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found the following series of tutorials via the myth tv site. there a few years old, but still have valuable information.
MythTV DVB Setup Guide
DVB is Digital Video Broadcasting, a set of digital television standards with a large amount of industry support.
There are several advantages to digital TV. Programme guides and flexible digital services are much easier than with analogue. In several countries the intention is to phase out analogue TV over time and DVB is one of the leading systems that may replace it.
For various technical reasons DVB is able to make better use of bandwidth than analogue transmissions. This means that several digital channels can be transmitted in place of one analogue channel. This is done by multiplexing the signals and you will often see DVB-T referred to as a multiplex or mux.
Picture quality can also be better, though this is not always true. If too many channels are squeezed into the same multiplex then the quality can drop.
Digital signals are more resistent to some types of interference that plagues analogue TV, for example ghosting. However uers in weak signal areas may find that they are unable to get usable pictures whereas they can receive at least some analogue channels.
http://www.ethics-gradient.net/myth/mythdvb.html
Notes on Building a Linux Storage Server
Recently I’ve been setting up MythTV and this has made me re-evaluate how much storage is ‘enough’. I also realised that I have free space scattered across several machines and it’s often tricky to find enough space to do things even though there’s enough in total.
I decided to address this by putting in a machine primarily dedicated to hosting storage. I started by looking at what could be bought off the shelf. The solutions I saw had several drawbacks.
One was cost. It seems that most people think that if you’re buying storage you must be a business with buckets of money to spend. It seemed to me that I was unlikely to get a storage server with 750GB - 1TB of total space for under £2000.
There are lower cost solutions aimed at home use but they semed to be very limited, sometimes only having a single drive. I knew I could build something from scratch for less money that would be more flexible and that could also do other server tasks.
http://www.ethics-gradient.net/myth/storage.html
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