A lot of the "sub-region" studios no longer exist (Nottingham for instance), so all sub-region programmes are made at the same centralised studios, one pre-recorded, usually by the same presenters, & then output at the same time as the live broadcast of the other sub-region.
This is where you get the HD issue, as only one HD circuit is available from each studio complex. Hence the pre-recorded programme can go out on the SD circuit to the intended sub-region & the live to the other, but the HD feed can only provide the live programme to both.
---------- Post added at 12:52 ---------- Previous post was at 12:46 ----------
Quote:
Originally Posted by spiderplant
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There are four to be precise.
Made in Liverpool (Winter Hill + Storeton Relay on the Wirral),
That's Manchester,
That's Lancashire,
plus the local Greater Manchester mini mux.
http://tx.mb21.co.uk/gallery/gallery...71&pageid=1867