Cirion - judging by dsk's message, (s)he is either US or Canada, I'm guessing, so DVB-T muxing won't help here, they use ATSC for terrestrial - looks like (s)he is looking for satelite FTA anyway.
BTW - the muxing that you have read about on DVB-T was about the UK. They use muxing extensively there and share the mux's among stations/networks. I believe that is fairly unusual - most countries don't share the mux's like that, and either transmit nothing on the other bandwidth for the mux, fill it with HD content, or retransmit the same or slightly different channels. The UK solution seems to be very complex and contrived in terms of broadcasting - BUT very nice side effects for totallymaxed's solution of recording many channels simultenously!!
I don't live in the UK but I use am still able to recieve multiple channels pr. card on both my digital cable (DVB-C) and my digital sattelite (DVB-S). Take a look here. http://www.dvbdream.org/
Looking at this ATSC box, it uses both VDR and ATSC. I can not say if it supports receiving multiple channels on a single tuner.
DVB-S (Digital Sattelite) is available all over the world... Just look here: http://www.lyngsat.com/
I use a Diseqc rotor on my Dish, which gives me access to 24 satellites from 43w 39e. No matter what channel I tune too, there is always other channels available.
Not sure, but I think the channels only need to be on the same transponder, to be viewed/recorded simultaneously on DVB-S.
Cirion - I think you missed my point, receiving multiple channels is one thing. Mux'ing is like receiving multiple TV stations on the same channel (frequency) - like tuning your analogue TV to a single frequency but still being able to get multiple TV stations from that channel. This is completely different from DVB-S or C, they use a completely different modulation system, so they can't be compared directly. I wasn't talking about those because they are really comparable. DVB-S is probably closest because you point it a a transponder and receive multiple channels, but because you can only point it at one transponder at a time, it isn't the same thing. DVB-C is not analagous at all.
My point was that with DVB-T, most of the time, different TV stations are carried on different frequencies and therefore different mux's - this is how it is different from either C or S. Different stations on the same frequency(mux) are usually variations or alternate offering from the same TV station. But in the UK, this is not the case, they share the mux's as a public spectrum resource, and then different companies transmit over the same mux. Which means they pack the content in much more efficiently, and therefore allow for LMCE to capture far more, with far less hardware. The point I was making was, don't translate this into a general arrangement globally, because from what I understand, this arrangement is fairly uncommon (more's the pity!)