[opendtv] Re: FCC Opens TV Spectrum for Broadband Use
- From: "John Shutt" <shuttj@xxxxxxxxx>
- To: "OpenDTV" <opendtv@xxxxxxxxxxxxx>
- Date: Mon, 6 Dec 2010 19:16:55 -0500
Hardly the case today, Cliff. QAM modulators are very inexpensive for head
ends, and a dedicated one on a chip working on a fixed RF channel should be
cheaper than an ATSC
equalizing demod chip.
Do you think that a cable plant cost $50,000 per digital channel just for
modulators? Yikes!
Here's a QAM modulator on a PCI card:
http://www.advanceddigital.ca/products/dvb/tvb590.php
John
----- Original Message -----
From: "Cliff Benham" <flyback1@xxxxxxxxxxx>
Unless things have radically changed in the 4 years since the TV lab I
worked in required $50 Grand worth of rackmount equipment to make an
unencrypted QAM stream, I don't see how it is either financially or
physically possible to put QAM 'modulaters' in millions of set top boxes
and lease or sell them at a competitive price to consumers.
I would be very interested in knowing if this has in fact happened.
Cliff
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