will assume that they're sorted and need not worry about anything.

I guess there'll have to be some kind of advertising campaign to let people know about this as well.
MA
Markymark
Spencer For Hire posted:

Blimey. That's going to cause problems in itself. Aside from the huge bother of getting people to switch to digital, I'm sure the vast majority who have DTT will assume that they're sorted and need not worry about anything.

I guess there'll have to be some kind of advertising campaign to let people know about this as well.


Indeed. The important thing here is that the present 'low power' muxes (1,2,A,B,C,D), will not be the final high power versions (PSB1/2/3,COM 1/2/3).
At most transmitters the PSB 1,2,3 muxes will occupy the same freqeuncy allocations as three out of the present four or five analogue channels. Also all six muxes will be at 64QAM, and not the mixture we have today.
NH
Nick Harvey Founding member
Markymark posted:
Almost correct.

Nick Harvey posted:
Before all the pedants attack me for that not being quite 1000% technically accurate, I'm aware of that, but it DOES give a damn close approximation for the average Mr Punter out there.

You just can't please some people, can you?
MA
Markymark
Nick Harvey posted:
Markymark posted:
Almost correct.

Nick Harvey posted:
Before all the pedants attack me for that not being quite 1000% technically accurate, I'm aware of that, but it DOES give a damn close approximation for the average Mr Punter out there.

You just can't please some people, can you?


Sorry 'bout that, I must have thought I was on Usenet Very Happy
NH
Nick Harvey Founding member
Markymark posted:
Sorry 'bout that

Okay, I'll let you off!

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