[opendtv] Re: ATSC Test system - cheap

be warned:  while the 8-VSB modulator works well -- I've known people who
have used them extensively for testing and cable uses -- it is not stable
enough for broadcast use.  IIRC, that's because of 'edge' issues.

John Willkie
----- Original Message ----- 
From: "Ron Economos" <k6mpg@xxxxxxxxxxx>
To: <opendtv@xxxxxxxxxxxxx>
Sent: Friday, July 22, 2005 2:17 PM
Subject: [opendtv] Re: ATSC Test system - cheap


> http://www.computermodules.com/broadcast/rf-8VSB-modulator-QPSK-Quam.shtml
>
>
http://www.computermodules.com/broadcast-systems/professional-8VSB-modulator.shtml
>
> Ron
>
> Craig Birkmaier wrote:
>
> >I have received a message from a friend of a friend who needs help
> >generating ATSC test streams to test various ATSC "decoders"
> >(receivers). Here is the request:
> >
> >
> >
> >>    This is a bit of a reverse from the normal situation, but I
> >>hoped some folks here might have some ideas.
> >>
> >>    I'm looking for ways to easily test and compare ATSC decoders.
> >>I'm looking for a PCI card or something that can take a local
> >>ATSC-compatible .ts file, and mux it and sent it out over coax, to
> >>which I can attach a normal ATSC decoder, which would see it like it
> >>was an antenna. Just like how VCRs used to work - RF out over coax,
> >>pretending to be channel 3 or 4.
> >>
> >>    I've seen some very high end systems that do a huge amount of
> >>stuff I don't care about. I'm looking for something simple and
> >>inexpensive - hopefully cheap enough that the company would actually
> >>publish the price :).
> >>
> >>
> >
> >I remember a recent story about a PC card that may be able to do
> >this. Does anyone know the specifics, or any other way to do this?
> >
> >Regards
> >Craig
> >
> >
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