[SixClub] Re: ATV or Variations on 6M? [Was: 6 Meter FSK Receiver - Board $9.95]

[Gabriel Sierra]

Hi,

NTSC signal requires a bandwidth of 4.3 Mhz for B&W
and 6 MHz for color. No way around it, analogly
speaking. With MPEG 2, you could have 3 video channels
in that same bandwidth, in full color. This would turn
TV into a digital mode (so to speak). Then come the
hardware problem. Some years I was researching for
this and I found a company that manufactured MPEG2
encoding boards, to be used in camcorders and other
applications. But I had to buy at least 1000 for even
being considered. Reception of the signal is less a
problem now, because of the FTA receivers now
available. With a little effort, they could be used to
receive the MPEG2 signal. I will do a little search to
see if there are some encoding boards available and
let the group know ;-)

Gabriel Sierra, WP3BM



--- doc <kd4e at verizon.net> wrote:

> >> is ATV permitted on 6M?
> > 
> > Mike wrote
> > Being how ATV chews up 6 MHz worth of bandwidth
> I'll let you be the judge.
> 
> Does ATV in all of its forms require 6MHz or only
> the most broadband form?
> 
> Just as SSTV is slowly being replaced by DSSTV
> are there not newer and narrower versions of
> ATV that are also more narrowband.
> 
> That said, I gather that the answer based on
> old traditional definitions of ATV is no.  :-)
> 
> -- 
> Thanks! & 73, doc kd4e  http://bibleseven.com
> Ham Links: http://bibleseven.com/hl.html
>
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Gabriel Sierra
Moondancer Recording Studios
moonrec at prtc.net
http://www.moondancer.freeservers.com