So, I'm curious what you do with your home network that you need ethernet to each room?
Use it with a bunch of stationary devices? Two-way broadcast communication should only be used for mobile devices.
Assuming you can't get the other broadcaster to cooperate, you can't broadcast with the same "quality" (as defined by resolution and frequency-of-scene-changes) as you could if you controlled the entire 6MHz channel.
There is only one broadcaster. There is only one MPEG2 transport stream, now containing both programs. They must cooperate, as they are sharing one piece of transmission gear. It's not like a cellular network where two different entities are sharing time slices of a common spectrum. Also, I'm not aware of any broadcaster that uses 1080p.
78s and 45s are still better than digital.
Old 78s and 45s were never better than digital, in any fashion. They added weight and ceremony to listening to music, because of the care needed in using them. They added distortions that people like to call "warmth". Both of these are form, and run in direct violation to their primary function as a storage medium.
I'm somewhat confused. Each ATSC channel is a fixed 6 MHz wide spectrum. They can either do one HD channel or four SD channels
There's no explicit maximum, or at least none that you could ever reasonably reach. It all comes down to how much you compress the data. You can run dozens of HD channels on a single multiplex if they look like shit, or are primarily static images.
At the end of the day, all I know is that stations which once were viewable (some even perfect) under analog are no longer viewable under digital.
That sounds like other changes were made at the same time, independent of the digital transition. Their new transmitters are cheap shit. They dropped to a lower transmit power. They moved to a different antenna or frequency that results in increased interference.
Are you sure about that? ZFS has a "copies" parameter as well. It just means it stores two copies of the block somewhere in the pool. If you give it multiple disks in a pool, it will try to place those copies on different disks, but it will not guarantee it. It's a measure to prevent data loss when you have a damaged sector, not a full disk failure.
If you have disks of different sizes with copies=2, will it refuse to write if you only have one disk with free space remaining?