[vdr] Re: automatic channel scan

[Steffen Koch <Steffen.Koch@sphinx-electronics.de>]

Christian Berger wrote:

> > > Ok, then you always use the NIT for every transponder you are turned in
> > > anyhow, just like the EPG. You should have at least one channel
> > > programmed for every transponder to let that work efficiently.
> > Is there an information on the satelite about transponder frequencies?
> > If so you only have to tune one "range" to find one such transponder and
> > then get a complete transponder list to synchronize tuning with...
> I personally don't think a transponder frequencies transmission is
> possible. There are many uplink stations, so each of those stations
> would have to have a complete, updated (think of those 72Mhz
> transponders) list of channels. This would even include little
> remote-truck uplink-stations which don't even have internet access.
why that?
every transponder has a fixed frequency and polarization.
every TV-station normally transmits its signal to one uplink station,
they multiplex the signal with TDM and send it to the satellite for
transmission.