I have some cabling challenges to overcome to achieve this, in that there is only 1 x RG7 coax feed carrying RF from a 6-way splitter co-located with my satellite receiver (a Sky decoder permanently tuned to Prime, as our house is one of those not able to 'see' the local TVNZ transmitter site (Te Aroha)). On the feeder side of the splitter, the terrestrial and satellite signals are combined on the same coax in the ceiling space, and then split out at the satellite decoder in the cupboard where the 6 way splitter is. The decoded prime signal is then re-combined onto the splitter on a different UHF channel (38) to feed all the TV outlets in the house. So, in short, I do have TV1,TV2, TV3, C4 and Prime at all TV outlets. (Incidentally, the Prime service for those who can't get it terrestrially is free off Sky after you have had the dish/decoder installed.)
The other problem I have is that the location of my wireless ADSL router is not located near the splitter. The house is not cabled for ethernet either, which would be too difficult to install to the lounge where the HDMI telly is (Pana 700 series 42" plasma), unfortunately. A wireless option is possible between the ADSL router location and the TV splitter cupboard, and to other locations in the house, but see my later comment about quality of that option..
So what am I trying to achieve? I want to be able to deliver Freeview (off sateliite, coz I can't get a terrestrial signal of Te Aroha), and streaming internet content to the 42" plasma in the lounge, (preferably at HDef when available). I had planned to build a MythTV backend co-located with the satellite receiver (so I can chain the satellite signal through a DVB-S card in the Myth TV box), pump internet content into the same box using 802.11g wireless connection from my ADSL router, and then deliver the MythTV-managed content over wireless 802.11g to a frontend PC connected by HDMI to the plasma in the lounge.
But based on testing I've done so far, I'm concerned I won't be able to always maintain a good enough link to deliver an uninterrupted video stream between the backend and the frontend in the lounge. Although there is a possibility that the 'blocky' transmission I've seen (i.e a burst of video, then a pause, then another burst etc) is more to do with bottlenecks in my test server (1.2GHz processor with 768MB RAM) than the wireless link (802.11g @ ~20MBps)? Is it reasonable to assume I should be able to maintain a good enough link over 11g? Even when I probably still have to halve my available wireless throughput as my test setup is streaming directly from a backend at the router location?
The only other option I can think of is to re-modulate the MythTV video output back onto the RF coax, rather than transport it over IP, but this seems a bit of a backward step. Anyone know whether MythTV can be configured to do that (i.e all content (not just decoded TV) out on a TV-out output? Maybe needs a separate video card?).
Or do I just have to forget about streaming internet, buy a standard freeview decoder, co-locate it with the Sky decoder, and sort out a remote control extender to change the channels from the lounge without having to go to the cupboard all the time?
Anyone else had to resort to these extremes? (Next time, I better buy a house that I can cable more easily!)