[mythtv-users] Adding a second satellite/cable box

[David Boreham]

> Do you just have a single coax cable coming out of the
> wall?  If so, you can't run 2 tuners on the same cable
> because a satellite box controls the selection of the
> LNB polarization with a DC voltage.  You will need to
> have a second coax that runs from the 2nd tuner all
> the way to the multiswitch.  Just using a splitter
> won't work.

This would be true if he had a typical dish/decoder box setup.
But he doesn't: he has some kind of in-building CATV digital 
sat distribution system. Almost certainly this system uses one coax cable
and can support multiple decoder boxes per apartment.
But it probably uses special decoder boxen (possibly 
digital cable tv boxes??).