Italian manufacturer Promax recently released the DT 504 quadruple input DVB-T modulator.
This unit allows 4 individual AV sources to be combined into one DVB-T channel (4 virtual channels).
The four onboard MPEG2 encoders mean that multiple satellite TV programs could be combined with digital terrestrial channels, allocated their own UHF channel, and displayed on a DVB-T receiver.
As many hotels are now replacing their standard analogue TV sets with plasma or LCD displays having an integral DVB-T tuner, this allows  other services such as satellite or movie channels to be integrated into …