[News Engineer]

Isn't UHD 8 times the amount of raw data as HD, not 4? It's 4 times the resolution, but also progressive rather than interlaced, which doubles it.

It is, I was thinking of it compared to 1080p:

720p / 1080i 1.5Gbps
1080p 3Gbps
2160p 12Gbps

3G is often used in broadcasting a shorthand for handling 1080p. So if you ever see a reference to it make it to air (BT Tower bars being a common example), that’s what it’s referring to, not the mobile standard.

There are some HD facilities that were built to allow for 3Gbps signals, so moving to that isn’t as difficult an upgrade. Although it’s quite common to find a mix of older kit and infrastructure that can and can’t.