TV Tuner in reverse?

James Knott james.knott-bJEeYj9oJeDQT0dZR+AlfA at public.gmane.org
Thu Sep 2 16:39:47 UTC 2010


William Park wrote:
> Hi,
>
> TV tuner will decoded ATSC signal from RG-6 input and record it to local
> harddisk.
> Is there a way to do in reverse?  That is, send a recorded TV program into RG-6
> coax
> cable in its original format, so that on the remote side, it would be as though
> it's coming
> from antenna.
>
> I have lots of leftover RG-6 cable/connectors.  And, I would like to connect my
> TV to
> my computer using RG-6 cable, and install A-B switch ($10) at TV, so that I can
> pick
> which input to watch from.  As far as TV is concerned, it wouldn't know if the
> signal is
> coming from antenna or from my computer.
>    
What you're looking for is referred to as a "video modulator".  Many 
years ago, personal computers such as the Apple II, Commie 64 etc. used 
them to hook up to a TV.  There are also some that will convert VGA to 
NTSC video, but with those you're greatly limited in resolution to what 
NTSC supports.  You could get a good picture with something that can 
take HDMI or DVI from a computer and convert it to ATSC video on RF, but 
I haven't seen any and I expect they'd be fairly expensive.  Of course, 
many TVs these days have VGA input, as well as HDMI/DVI, which would 
give excellent picture quality.  My own computer uses DVI @ 1080P on a 
23" wide screen monitor.  I could, if I wish, connect it to a HDMI input 
on my TV.  Does your TV not have any HDMI or VGA inputs?

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