AVS Forum Special Member
Join Date: Jan 2000
Location: Salt Lake City, UT, USA
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That's the same thing I was talking about....
We take a bouquet of channels (basically, a "group" of channels in a single, wide digital group), and use the trans-modulator to "compact" the very-wide QPSK signal in to a 6 MHz (in the USA) QAM signal. It only moves the entire RF channel in to a new mode (QAM), where standard Cable QAM TV sets can use it.
The individual channels have to be MPEG-2 SDTV or HDTV (for most currently available sets) and non-encrypted (or, the sets would need their own, individual descramblers).
You might look at something like that, if you wanted to produce and encode everything at one location, and then transmit it via satellite (or, whatever) to many locations around the region or country. You'd need modulators for each channel, but you could trans-modulate the l-band from a dish, and distribute it via a typical RF MATV or cable system.
Ken English, Sr. Engineer, KSL-TV.
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