From Newsgroup: uk.tech.broadcast

On Tue, 24 Jun 2025 16:07:08 -0000 (UTC), Tweed <usenet.tweed@gmail.com> wrote:

Yes my Sony/Ford radio does that. The switch over is practically
impeccable. I wonder how it knows the relative time delay between the same station on DAB and FM? This can???t be a fixed constant.

Luck I expect.

If you listen to GHR on the motorway (on DAB), the delay is different between the various different transmitter regions.
This is sometimes by quite a lot, and sometimes not so much. I wonder how
they manage it, along with the level change and sometimes a quality change.
How do they do their local news inserts?
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From Newsgroup: uk.tech.broadcast

On Sun, 27 Jul 2025 12:37:43 GMT, Paul Ratcliffe <abuse@orac12.clara34.co56.uk78> wrote:

On Tue, 24 Jun 2025 16:07:08 -0000 (UTC), Tweed <usenet.tweed@gmail.com> wrote:

Yes my Sony/Ford radio does that. The switch over is practically
impeccable. I wonder how it knows the relative time delay between the same >> station on DAB and FM? This can???t be a fixed constant.

Luck I expect.

If you listen to GHR on the motorway (on DAB), the delay is different between >the various different transmitter regions.
This is sometimes by quite a lot, and sometimes not so much. I wonder how >they manage it, along with the level change and sometimes a quality change. >How do they do their local news inserts?

I assume that because GHR is in essence an amalgam of former ILR
stations, each one will be on a different local multiplex and the
bitrate could be different. I noticed for example that the bitrate for
Capital Radio in Scotland is lower than it is in London. To their
credit, Global Radio has increased the bitrate for Gold Radio from 32
kbps to 40 kbps (DAB+). I wonder if this is the only example (Classic
FM may have improved also).
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