(24-06-2022, 01:19 PM)Brekkie Wrote: Well it wouldn't be no TV, it would just be one mux down at a time - though in theory once you've done the first you can temporarily stock that full with SD channels on DVB-T2 whilst others are being done.
The simplest way probably is for the BBC to go first as their core four channels are in HD already, but they'd need to house BBC News and BBC Parliament temporarily, but they could probably be squeezed in on PSB3 in SD. Obviously BBC Scotland/Alba to factor in too.
However in reality I suspect any plan would keep the main BBC channels at least and ITV/C4/C5 in SD on DVB-T until the end of the switch over.
I don't quite follow your logic, you can easily upgrade a mux and all of its transmitters from T1 to T2 virtually instantaneously . Hardware upgrades and replacements at the broadcaster end can be done over a period of time, you do the standby kit first, then the main, run it all at T1 then when you're ready flip the whole lot over at once, overnight.
In fact exactly that was done with the 1000 or so small relays at DSO. The transposers were exchanged months and years in advance for dual standard analogue/DVB kit, and run in analogue mode until the relevant DSO in each region, then switched on DSO day. It was the only way to do it in fact !
The relay stations won't require any modification for T2 anyway, and the main transmitters require just a new modulator at the front end.
What is the challenge is all the millions of bits of receiving equipment.